t3lib/class.t3lib_div.php

   1 <?php
   2 /***************************************************************
   3 *  Copyright notice
   4 *
   5 *  (c) 1999-2006 Kasper Skaarhoj (kasperYYYY@typo3.com)
   6 *  All rights reserved
   7 *
   8 *  This script is part of the TYPO3 project. The TYPO3 project is
   9 *  free software; you can redistribute it and/or modify
  10 *  it under the terms of the GNU General Public License as published by
  11 *  the Free Software Foundation; either version 2 of the License, or
  12 *  (at your option) any later version.
  13 *
  14 *  The GNU General Public License can be found at
  15 *  http://www.gnu.org/copyleft/gpl.html.
  16 *  A copy is found in the textfile GPL.txt and important notices to the license
  17 *  from the author is found in LICENSE.txt distributed with these scripts.
  18 *
  19 *
  20 *  This script is distributed in the hope that it will be useful,
  21 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 *  GNU General Public License for more details.
  24 *
  25 *  This copyright notice MUST APPEAR in all copies of the script!
  26 ***************************************************************/
  27 /**
  28  * Contains the reknown class "t3lib_div" with general purpose functions
  29  *
  30  * $Id$
  31  * Revised for TYPO3 3.6 July/2003 by Kasper Skaarhoj
  32  * XHTML compliant
  33  * Usage counts are based on search 22/2 2003 through whole source including tslib/
  34  *
  35  * @author      Kasper Skaarhoj <kasperYYYY@typo3.com>
  36  */
  37 /**
  38  * [CLASS/FUNCTION INDEX of SCRIPT]
  39  *
  40  *
  41  *
  42  *  232: class t3lib_div
  43  *
  44  *              SECTION: GET/POST Variables
  45  *  262:     function _GP($var)
  46  *  280:     function _GET($var=NULL)
  47  *  297:     function _POST($var=NULL)
  48  *  313:     function _GETset($inputGet,$key='')
  49  *  336:     function GPvar($var,$strip=0)
  50  *  353:     function GParrayMerged($var)
  51  *
  52  *              SECTION: IMAGE FUNCTIONS
  53  *  397:     function gif_compress($theFile, $type)
  54  *  425:     function png_to_gif_by_imagemagick($theFile)
  55  *  450:     function read_png_gif($theFile,$output_png=0)
  56  *
  57  *              SECTION: STRING FUNCTIONS
  58  *  499:     function fixed_lgd($string,$origChars,$preStr='...')
  59  *  524:     function fixed_lgd_pre($string,$chars)
  60  *  538:     function fixed_lgd_cs($string,$chars)
  61  *  555:     function breakTextForEmail($str,$implChar="\n",$charWidth=76)
  62  *  574:     function breakLinesForEmail($str,$implChar="\n",$charWidth=76)
  63  *  610:     function cmpIP($baseIP, $list)
  64  *  626:     function cmpIPv4($baseIP, $list)
  65  *  668:     function cmpIPv6($baseIP, $list)
  66  *  711:     function IPv6Hex2Bin ($hex)
  67  *  726:     function normalizeIPv6($address)
  68  *  782:     function validIPv6($ip)
  69  *  805:     function cmpFQDN($baseIP, $list)
  70  *  835:     function inList($list,$item)
  71  *  847:     function rmFromList($element,$list)
  72  *  863:     function expandList($list)
  73  *  894:     function intInRange($theInt,$min,$max=2000000000,$zeroValue=0)
  74  *  910:     function intval_positive($theInt)
  75  *  923:     function int_from_ver($verNumberStr)
  76  *  934:     function compat_version($verNumberStr)
  77  *  952:     function md5int($str)
  78  *  965:     function shortMD5($input, $len=10)
  79  *  978:     function uniqueList($in_list, $secondParameter=NULL)
  80  *  992:     function split_fileref($fileref)
  81  * 1030:     function dirname($path)
  82  * 1046:     function modifyHTMLColor($color,$R,$G,$B)
  83  * 1066:     function modifyHTMLColorAll($color,$all)
  84  * 1077:     function rm_endcomma($string)
  85  * 1090:     function danish_strtoupper($string)
  86  * 1105:     function convUmlauts($str)
  87  * 1118:     function testInt($var)
  88  * 1130:     function isFirstPartOfStr($str,$partStr)
  89  * 1146:     function formatSize($sizeInBytes,$labels='')
  90  * 1181:     function convertMicrotime($microtime)
  91  * 1195:     function splitCalc($string,$operators)
  92  * 1217:     function calcPriority($string)
  93  * 1258:     function calcParenthesis($string)
  94  * 1284:     function htmlspecialchars_decode($value)
  95  * 1299:     function deHSCentities($str)
  96  * 1312:     function slashJS($string,$extended=0,$char="'")
  97  * 1325:     function rawUrlEncodeJS($str)
  98  * 1337:     function rawUrlEncodeFP($str)
  99  * 1348:     function validEmail($email)
 100  * 1363:     function formatForTextarea($content)
 101  *
 102  *              SECTION: ARRAY FUNCTIONS
 103  * 1394:     function inArray($in_array,$item)
 104  * 1411:     function intExplode($delim, $string)
 105  * 1430:     function revExplode($delim, $string, $count=0)
 106  * 1450:     function trimExplode($delim, $string, $onlyNonEmptyValues=0)
 107  * 1472:     function uniqueArray($valueArray)
 108  * 1484:     function removeArrayEntryByValue($array,$cmpValue)
 109  * 1513:     function implodeArrayForUrl($name,$theArray,$str='',$skipBlank=0,$rawurlencodeParamName=0)
 110  * 1538:     function explodeUrl2Array($string,$multidim=FALSE)
 111  * 1564:     function compileSelectedGetVarsFromArray($varList,$getArray,$GPvarAlt=1)
 112  * 1587:     function addSlashesOnArray(&$theArray)
 113  * 1611:     function stripSlashesOnArray(&$theArray)
 114  * 1633:     function slashArray($arr,$cmd)
 115  * 1650:     function array_merge_recursive_overrule($arr0,$arr1,$notAddKeys=0,$includeEmtpyValues=true)
 116  * 1683:     function array_merge($arr1,$arr2)
 117  * 1696:     function csvValues($row,$delim=',',$quote='"')
 118  *
 119  *              SECTION: HTML/XML PROCESSING
 120  * 1738:     function get_tag_attributes($tag)
 121  * 1775:     function split_tag_attributes($tag)
 122  * 1809:     function implodeAttributes($arr,$xhtmlSafe=FALSE,$dontOmitBlankAttribs=FALSE)
 123  * 1836:     function implodeParams($arr,$xhtmlSafe=FALSE,$dontOmitBlankAttribs=FALSE)
 124  * 1851:     function wrapJS($string, $linebreak=TRUE)
 125  * 1882:     function xml2tree($string,$depth=999)
 126  * 1969:     function array2xml($array,$NSprefix='',$level=0,$docTag='phparray',$spaceInd=0, $options=array(),$stackData=array())
 127  * 2088:     function xml2array($string,$NSprefix='',$reportDocTag=FALSE)
 128  * 2198:     function xmlRecompileFromStructValArray($vals)
 129  * 2242:     function xmlGetHeaderAttribs($xmlData)
 130  *
 131  *              SECTION: FILES FUNCTIONS
 132  * 2275:     function getURL($url, $includeHeader=0)
 133  * 2342:     function writeFile($file,$content)
 134  * 2367:     function fixPermissions($file)
 135  * 2384:     function writeFileToTypo3tempDir($filepath,$content)
 136  * 2427:     function mkdir($theNewFolder)
 137  * 2446:     function mkdir_deep($destination,$deepDir)
 138  * 2468:     function get_dirs($path)
 139  * 2493:     function getFilesInDir($path,$extensionList='',$prependPath=0,$order='')
 140  * 2547:     function getAllFilesAndFoldersInPath($fileArr,$path,$extList='',$regDirs=0,$recursivityLevels=99)
 141  * 2570:     function removePrefixPathFromList($fileArr,$prefixToRemove)
 142  * 2586:     function fixWindowsFilePath($theFile)
 143  * 2598:     function resolveBackPath($pathStr)
 144  * 2626:     function locationHeaderUrl($path)
 145  *
 146  *              SECTION: DEBUG helper FUNCTIONS
 147  * 2666:     function debug_ordvalue($string,$characters=100)
 148  * 2683:     function view_array($array_in)
 149  * 2711:     function print_array($array_in)
 150  * 2726:     function debug($var="",$brOrHeader=0)
 151  * 2757:     function debug_trail()
 152  * 2779:     function debugRows($rows,$header='')
 153  *
 154  *              SECTION: SYSTEM INFORMATION
 155  * 2857:     function getThisUrl()
 156  * 2873:     function linkThisScript($getParams=array())
 157  * 2897:     function linkThisUrl($url,$getParams=array())
 158  * 2920:     function getIndpEnv($getEnvName)
 159  * 3113:     function milliseconds()
 160  * 3125:     function clientInfo($useragent='')
 161  *
 162  *              SECTION: TYPO3 SPECIFIC FUNCTIONS
 163  * 3212:     function getFileAbsFileName($filename,$onlyRelative=1,$relToTYPO3_mainDir=0)
 164  * 3248:     function validPathStr($theFile)
 165  * 3259:     function isAbsPath($path)
 166  * 3270:     function isAllowedAbsPath($path)
 167  * 3287:     function verifyFilenameAgainstDenyPattern($filename)
 168  * 3305:     function upload_copy_move($source,$destination)
 169  * 3331:     function upload_to_tempfile($uploadedFileName)
 170  * 3349:     function unlink_tempfile($uploadedTempFileName)
 171  * 3365:     function tempnam($filePrefix)
 172  * 3379:     function stdAuthCode($uid_or_record,$fields='',$codeLength=8)
 173  * 3410:     function cHashParams($addQueryParams)
 174  * 3433:     function hideIfNotTranslated($l18n_cfg_fieldValue)
 175  * 3448:     function readLLfile($fileRef,$langKey)
 176  * 3472:     function readLLXMLfile($fileRef,$langKey)
 177  * 3589:     function llXmlAutoFileName($fileRef,$language)
 178  * 3633:     function loadTCA($table)
 179  * 3653:     function resolveSheetDefInDS($dataStructArray,$sheet='sDEF')
 180  * 3686:     function resolveAllSheetsInDS($dataStructArray)
 181  * 3715:     function callUserFunction($funcName,&$params,&$ref,$checkPrefix='user_',$silent=0)
 182  * 3813:     function &getUserObj($classRef,$checkPrefix='user_',$silent=0)
 183  * 3871:     function &makeInstance($className)
 184  * 3883:     function makeInstanceClassName($className)
 185  * 3897:     function &makeInstanceService($serviceType, $serviceSubType='', $excludeServiceKeys=array())
 186  * 3961:     function plainMailEncoded($email,$subject,$message,$headers='',$enc='',$charset='',$dontEncodeHeader=false)
 187  * 4031:     function quoted_printable($string,$maxlen=76)
 188  * 4078:     function encodeHeader($line,$enc='',$charset='ISO-8859-1')
 189  * 4121:     function substUrlsInPlainText($message,$urlmode='76',$index_script_url='')
 190  * 4155:     function makeRedirectUrl($inUrl,$l=0,$index_script_url='')
 191  * 4182:     function freetypeDpiComp($font_size)
 192  * 4194:     function initSysLog()
 193  * 4251:     function sysLog($msg, $extKey, $severity=0)
 194  * 4334:     function devLog($msg, $extKey, $severity=0, $dataVar=FALSE)
 195  * 4355:     function arrayToLogString($arr, $valueList=array(), $valueLength=20)
 196  * 4378:     function imageMagickCommand($command, $parameters, $path='')
 197  * 4425:     function unQuoteFilenames($parameters,$unQuote=FALSE)
 198  * 4459:     function quoteJSvalue($value, $inScriptTags = false)
 199  *
 200  * TOTAL FUNCTIONS: 138
 201  * (This index is automatically created/updated by the extension "extdeveval")
 202  *
 203  */
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216 /**
 217  * The legendary "t3lib_div" class - Miscellaneous functions for general purpose.
 218  * Most of the functions does not relate specifically to TYPO3
 219  * However a section of functions requires certain TYPO3 features available
 220  * See comments in the source.
 221  * You are encouraged to use this library in your own scripts!
 222  *
 223  * USE:
 224  * The class is intended to be used without creating an instance of it.
 225  * So: Don't instantiate - call functions with "t3lib_div::" prefixed the function name.
 226  * So use t3lib_div::[method-name] to refer to the functions, eg. 't3lib_div::milliseconds()'
 227  *
 228  * @author      Kasper Skaarhoj <kasperYYYY@typo3.com>
 229  * @package TYPO3
 230  * @subpackage t3lib
 231  */
 232 class t3lib_div {
 233
 234
 235
 236
 237
 238         /*************************
 239          *
 240          * GET/POST Variables
 241          *
 242          * Background:
 243          * Input GET/POST variables in PHP may have their quotes escaped with "\" or not depending on configuration.
 244          * TYPO3 has always converted quotes to BE escaped if the configuration told that they would not be so.
 245          * But the clean solution is that quotes are never escaped and that is what the functions below offers.
 246          * Eventually TYPO3 should provide this in the global space as well.
 247          * In the transitional phase (or forever..?) we need to encourage EVERY to read and write GET/POST vars through the API functions below.
 248          *
 249          *************************/
 250
 251         /**
 252          * Returns the 'GLOBAL' value of incoming data from POST or GET, with priority to POST (that is equalent to 'GP' order)
 253          * Strips slashes from all output, both strings and arrays.
 254          * This function substitutes t3lib_div::GPvar()
 255          * To enhancement security in your scripts, please consider using t3lib_div::_GET or t3lib_div::_POST if you already know by which method your data is arriving to the scripts!
 256          * Usage: 537
 257          *
 258          * @param       string          GET/POST var to return
 259          * @return      mixed           POST var named $var and if not set, the GET var of the same name.
 260          * @see GPvar()
 261          */
 262         function _GP($var)      {
 263                 if(empty($var)) return;
 264                 $value = isset($_POST[$var]) ? $_POST[$var] : $_GET[$var];
 265                 if (isset($value))      {
 266                         if (is_array($value))   { t3lib_div::stripSlashesOnArray($value); } else { $value = stripslashes($value); }
 267                 }
 268                 return $value;
 269         }
 270
 271         /**
 272          * Returns the global GET array (or value from) normalized to contain un-escaped values.
 273          * ALWAYS use this API function to acquire the GET variables!
 274          * Usage: 27
 275          *
 276          * @param       string          Optional pointer to value in GET array (basically name of GET var)
 277          * @return      mixed           If $var is set it returns the value of $_GET[$var]. If $var is NULL (default), returns $_GET itself. In any case *slashes are stipped from the output!*
 278          * @see _POST(), _GP(), _GETset()
 279          */
 280         function _GET($var=NULL)        {
 281                 $value = ($var === NULL) ? $_GET : (empty($var) ? NULL : $_GET[$var]);
 282                 if (isset($value))      {       // Removes slashes since TYPO3 has added them regardless of magic_quotes setting.
 283                         if (is_array($value))   { t3lib_div::stripSlashesOnArray($value); } else { $value = stripslashes($value); }
 284                 }
 285                 return $value;
 286         }
 287
 288         /**
 289          * Returns the global POST array (or value from) normalized to contain un-escaped values.
 290          * ALWAYS use this API function to acquire the POST variables!
 291          * Usage: 41
 292          *
 293          * @param       string          Optional pointer to value in POST array (basically name of POST var)
 294          * @return      mixed           If $var is set it returns the value of $_POST[$var]. If $var is NULL (default), returns $_POST itself. In any case *slashes are stipped from the output!*
 295          * @see _GET(), _GP()
 296          */
 297         function _POST($var=NULL)       {
 298                 $value = ($var === NULL) ? $_POST : (empty($var) ? NULL : $_POST[$var]);
 299                 if (isset($value))      {       // Removes slashes since TYPO3 has added them regardless of magic_quotes setting.
 300                         if (is_array($value))   { t3lib_div::stripSlashesOnArray($value); } else { $value = stripslashes($value); }
 301                 }
 302                 return $value;
 303         }
 304
 305         /**
 306          * Writes input value to $_GET
 307          * Usage: 2
 308          *
 309          * @param       array           Array to write to $_GET. Values should NOT be escaped at input time (but will be escaped before writing according to TYPO3 standards).
 310          * @param       string          Alternative key; If set, this will not set the WHOLE GET array, but only the key in it specified by this value!
 311          * @return      void
 312          */
 313         function _GETset($inputGet,$key='')     {
 314                         // ADDS slashes since TYPO3 standard currently is that slashes MUST be applied (regardless of magic_quotes setting).
 315                 if (strcmp($key,''))    {
 316                         if (is_array($inputGet))        { t3lib_div::addSlashesOnArray($inputGet); } else { $inputGet = addslashes($inputGet); }
 317                         $GLOBALS['HTTP_GET_VARS'][$key] = $_GET[$key] = $inputGet;
 318                 } elseif (is_array($inputGet)){
 319                         t3lib_div::addSlashesOnArray($inputGet);
 320                         $GLOBALS['HTTP_GET_VARS'] = $_GET = $inputGet;
 321                 }
 322         }
 323
 324         /**
 325          * GET/POST variable
 326          * Returns the 'GLOBAL' value of incoming data from POST or GET, with priority to POST (that is equalent to 'GP' order)
 327          * Strips slashes of string-outputs, but not arrays UNLESS $strip is set. If $strip is set all output will have escaped characters unescaped.
 328          * Usage: 2
 329          *
 330          * @param       string          GET/POST var to return
 331          * @param       boolean         If set, values are stripped of return values that are *arrays!* - string/integer values returned are always strip-slashed()
 332          * @return      mixed           POST var named $var and if not set, the GET var of the same name.
 333          * @deprecated          Use t3lib_div::_GP instead (ALWAYS delivers a value with un-escaped values!)
 334          * @see _GP()
 335          */
 336         function GPvar($var,$strip=0)   {
 337                 if(empty($var)) return;
 338                 $value = isset($_POST[$var]) ? $_POST[$var] : $_GET[$var];
 339                 if (isset($value) && is_string($value)) { $value = stripslashes($value); }      // Originally check '&& get_magic_quotes_gpc() ' but the values of $_GET are always slashed regardless of get_magic_quotes_gpc() because HTTP_POST/GET_VARS are run through addSlashesOnArray in the very beginning of index_ts.php eg.
 340                 if ($strip && isset($value) && is_array($value)) { t3lib_div::stripSlashesOnArray($value); }
 341                 return $value;
 342         }
 343
 344         /**
 345          * Returns the GET/POST global arrays merged with POST taking precedence.
 346          * Usage: 1
 347          *
 348          * @param       string          Key (variable name) from GET or POST vars
 349          * @return      array           Returns the GET vars merged recursively onto the POST vars.
 350          * @ignore
 351          * @deprecated
 352          */
 353         function GParrayMerged($var)    {
 354                 $postA = is_array($_POST[$var]) ? $_POST[$var] : array();
 355                 $getA = is_array($_GET[$var]) ? $_GET[$var] : array();
 356                 $mergedA = t3lib_div::array_merge_recursive_overrule($getA,$postA);
 357                 t3lib_div::stripSlashesOnArray($mergedA);
 358                 return $mergedA;
 359         }
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370         /*************************
 371          *
 372          * IMAGE FUNCTIONS
 373          *
 374          *************************/
 375
 376
 377         /**
 378          * Compressing a GIF file if not already LZW compressed
 379          * This function is a workaround for the fact that ImageMagick and/or GD does not compress GIF-files to their minimun size (that is RLE or no compression used)
 380          *
 381          *              The function takes a file-reference, $theFile, and saves it again through GD or ImageMagick in order to compress the file
 382          *              GIF:
 383          *              If $type is not set, the compression is done with ImageMagick (provided that $GLOBALS['TYPO3_CONF_VARS']['GFX']['im_path_lzw'] is pointing to the path of a lzw-enabled version of 'convert') else with GD (should be RLE-enabled!)
 384          *              If $type is set to either 'IM' or 'GD' the compression is done with ImageMagick and GD respectively
 385          *              PNG:
 386          *              No changes.
 387          *
 388          *              $theFile is expected to be a valid GIF-file!
 389          *              The function returns a code for the operation.
 390          * Usage: 9
 391          *
 392          * @param       string          Filepath
 393          * @param       string          See description of function
 394          * @return      string          Returns "GD" if GD was used, otherwise "IM" if ImageMagick was used. If nothing done at all, it returns empty string.
 395          * @internal
 396          */
 397         function gif_compress($theFile, $type)  {
 398                 $gfxConf = $GLOBALS['TYPO3_CONF_VARS']['GFX'];
 399                 $returnCode='';
 400                 if ($gfxConf['gif_compress'] && strtolower(substr($theFile,-4,4))=='.gif')      {       // GIF...
 401                         if (($type=='IM' || !$type) && $gfxConf['im'] && $gfxConf['im_path_lzw'])       {       // IM
 402                                 $cmd = t3lib_div::imageMagickCommand('convert', '"'.$theFile.'" "'.$theFile.'"', $gfxConf['im_path_lzw']);
 403                                 exec($cmd);
 404
 405                                 $returnCode='IM';
 406                         } elseif (($type=='GD' || !$type) && $gfxConf['gdlib'] && !$gfxConf['gdlib_png'])       {       // GD
 407                                 $tempImage = imageCreateFromGif($theFile);
 408                                 imageGif($tempImage, $theFile);
 409                                 imageDestroy($tempImage);
 410                                 $returnCode='GD';
 411                         }
 412                 }
 413                 return $returnCode;
 414         }
 415
 416         /**
 417          * Converts a png file to gif
 418          * This converts a png file to gif IF the FLAG $GLOBALS['TYPO3_CONF_VARS']['FE']['png_to_gif'] is set true.
 419          * Usage: 5
 420          *
 421          * @param       string          $theFile        the filename with path
 422          * @return      string          new filename
 423          * @internal
 424          */
 425         function png_to_gif_by_imagemagick($theFile)    {
 426                 if ($GLOBALS['TYPO3_CONF_VARS']['FE']['png_to_gif']
 427                         && $GLOBALS['TYPO3_CONF_VARS']['GFX']['im']
 428                         && $GLOBALS['TYPO3_CONF_VARS']['GFX']['im_path_lzw']
 429                         && strtolower(substr($theFile,-4,4))=='.png'
 430                         && @is_file($theFile))  {       // IM
 431                                 $newFile = substr($theFile,0,-4).'.gif';
 432                                 $cmd = t3lib_div::imageMagickCommand('convert', '"'.$theFile.'" "'.$newFile.'"', $GLOBALS['TYPO3_CONF_VARS']['GFX']['im_path_lzw']);
 433                                 exec($cmd);
 434                                 $theFile = $newFile;
 435                                         // unlink old file?? May be bad idea bacause TYPO3 would then recreate the file every time as TYPO3 thinks the file is not generated because it's missing!! So do not unlink $theFile here!!
 436                 }
 437                 return $theFile;
 438         }
 439
 440         /**
 441          * Returns filename of the png/gif version of the input file (which can be png or gif).
 442          * If input file type does not match the wanted output type a conversion is made and temp-filename returned.
 443          * Usage: 2
 444          *
 445          * @param       string          Filepath of image file
 446          * @param       boolean         If set, then input file is converted to PNG, otherwise to GIF
 447          * @return      string          If the new image file exists, it's filepath is returned
 448          * @internal
 449          */
 450         function read_png_gif($theFile,$output_png=0)   {
 451                 if ($GLOBALS['TYPO3_CONF_VARS']['GFX']['im'] && @is_file($theFile))     {
 452                         $ext = strtolower(substr($theFile,-4,4));
 453                         if (
 454                                         ((string)$ext=='.png' && $output_png)   ||
 455                                         ((string)$ext=='.gif' && !$output_png)
 456                                 )       {
 457                                 return $theFile;
 458                         } else {
 459                                 $newFile = PATH_site.'typo3temp/readPG_'.md5($theFile.'|'.filemtime($theFile)).($output_png?'.png':'.gif');
 460                                 exec($GLOBALS['TYPO3_CONF_VARS']['GFX']['im_path'].'convert "'.$theFile.'" "'.$newFile.'"');
 461                                 if (@is_file($newFile)) return $newFile;
 462                         }
 463                 }
 464         }
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480         /*************************
 481          *
 482          * STRING FUNCTIONS
 483          *
 484          *************************/
 485
 486         /**
 487          * Truncate string
 488          * Returns a new string of max. $chars length.
 489          * If the string is longer, it will be truncated and appended with '...'.
 490          * Usage: 39
 491          *
 492          * @param       string          string to truncate
 493          * @param       integer         must be an integer with an absolute value of at least 4. if negative the string is cropped from the right end.
 494          * @param       string          String to append to the output if it is truncated, default is '...'
 495          * @return      string          new string
 496          * @deprecated          Works ONLY for single-byte charsets! USE t3lib_div::fixed_lgd_cs() instead
 497          * @see fixed_lgd_pre()
 498          */
 499         function fixed_lgd($string,$origChars,$preStr='...')    {
 500                 $chars = abs($origChars);
 501                 if ($chars >= 4)        {
 502                         if(strlen($string)>$chars)  {
 503                                 return $origChars < 0 ?
 504                                         $preStr.trim(substr($string, -($chars-3))) :
 505                                         trim(substr($string, 0, $chars-3)).$preStr;
 506                         }
 507                 }
 508                 return $string;
 509         }
 510
 511         /**
 512          * Truncate string
 513          * Returns a new string of max. $chars length.
 514          * If the string is longer, it will be truncated and prepended with '...'.
 515          * This works like fixed_lgd, but is truncated in the start of the string instead of the end
 516          * Usage: 6
 517          *
 518          * @param       string          string to truncate
 519          * @param       integer         must be an integer of at least 4
 520          * @return      string          new string
 521          * @deprecated          Use either fixed_lgd() or fixed_lgd_cs() (with negative input value for $chars)
 522          * @see fixed_lgd()
 523          */
 524         function fixed_lgd_pre($string,$chars)  {
 525                 return strrev(t3lib_div::fixed_lgd(strrev($string),$chars));
 526         }
 527
 528         /**
 529          * Truncates a string with appended/prepended "..." and takes backend character set into consideration
 530          * Use only from backend!
 531          * Usage: 75
 532          *
 533          * @param       string          string to truncate
 534          * @param       integer         must be an integer with an absolute value of at least 4. if negative the string is cropped from the right end.
 535          * @return      string          New string
 536          * @see fixed_lgd()
 537          */
 538         function fixed_lgd_cs($string,$chars)   {
 539                 if (is_object($GLOBALS['LANG']))        {
 540                         return $GLOBALS['LANG']->csConvObj->crop($GLOBALS['LANG']->charSet,$string,$chars,'...');
 541                 } else {
 542                         return t3lib_div::fixed_lgd($string, $chars);
 543                 }
 544         }
 545
 546         /**
 547          * Breaks up the text for emails
 548          * Usage: 1
 549          *
 550          * @param       string          The string to break up
 551          * @param       string          The string to implode the broken lines with (default/typically \n)
 552          * @param       integer         The line length
 553          * @deprecated          Use PHP function wordwrap()
 554          * @return      string
 555          */
 556         function breakTextForEmail($str,$implChar="\n",$charWidth=76)   {
 557                 $lines = explode(chr(10),$str);
 558                 $outArr=array();
 559                 while(list(,$lStr)=each($lines))        {
 560                         $outArr[] = t3lib_div::breakLinesForEmail($lStr,$implChar,$charWidth);
 561                 }
 562                 return implode(chr(10),$outArr);
 563         }
 564
 565         /**
 566          * Breaks up a single line of text for emails
 567          * Usage: 5
 568          *
 569          * @param       string          The string to break up
 570          * @param       string          The string to implode the broken lines with (default/typically \n)
 571          * @param       integer         The line length
 572          * @return      string
 573          * @see breakTextForEmail()
 574          */
 575         function breakLinesForEmail($str,$implChar="\n",$charWidth=76)  {
 576                 $lines=array();
 577                 $l=$charWidth;
 578                 $p=0;
 579                 while(strlen($str)>$p)  {
 580                         $substr=substr($str,$p,$l);
 581                         if (strlen($substr)==$l)        {
 582                                 $count = count(explode(' ',trim(strrev($substr))));
 583                                 if ($count>1)   {       // OK...
 584                                         $parts = explode(' ',strrev($substr),2);
 585                                         $theLine = strrev($parts[1]);
 586                                 } else {
 587                                         $afterParts = explode(' ',substr($str,$l+$p),2);
 588                                         $theLine = $substr.$afterParts[0];
 589                                 }
 590                                 if (!strlen($theLine))  {break; }       // Error, because this would keep us in an endless loop.
 591                         } else {
 592                                 $theLine=$substr;
 593                         }
 594
 595                         $lines[]=trim($theLine);
 596                         $p+=strlen($theLine);
 597                         if (!trim(substr($str,$p,$l)))  break;  // added...
 598                 }
 599                 return implode($implChar,$lines);
 600         }
 601
 602         /**
 603          * Match IP number with list of numbers with wildcard
 604          * Dispatcher method for switching into specialised IPv4 and IPv6 methods.
 605          * Usage: 10
 606          *
 607          * @param       string          $baseIP is the current remote IP address for instance, typ. REMOTE_ADDR
 608          * @param       string          $list is a comma-list of IP-addresses to match with. *-wildcard allowed instead of number, plus leaving out parts in the IP number is accepted as wildcard (eg. 192.168.*.* equals 192.168). If list is "*" no check is done and the function returns TRUE immediately.
 609          * @return      boolean         True if an IP-mask from $list matches $baseIP
 610          */
 611         function cmpIP($baseIP, $list)  {
 612                 if ($list==='*')        return TRUE;
 613                 if (strstr($baseIP, ':') && t3lib_div::validIPv6($baseIP))      {
 614                         return t3lib_div::cmpIPv6($baseIP, $list);
 615                 } else {
 616                         return t3lib_div::cmpIPv4($baseIP, $list);
 617                 }
 618         }
 619
 620         /**
 621          * Match IPv4 number with list of numbers with wildcard
 622          *
 623          * @param       string          $baseIP is the current remote IP address for instance, typ. REMOTE_ADDR
 624          * @param       string          $list is a comma-list of IP-addresses to match with. *-wildcard allowed instead of number, plus leaving out parts in the IP number is accepted as wildcard (eg. 192.168.*.* equals 192.168)
 625          * @return      boolean         True if an IP-mask from $list matches $baseIP
 626          */
 627         function cmpIPv4($baseIP, $list)        {
 628                 $IPpartsReq = explode('.',$baseIP);
 629                 if (count($IPpartsReq)==4)      {
 630                         $values = t3lib_div::trimExplode(',',$list,1);
 631
 632                         foreach($values as $test)       {
 633                                 list($test,$mask) = explode('/',$test);
 634
 635                                 if(intval($mask)) {
 636                                                 // "192.168.3.0/24"
 637                                         $lnet = ip2long($test);
 638                                         $lip = ip2long($baseIP);
 639                                         $binnet = str_pad( decbin($lnet),32,'0','STR_PAD_LEFT');
 640                                         $firstpart = substr($binnet,0,$mask);
 641                                         $binip = str_pad( decbin($lip),32,'0','STR_PAD_LEFT');
 642                                         $firstip = substr($binip,0,$mask);
 643                                         $yes = (strcmp($firstpart,$firstip)==0);
 644                                 } else {
 645                                                 // "192.168.*.*"
 646                                         $IPparts = explode('.',$test);
 647                                         $yes = 1;
 648                                         reset($IPparts);
 649                                         while(list($index,$val)=each($IPparts)) {
 650                                                 $val = trim($val);
 651                                                 if (strcmp($val,'*') && strcmp($IPpartsReq[$index],$val))       {
 652                                                         $yes=0;
 653                                                 }
 654                                         }
 655                                 }
 656                                 if ($yes) return true;
 657                         }
 658                 }
 659                 return false;
 660         }
 661
 662         /**
 663          * Match IPv6 address with a list of IPv6 prefixes
 664          *
 665          * @param       string          $baseIP is the current remote IP address for instance
 666          * @param       string          $list is a comma-list of IPv6 prefixes, could also contain IPv4 addresses
 667          * @return      boolean         True if an baseIP matches any prefix
 668          */
 669         function cmpIPv6($baseIP, $list)        {
 670                 $success = false;       // Policy default: Deny connection
 671                 $baseIP = t3lib_div::normalizeIPv6($baseIP);
 672
 673                 $values = t3lib_div::trimExplode(',',$list,1);
 674                 foreach ($values as $test)      {
 675                         list($test,$mask) = explode('/',$test);
 676                         if (t3lib_div::validIPv6($test))        {
 677                                 $test = t3lib_div::normalizeIPv6($test);
 678                                 if (intval($mask))      {
 679                                         switch ($mask) {        // test on /48 /64
 680                                                 case '48':
 681                                                         $testBin = substr(t3lib_div::IPv6Hex2Bin($test), 0, 48);
 682                                                         $baseIPBin = substr(t3lib_div::IPv6Hex2Bin($baseIP), 0, 48);
 683                                                         $success = strcmp($testBin, $baseIPBin)==0 ? true : false;
 684                                                 break;
 685                                                 case '64':
 686                                                         $testBin = substr(t3lib_div::IPv6Hex2Bin($test), 0, 64);
 687                                                         $baseIPBin = substr(t3lib_div::IPv6Hex2Bin($baseIP), 0, 64);
 688                                                         $success = strcmp($testBin, $baseIPBin)==0 ? true : false;
 689                                                 break;
 690                                                 default:
 691                                                         $success = false;
 692                                         }
 693                                 } else {
 694                                         if (t3lib_div::validIPv6($test))        {       // test on full ip address 128 bits
 695                                                 $testBin = t3lib_div::IPv6Hex2Bin($test);
 696                                                 $baseIPBin = t3lib_div::IPv6Hex2Bin($baseIP);
 697                                                 $success = strcmp($testBin, $baseIPBin)==0 ? true : false;
 698                                         }
 699                                 }
 700                         }
 701                         if ($success) return true;
 702                 }
 703                 return false;
 704         }
 705
 706         /**
 707          * [Describe function...]
 708          *
 709          * @param       [type]          $hex: ...
 710          * @return      [type]          ...
 711          */
 712         function IPv6Hex2Bin ($hex)     {
 713                 $bin = '';
 714                 $hex = str_replace(':', '', $hex);      // Replace colon to nothing
 715                 for ($i=0; $i<strlen($hex); $i=$i+2)    {
 716                         $bin.= chr(hexdec(substr($hex, $i, 2)));
 717                 }
 718                 return $bin;
 719         }
 720
 721         /**
 722          * Normalize an IPv6 address to full length
 723          *
 724          * @param       string          Given IPv6 address
 725          * @return      string          Normalized address
 726          */
 727         function normalizeIPv6($address)        {
 728                 $normalizedAddress = '';
 729                 $stageOneAddress = '';
 730
 731                 $chunks = explode('::', $address);      // Count 2 if if address has hidden zero blocks
 732                 if (count($chunks)==2)  {
 733                         $chunksLeft = explode(':', $chunks[0]);
 734                         $chunksRight = explode(':', $chunks[1]);
 735                         $left = count($chunksLeft);
 736                         $right = count($chunksRight);
 737
 738                                 // Special case: leading zero-only blocks count to 1, should be 0
 739                         if ($left==1 && strlen($chunksLeft[0])==0)      $left=0;
 740
 741                         $hiddenBlocks = 8 - ($left + $right);
 742                         $hiddenPart = '';
 743                         while ($h<$hiddenBlocks)        {
 744                                 $hiddenPart .= '0000:';
 745                                 $h++;
 746                         }
 747
 748                         if ($left == 0) {
 749                                 $stageOneAddress = $hiddenPart . $chunks[1];
 750                         } else {
 751                                 $stageOneAddress = $chunks[0] . ':' . $hiddenPart . $chunks[1];
 752                         }
 753                 } else $stageOneAddress = $address;
 754
 755                         // normalize the blocks:
 756                 $blocks = explode(':', $stageOneAddress);
 757                 $divCounter = 0;
 758                 foreach ($blocks as $block)     {
 759                         $tmpBlock = '';
 760                         $i = 0;
 761                         $hiddenZeros = 4 - strlen($block);
 762                         while ($i < $hiddenZeros)       {
 763                                 $tmpBlock .= '0';
 764                                 $i++;
 765                         }
 766                         $normalizedAddress .= $tmpBlock . $block;
 767                         if ($divCounter < 7)    {
 768                                 $normalizedAddress .= ':';
 769                                 $divCounter++;
 770                         }
 771                 }
 772                 return $normalizedAddress;
 773         }
 774
 775         /**
 776          * Validate a given IP address to the IPv6 address format.
 777          *
 778          * Example for possible format:  43FB::BB3F:A0A0:0 | ::1
 779          *
 780          * @param       string          IP address to be tested
 781          * @return      boolean         True if $ip is of IPv6 format.
 782          */
 783         function validIPv6($ip) {
 784                 $uppercaseIP = strtoupper($ip);
 785
 786                 $regex = '/^(';
 787                 $regex.= '(([\dA-F]{1,4}:){7}[\dA-F]{1,4})|';
 788                 $regex.= '(([\dA-F]{1,4}){1}::([\dA-F]{1,4}:){1,5}[\dA-F]{1,4})|';
 789                 $regex.= '(([\dA-F]{1,4}:){2}:([\dA-F]{1,4}:){1,4}[\dA-F]{1,4})|';
 790                 $regex.= '(([\dA-F]{1,4}:){3}:([\dA-F]{1,4}:){1,3}[\dA-F]{1,4})|';
 791                 $regex.= '(([\dA-F]{1,4}:){4}:([\dA-F]{1,4}:){1,2}[\dA-F]{1,4})|';
 792                 $regex.= '(([\dA-F]{1,4}:){5}:([\dA-F]{1,4}:){0,1}[\dA-F]{1,4})|';
 793                 $regex.= '(::([\dA-F]{1,4}:){0,6}[\dA-F]{1,4})';
 794                 $regex.= ')$/';
 795
 796                 return preg_match($regex, $uppercaseIP) ? true : false;
 797         }
 798
 799         /**
 800          * Match fully qualified domain name with list of strings with wildcard
 801          *
 802          * @param       string          The current remote IP address for instance, typ. REMOTE_ADDR
 803          * @param       string          A comma-list of domain names to match with. *-wildcard allowed but cannot be part of a string, so it must match the full host name (eg. myhost.*.com => correct, myhost.*domain.com => wrong)
 804          * @return      boolean         True if a domain name mask from $list matches $baseIP
 805          */
 806         function cmpFQDN($baseIP, $list)        {
 807                 if (count(explode('.',$baseIP))==4)     {
 808                         $resolvedHostName = explode('.', gethostbyaddr($baseIP));
 809                         $values = t3lib_div::trimExplode(',',$list,1);
 810
 811                         foreach($values as $test)       {
 812                                 $hostNameParts = explode('.',$test);
 813                                 $yes = 1;
 814
 815                                 foreach($hostNameParts as $index => $val)       {
 816                                         $val = trim($val);
 817                                         if (strcmp($val,'*') && strcmp($resolvedHostName[$index],$val)) {
 818                                                 $yes=0;
 819                                         }
 820                                 }
 821                                 if ($yes) return true;
 822                         }
 823                 }
 824                 return false;
 825         }
 826
 827         /**
 828          * Check for item in list
 829          * Check if an item exists in a comma-separated list of items.
 830          * Usage: 163
 831          *
 832          * @param       string          comma-separated list of items (string)
 833          * @param       string          item to check for
 834          * @return      boolean         true if $item is in $list
 835          */
 836         function inList($list,$item)    {
 837                 return strstr(','.$list.',', ','.$item.',') ? true : false;
 838         }
 839
 840         /**
 841          * Removes an item from a comma-separated list of items.
 842          * Usage: 1
 843          *
 844          * @param       string          element to remove
 845          * @param       string          comma-separated list of items (string)
 846          * @return      string          new comma-separated list of items
 847          */
 848         function rmFromList($element,$list)     {
 849                 $items = explode(',',$list);
 850                 while(list($k,$v)=each($items)) {
 851                         if ($v==$element)       {unset($items[$k]);}
 852                 }
 853                 return implode(',',$items);
 854         }
 855
 856         /**
 857          * Expand a comma-separated list of integers with ranges (eg 1,3-5,7 becomes 1,3,4,5,7).
 858          * Ranges are limited to 1000 values per range.
 859          *
 860          * @param       string          comma-separated list of integers with ranges (string)
 861          * @return      string          new comma-separated list of items
 862          * @author      Martin Kutschker <martin.kutschker@activesolution.at>
 863          */
 864         function expandList($list)      {
 865                 $items = explode(',',$list);
 866                 $list = array();
 867                 while(list(,$item)=each($items))        {
 868                         $range = explode('-',$item);
 869                         if (isset($range[1]))   {
 870                                 $runAwayBrake = 1000;
 871                                 for ($n=$range[0]; $n<=$range[1]; $n++) {
 872                                         $list[] = $n;
 873
 874                                         $runAwayBrake--;
 875                                         if ($runAwayBrake<=0)   break;
 876                                 }
 877                         } else {
 878                                 $list[] = $item;
 879                         }
 880                 }
 881
 882                 return implode(',',$list);
 883         }
 884
 885         /**
 886          * Forces the integer $theInt into the boundaries of $min and $max. If the $theInt is 'false' then the $zeroValue is applied.
 887          * Usage: 224
 888          *
 889          * @param       integer         Input value
 890          * @param       integer         Lower limit
 891          * @param       integer         Higher limit
 892          * @param       integer         Default value if input is false.
 893          * @return      integer         The input value forced into the boundaries of $min and $max
 894          */
 895         function intInRange($theInt,$min,$max=2000000000,$zeroValue=0)  {
 896                 // Returns $theInt as an integer in the integerspace from $min to $max
 897                 $theInt = intval($theInt);
 898                 if ($zeroValue && !$theInt)     {$theInt=$zeroValue;}   // If the input value is zero after being converted to integer, zeroValue may set another default value for it.
 899                 if ($theInt<$min){$theInt=$min;}
 900                 if ($theInt>$max){$theInt=$max;}
 901                 return $theInt;
 902         }
 903
 904         /**
 905          * Returns the $integer if greater than zero, otherwise returns zero.
 906          * Usage: 1
 907          *
 908          * @param       integer         Integer string to process
 909          * @return      integer
 910          */
 911         function intval_positive($theInt)       {
 912                 $theInt = intval($theInt);
 913                 if ($theInt<0){$theInt=0;}
 914                 return $theInt;
 915         }
 916
 917         /**
 918          * Returns an integer from a three part version number, eg '4.12.3' -> 4012003
 919          * Usage: 2
 920          *
 921          * @param       string          Version number on format x.x.x
 922          * @return      integer         Integer version of version number (where each part can count to 999)
 923          */
 924         function int_from_ver($verNumberStr)    {
 925                 $verParts = explode('.',$verNumberStr);
 926                 return intval((int)$verParts[0].str_pad((int)$verParts[1],3,'0',STR_PAD_LEFT).str_pad((int)$verParts[2],3,'0',STR_PAD_LEFT));
 927         }
 928
 929         /**
 930          * Returns true if the current TYPO3 version (or compatibility version) is compatible to the input version
 931          * Notice that this function compares branches, not versions (4.0.1 would be > 4.0.0 although they use the same compat_version)
 932          *
 933          * @param       string          Minimum branch number required (format x.y / e.g. "4.0" NOT "4.0.0"!)
 934          * @return      boolean         Returns true if this setup is compatible with the provided version number
 935          * @todo        Still needs a function to convert versions to branches
 936          */
 937         function compat_version($verNumberStr)  {
 938                 global $TYPO3_CONF_VARS;
 939                 $currVersionStr = $TYPO3_CONF_VARS['SYS']['compat_version'] ? $TYPO3_CONF_VARS['SYS']['compat_version'] : TYPO3_branch;
 940
 941                 if (t3lib_div::int_from_ver($currVersionStr) < t3lib_div::int_from_ver($verNumberStr))  {
 942                         return FALSE;
 943                 } else {
 944                         return TRUE;
 945                 }
 946         }
 947
 948         /**
 949          * Makes a positive integer hash out of the first 7 chars from the md5 hash of the input
 950          * Usage: 5
 951          *
 952          * @param       string          String to md5-hash
 953          * @return      integer         Returns 28bit integer-hash
 954          */
 955         function md5int($str)   {
 956                 return hexdec(substr(md5($str),0,7));
 957         }
 958
 959         /**
 960          * Returns the first 10 positions of the MD5-hash               (changed from 6 to 10 recently)
 961          *
 962          * Usage: 37
 963          *
 964          * @param       string          Input string to be md5-hashed
 965          * @param       integer         The string-length of the output
 966          * @return      string          Substring of the resulting md5-hash, being $len chars long (from beginning)
 967          */
 968         function shortMD5($input, $len=10)      {
 969                 return substr(md5($input),0,$len);
 970         }
 971
 972         /**
 973          * Takes comma-separated lists and arrays and removes all duplicates
 974          * If a value in the list is trim(empty), the value is ignored.
 975          * Usage: 16
 976          *
 977          * @param       string          Accept multiple parameters wich can be comma-separated lists of values and arrays.
 978          * @param       mixed           $secondParameter: Dummy field, which if set will show a warning!
 979          * @return      string          Returns the list without any duplicates of values, space around values are trimmed
 980          */
 981         function uniqueList($in_list, $secondParameter=NULL)    {
 982                 if (is_array($in_list)) die('t3lib_div::uniqueList() does NOT support array arguments anymore! Only string comma lists!');
 983                 if (isset($secondParameter))    die('t3lib_div::uniqueList() does NOT support more than a single argument value anymore. You have specified more than one.');
 984
 985                 return implode(',',array_unique(t3lib_div::trimExplode(',',$in_list,1)));
 986         }
 987
 988         /**
 989          * Splits a reference to a file in 5 parts
 990          * Usage: 43
 991          *
 992          * @param       string          Filename/filepath to be analysed
 993          * @return      array           Contains keys [path], [file], [filebody], [fileext], [realFileext]
 994          */
 995         function split_fileref($fileref)        {
 996                 $reg = array();
 997                 if (    ereg('(.*/)(.*)$',$fileref,$reg)        )       {
 998                         $info['path'] = $reg[1];
 999                         $info['file'] = $reg[2];
1000                 } else {
1001                         $info['path'] = '';
1002                         $info['file'] = $fileref;
1003                 }
1004                 $reg='';
1005                 if (    ereg('(.*)\.([^\.]*$)',$info['file'],$reg)      )       {
1006                         $info['filebody'] = $reg[1];
1007                         $info['fileext'] = strtolower($reg[2]);
1008                         $info['realFileext'] = $reg[2];
1009                 } else {
1010                         $info['filebody'] = $info['file'];
1011                         $info['fileext'] = '';
1012                 }
1013                 reset($info);
1014                 return $info;
1015         }
1016
1017         /**
1018          * Returns the directory part of a path without trailing slash
1019          * If there is no dir-part, then an empty string is returned.
1020          * Behaviour:
1021          *
1022          * '/dir1/dir2/script.php' => '/dir1/dir2'
1023          * '/dir1/' => '/dir1'
1024          * 'dir1/script.php' => 'dir1'
1025          * 'd/script.php' => 'd'
1026          * '/script.php' => ''
1027          * '' => ''
1028          * Usage: 5
1029          *
1030          * @param       string          Directory name / path
1031          * @return      string          Processed input value. See function description.
1032          */
1033         function dirname($path) {
1034                 $p=t3lib_div::revExplode('/',$path,2);
1035                 return count($p)==2?$p[0]:'';
1036         }
1037
1038         /**
1039          * Modifies a HTML Hex color by adding/subtracting $R,$G and $B integers
1040          * Usage: 11
1041          *
1042          * @param       string          A hexadecimal color code, #xxxxxx
1043          * @param       integer         Offset value 0-255
1044          * @param       integer         Offset value 0-255
1045          * @param       integer         Offset value 0-255
1046          * @return      string          A hexadecimal color code, #xxxxxx, modified according to input vars
1047          * @see modifyHTMLColorAll()
1048          */
1049         function modifyHTMLColor($color,$R,$G,$B)       {
1050                 // This takes a hex-color (# included!) and adds $R, $G and $B to the HTML-color (format: #xxxxxx) and returns the new color
1051                 $nR = t3lib_div::intInRange(hexdec(substr($color,1,2))+$R,0,255);
1052                 $nG = t3lib_div::intInRange(hexdec(substr($color,3,2))+$G,0,255);
1053                 $nB = t3lib_div::intInRange(hexdec(substr($color,5,2))+$B,0,255);
1054                 return '#'.
1055                         substr('0'.dechex($nR),-2).
1056                         substr('0'.dechex($nG),-2).
1057                         substr('0'.dechex($nB),-2);
1058         }
1059
1060         /**
1061          * Modifies a HTML Hex color by adding/subtracting $all integer from all R/G/B channels
1062          * Usage: 6
1063          *
1064          * @param       string          A hexadecimal color code, #xxxxxx
1065          * @param       integer         Offset value 0-255 for all three channels.
1066          * @return      string          A hexadecimal color code, #xxxxxx, modified according to input vars
1067          * @see modifyHTMLColor()
1068          */
1069         function modifyHTMLColorAll($color,$all)        {
1070                 return t3lib_div::modifyHTMLColor($color,$all,$all,$all);
1071         }
1072
1073         /**
1074          * Removes comma (if present) in the end of string
1075          * Usage: 2
1076          *
1077          * @param       string          String from which the comma in the end (if any) will be removed.
1078          * @return      string
1079          */
1080         function rm_endcomma($string)   {
1081                 return ereg_replace(',$','',$string);
1082         }
1083
1084         /**
1085          * strtoupper which converts danish (and other characters) characters as well
1086          * Usage: 0
1087          *
1088          * @param       string          String to process
1089          * @return      string
1090          * @deprecated          Use t3lib_cs::conv_case() instead or for HTML output, wrap your content in <span class="uppercase">...</span>)
1091          * @ignore
1092          */
1093         function danish_strtoupper($string)     {
1094                 $value = strtoupper($string);
1095                 return strtr($value, 'áéúíâêûôîæøåäöü', 'ÁÉÚÍÄËÜÖÏÆØÅÄÖÜ');
1096         }
1097
1098         /**
1099          * Change umlaut characters to plain ASCII with normally two character target
1100          * Only known characters will be converted, so don't expect a result for any character.
1101          *
1102          * ä => ae, Ö => Oe
1103          *
1104          * @param       string          String to convert.
1105          * @deprecated          Works only for western europe single-byte charsets! Use t3lib_cs::specCharsToASCII() instead!
1106          * @return      string
1107          */
1108         function convUmlauts($str)      {
1109                 $pat  = array ( '/ä/',  '/Ä/',  '/ö/',  '/Ö/',  '/ü/',  '/Ü/',  '/ß/',  '/å/',  '/Å/',  '/ø/',  '/Ø/',  '/æ/',  '/Æ/'   );
1110                 $repl = array ( 'ae',   'Ae',   'oe',   'Oe',   'ue',   'Ue',   'ss',   'aa',   'AA',   'oe',   'OE',   'ae',   'AE'    );
1111                 return preg_replace($pat,$repl,$str);
1112         }
1113
1114         /**
1115          * Tests if the input is an integer.
1116          * Usage: 77
1117          *
1118          * @param       mixed           Any input variable to test.
1119          * @return      boolean         Returns true if string is an integer
1120          */
1121         function testInt($var)  {
1122                 return !strcmp($var,intval($var));
1123         }
1124
1125         /**
1126          * Returns true if the first part of $str matches the string $partStr
1127          * Usage: 59
1128          *
1129          * @param       string          Full string to check
1130          * @param       string          Reference string which must be found as the "first part" of the full string
1131          * @return      boolean         True if $partStr was found to be equal to the first part of $str
1132          */
1133         function isFirstPartOfStr($str,$partStr)        {
1134                 // Returns true, if the first part of a $str equals $partStr and $partStr is not ''
1135                 $psLen = strlen($partStr);
1136                 if ($psLen)     {
1137                         return substr($str,0,$psLen)==(string)$partStr;
1138                 } else return false;
1139         }
1140
1141         /**
1142          * Formats the input integer $sizeInBytes as bytes/kilobytes/megabytes (-/K/M)
1143          * Usage: 53
1144          *
1145          * @param       integer         Number of bytes to format.
1146          * @param       string          Labels for bytes, kilo, mega and giga separated by vertical bar (|) and possibly encapsulated in "". Eg: " | K| M| G" (which is the default value)
1147          * @return      string          Formatted representation of the byte number, for output.
1148          */
1149         function formatSize($sizeInBytes,$labels='')    {
1150
1151                         // Set labels:
1152                 if (strlen($labels) == 0) {
1153                     $labels = ' | K| M| G';
1154                 } else {
1155                     $labels = str_replace('"','',$labels);
1156                 }
1157                 $labelArr = explode('|',$labels);
1158
1159                         // Find size:
1160                 if ($sizeInBytes>900)   {
1161                         if ($sizeInBytes>900000000)     {       // GB
1162                                 $val = $sizeInBytes/(1024*1024*1024);
1163                                 return number_format($val, (($val<20)?1:0), '.', '').$labelArr[3];
1164                         }
1165                         elseif ($sizeInBytes>900000)    {       // MB
1166                                 $val = $sizeInBytes/(1024*1024);
1167                                 return number_format($val, (($val<20)?1:0), '.', '').$labelArr[2];
1168                         } else {        // KB
1169                                 $val = $sizeInBytes/(1024);
1170                                 return number_format($val, (($val<20)?1:0), '.', '').$labelArr[1];
1171                         }
1172                 } else {        // Bytes
1173                         return $sizeInBytes.$labelArr[0];
1174                 }
1175         }
1176
1177         /**
1178          * Returns microtime input to milliseconds
1179          * Usage: 2
1180          *
1181          * @param       string          Microtime
1182          * @return      integer         Microtime input string converted to an integer (milliseconds)
1183          */
1184         function convertMicrotime($microtime)   {
1185                 $parts = explode(' ',$microtime);
1186                 return round(($parts[0]+$parts[1])*1000);
1187         }
1188
1189         /**
1190          * This splits a string by the chars in $operators (typical /+-*) and returns an array with them in
1191          * Usage: 2
1192          *
1193          * @param       string          Input string, eg "123 + 456 / 789 - 4"
1194          * @param       string          Operators to split by, typically "/+-*"
1195          * @return      array           Array with operators and operands separated.
1196          * @see tslib_cObj::calc(), tslib_gifBuilder::calcOffset()
1197          */
1198         function splitCalc($string,$operators)  {
1199                 $res = Array();
1200                 $sign='+';
1201                 while($string)  {
1202                         $valueLen=strcspn($string,$operators);
1203                         $value=substr($string,0,$valueLen);
1204                         $res[] = Array($sign,trim($value));
1205                         $sign=substr($string,$valueLen,1);
1206                         $string=substr($string,$valueLen+1);
1207                 }
1208                 reset($res);
1209                 return $res;
1210         }
1211
1212         /**
1213          * Calculates the input by +,-,*,/,%,^ with priority to + and -
1214          * Usage: 1
1215          *
1216          * @param       string          Input string, eg "123 + 456 / 789 - 4"
1217          * @return      integer         Calculated value. Or error string.
1218          * @see calcParenthesis()
1219          */
1220         function calcPriority($string)  {
1221                 $string=ereg_replace('[[:space:]]*','',$string);        // removing all whitespace
1222                 $string='+'.$string;    // Ensuring an operator for the first entrance
1223                 $qm='\*\/\+-^%';
1224                 $regex = '(['.$qm.'])(['.$qm.']?[0-9\.]*)';
1225                         // split the expression here:
1226                 $reg = array();
1227                 preg_match_all('/'.$regex.'/',$string,$reg);
1228
1229                 reset($reg[2]);
1230                 $number=0;
1231                 $Msign='+';
1232                 $err='';
1233                 $buffer=doubleval(current($reg[2]));
1234                 next($reg[2]);  // Advance pointer
1235                 while(list($k,$v)=each($reg[2]))        {
1236                         $v=doubleval($v);
1237                         $sign = $reg[1][$k];
1238                         if ($sign=='+' || $sign=='-')   {
1239                                 $number = $Msign=='-' ? $number-=$buffer : $number+=$buffer;
1240                                 $Msign = $sign;
1241                                 $buffer=$v;
1242                         } else {
1243                                 if ($sign=='/') {if ($v) $buffer/=$v; else $err='dividing by zero';}
1244                                 if ($sign=='%') {if ($v) $buffer%=$v; else $err='dividing by zero';}
1245                                 if ($sign=='*') {$buffer*=$v;}
1246                                 if ($sign=='^') {$buffer=pow($buffer,$v);}
1247                         }
1248                 }
1249                 $number = $Msign=='-' ? $number-=$buffer : $number+=$buffer;
1250                 return $err ? 'ERROR: '.$err : $number;
1251         }
1252
1253         /**
1254          * Calculates the input with parenthesis levels
1255          * Usage: 2
1256          *
1257          * @param       string          Input string, eg "(123 + 456) / 789 - 4"
1258          * @return      integer         Calculated value. Or error string.
1259          * @see calcPriority(), tslib_cObj::stdWrap()
1260          */
1261         function calcParenthesis($string)       {
1262                 $securC=100;
1263                 do {
1264                         $valueLenO=strcspn($string,'(');
1265                         $valueLenC=strcspn($string,')');
1266                         if ($valueLenC==strlen($string) || $valueLenC < $valueLenO)     {
1267                                 $value = t3lib_div::calcPriority(substr($string,0,$valueLenC));
1268                                 $string = $value.substr($string,$valueLenC+1);
1269                                 return $string;
1270                         } else {
1271                                 $string = substr($string,0,$valueLenO).t3lib_div::calcParenthesis(substr($string,$valueLenO+1));
1272                         }
1273                                 // Security:
1274                         $securC--;
1275                         if ($securC<=0) break;
1276                 } while($valueLenO<strlen($string));
1277                 return $string;
1278         }
1279
1280         /**
1281          * Inverse version of htmlspecialchars()
1282          * Usage: 4
1283          *
1284          * @param       string          Value where &gt;, &lt;, &quot; and &amp; should be converted to regular chars.
1285          * @return      string          Converted result.
1286          */
1287         function htmlspecialchars_decode($value)        {
1288                 $value = str_replace('&gt;','>',$value);
1289                 $value = str_replace('&lt;','<',$value);
1290                 $value = str_replace('&quot;','"',$value);
1291                 $value = str_replace('&amp;','&',$value);
1292                 return $value;
1293         }
1294
1295         /**
1296          * Re-converts HTML entities if they have been converted by htmlspecialchars()
1297          * Usage: 10
1298          *
1299          * @param       string          String which contains eg. "&amp;amp;" which should stay "&amp;". Or "&amp;#1234;" to "&#1234;". Or "&amp;#x1b;" to "&#x1b;"
1300          * @return      string          Converted result.
1301          */
1302         function deHSCentities($str)    {
1303                 return ereg_replace('&amp;([#[:alnum:]]*;)','&\1',$str);
1304         }
1305
1306         /**
1307          * This function is used to escape any ' -characters when transferring text to JavaScript!
1308          * Usage: 3
1309          *
1310          * @param       string          String to escape
1311          * @param       boolean         If set, also backslashes are escaped.
1312          * @param       string          The character to escape, default is ' (single-quote)
1313          * @return      string          Processed input string
1314          */
1315         function slashJS($string,$extended=0,$char="'") {
1316                 if ($extended)  {$string = str_replace ("\\", "\\\\", $string);}
1317                 return str_replace ($char, "\\".$char, $string);
1318         }
1319
1320         /**
1321          * Version of rawurlencode() where all spaces (%20) are re-converted to space-characters.
1322          * Usefull when passing text to JavaScript where you simply url-encode it to get around problems with syntax-errors, linebreaks etc.
1323          * Usage: 4
1324          *
1325          * @param       string          String to raw-url-encode with spaces preserved
1326          * @return      string          Rawurlencoded result of input string, but with all %20 (space chars) converted to real spaces.
1327          */
1328         function rawUrlEncodeJS($str)   {
1329                 return str_replace('%20',' ',rawurlencode($str));
1330         }
1331
1332         /**
1333          * rawurlencode which preserves "/" chars
1334          * Usefull when filepaths should keep the "/" chars, but have all other special chars encoded.
1335          * Usage: 5
1336          *
1337          * @param       string          Input string
1338          * @return      string          Output string
1339          */
1340         function rawUrlEncodeFP($str)   {
1341                 return str_replace('%2F','/',rawurlencode($str));
1342         }
1343
1344         /**
1345          * Checking syntax of input email address
1346          * Usage: 5
1347          *
1348          * @param       string          Input string to evaluate
1349          * @return      boolean         Returns true if the $email address (input string) is valid; Has a "@", domain name with at least one period and only allowed a-z characters.
1350          */
1351         function validEmail($email)     {
1352                 $email = trim ($email);
1353                 if (strstr($email,' '))  return FALSE;
1354                 return ereg('^[A-Za-z0-9\._-]+[@][A-Za-z0-9\._-]+[\.].[A-Za-z0-9]+$',$email) ? TRUE : FALSE;
1355         }
1356
1357         /**
1358          * Formats a string for output between <textarea>-tags
1359          * All content outputted in a textarea form should be passed through this function
1360          * Not only is the content htmlspecialchar'ed on output but there is also a single newline added in the top. The newline is necessary because browsers will ignore the first newline after <textarea> if that is the first character. Therefore better set it!
1361          * Usage: 23
1362          *
1363          * @param       string          Input string to be formatted.
1364          * @return      string          Formatted for <textarea>-tags
1365          */
1366         function formatForTextarea($content)    {
1367                 return chr(10).htmlspecialchars($content);
1368         }
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381         /*************************
1382          *
1383          * ARRAY FUNCTIONS
1384          *
1385          *************************/
1386
1387         /**
1388          * Check if an item exists in an array
1389          * Please note that the order of parameters is reverse compared to the php4-function in_array()!!!
1390          * Usage: 3
1391          *
1392          * @param       array           one-dimensional array of items
1393          * @param       string          item to check for
1394          * @return      boolean         true if $item is in the one-dimensional array $in_array
1395          * @internal
1396          */
1397         function inArray($in_array,$item)       {
1398                 if (is_array($in_array))        {
1399                         while (list(,$val)=each($in_array))     {
1400                                 if (!is_array($val) && !strcmp($val,$item)) return true;
1401                         }
1402                 }
1403         }
1404
1405         /**
1406          * Explodes a $string delimited by $delim and passes each item in the array through intval().
1407          * Corresponds to explode(), but with conversion to integers for all values.
1408          * Usage: 76
1409          *
1410          * @param       string          Delimiter string to explode with
1411          * @param       string          The string to explode
1412          * @return      array           Exploded values, all converted to integers
1413          */
1414         function intExplode($delim, $string)    {
1415                 $temp = explode($delim,$string);
1416                 while(list($key,$val)=each($temp))      {
1417                         $temp[$key]=intval($val);
1418                 }
1419                 reset($temp);
1420                 return $temp;
1421         }
1422
1423         /**
1424          * Reverse explode which explodes the string counting from behind.
1425          * Thus t3lib_div::revExplode(':','my:words:here',2) will return array('my:words','here')
1426          * Usage: 8
1427          *
1428          * @param       string          Delimiter string to explode with
1429          * @param       string          The string to explode
1430          * @param       integer         Number of array entries
1431          * @return      array           Exploded values
1432          */
1433         function revExplode($delim, $string, $count=0)  {
1434                 $temp = explode($delim,strrev($string),$count);
1435                 while(list($key,$val)=each($temp))      {
1436                         $temp[$key]=strrev($val);
1437                 }
1438                 $temp=array_reverse($temp);
1439                 reset($temp);
1440                 return $temp;
1441         }
1442
1443         /**
1444          * Explodes a string and trims all values for whitespace in the ends.
1445          * If $onlyNonEmptyValues is set, then all blank ('') values are removed.
1446          * Usage: 256
1447          *
1448          * @param       string          Delimiter string to explode with
1449          * @param       string          The string to explode
1450          * @param       boolean         If set, all empty values (='') will NOT be set in output
1451          * @return      array           Exploded values
1452          */
1453         function trimExplode($delim, $string, $onlyNonEmptyValues=0)    {
1454                 $temp = explode($delim,$string);
1455                 $newtemp=array();
1456                 while(list($key,$val)=each($temp))      {
1457                         if (!$onlyNonEmptyValues || strcmp('',trim($val)))      {
1458                                 $newtemp[]=trim($val);
1459                         }
1460                 }
1461                 reset($newtemp);
1462                 return $newtemp;
1463         }
1464
1465         /**
1466          * Remove duplicate values from an array
1467          * Usage: 0
1468          *
1469          * @param       array           Array of values to make unique
1470          * @return      array
1471          * @ignore
1472          * @deprecated          Use the PHP function array_unique instead
1473          */
1474         function uniqueArray($valueArray)       {
1475                 return array_unique($valueArray);
1476         }
1477
1478         /**
1479          * Removes the value $cmpValue from the $array if found there. Returns the modified array
1480          * Usage: 3
1481          *
1482          * @param       array           Array containing the values
1483          * @param       string          Value to search for and if found remove array entry where found.
1484          * @return      array           Output array with entries removed if search string is found
1485          */
1486         function removeArrayEntryByValue($array,$cmpValue)      {
1487                 if (is_array($array))   {
1488                         reset($array);
1489                         while(list($k,$v)=each($array)) {
1490                                 if (is_array($v))       {
1491                                         $array[$k] = t3lib_div::removeArrayEntryByValue($v,$cmpValue);
1492                                 } else {
1493                                         if (!strcmp($v,$cmpValue))      {
1494                                                 unset($array[$k]);
1495                                         }
1496                                 }
1497                         }
1498                 }
1499                 reset($array);
1500                 return $array;
1501         }
1502
1503         /**
1504          * Implodes a multidim-array into GET-parameters (eg. &param[key][key2]=value2&param[key][key3]=value3)
1505          * Usage: 24
1506          *
1507          * @param       string          Name prefix for entries. Set to blank if you wish none.
1508          * @param       array           The (multidim) array to implode
1509          * @param       string          (keep blank)
1510          * @param       boolean         If set, parameters which were blank strings would be removed.
1511          * @param       boolean         If set, the param name itself (for example "param[key][key2]") would be rawurlencoded as well.
1512          * @return      string          Imploded result, fx. &param[key][key2]=value2&param[key][key3]=value3
1513          * @see explodeUrl2Array()
1514          */
1515         function implodeArrayForUrl($name,$theArray,$str='',$skipBlank=0,$rawurlencodeParamName=0)      {
1516                 if (is_array($theArray))        {
1517                         foreach($theArray as $Akey => $AVal)    {
1518                                 $thisKeyName = $name ? $name.'['.$Akey.']' : $Akey;
1519                                 if (is_array($AVal))    {
1520                                         $str = t3lib_div::implodeArrayForUrl($thisKeyName,$AVal,$str,$skipBlank,$rawurlencodeParamName);
1521                                 } else {
1522                                         if (!$skipBlank || strcmp($AVal,''))    {
1523                                                 $str.='&'.($rawurlencodeParamName ? rawurlencode($thisKeyName) : $thisKeyName).
1524                                                         '='.rawurlencode($AVal);
1525                                         }
1526                                 }
1527                         }
1528                 }
1529                 return $str;
1530         }
1531
1532         /**
1533          * Explodes a string with GETvars (eg. "&id=1&type=2&ext[mykey]=3") into an array
1534          *
1535          * @param       string          GETvars string
1536          * @param       boolean         If set, the string will be parsed into a multidimensional array if square brackets are used in variable names (using PHP function parse_str())
1537          * @return      array           Array of values. All values AND keys are rawurldecoded() as they properly should be. But this means that any implosion of the array again must rawurlencode it!
1538          * @see implodeArrayForUrl()
1539          */
1540         function explodeUrl2Array($string,$multidim=FALSE)      {
1541                 $output = array();
1542                 if ($multidim)  {
1543                         parse_str($string,$output);
1544                 } else {
1545                         $p = explode('&',$string);
1546                         foreach($p as $v)       {
1547                                 if (strlen($v)) {
1548                                         list($pK,$pV) = explode('=',$v,2);
1549                                         $output[rawurldecode($pK)] = rawurldecode($pV);
1550                                 }
1551                         }
1552                 }
1553                 return $output;
1554         }
1555
1556         /**
1557          * Returns an array with selected keys from incoming data.
1558          * (Better read source code if you want to find out...)
1559          * Usage: 3
1560          *
1561          * @param       string          List of variable/key names
1562          * @param       array           Array from where to get values based on the keys in $varList
1563          * @param       boolean         If set, then t3lib_div::_GP() is used to fetch the value if not found (isset) in the $getArray
1564          * @return      array           Output array with selected variables.
1565          */
1566         function compileSelectedGetVarsFromArray($varList,$getArray,$GPvarAlt=1)        {
1567                 $keys = t3lib_div::trimExplode(',',$varList,1);
1568                 $outArr=array();
1569                 foreach($keys as $v)    {
1570                         if (isset($getArray[$v]))       {
1571                                 $outArr[$v]=$getArray[$v];
1572                         } elseif ($GPvarAlt) {
1573                                 $outArr[$v]=t3lib_div::_GP($v);
1574                         }
1575                 }
1576                 return $outArr;
1577         }
1578
1579         /**
1580          * AddSlash array
1581          * This function traverses a multidimentional array and adds slashes to the values.
1582          * NOTE that the input array is and argument by reference.!!
1583          * Twin-function to stripSlashesOnArray
1584          * Usage: 8
1585          *
1586          * @param       array           Multidimensional input array, (REFERENCE!)
1587          * @return      array
1588          */
1589         function addSlashesOnArray(&$theArray)  {
1590                 if (is_array($theArray))        {
1591                         reset($theArray);
1592                         while(list($Akey,$AVal)=each($theArray))        {
1593                                 if (is_array($AVal))    {
1594                                         t3lib_div::addSlashesOnArray($theArray[$Akey]);
1595                                 } else {
1596                                         $theArray[$Akey] = addslashes($AVal);
1597                                 }
1598                         }
1599                         reset($theArray);
1600                 }
1601         }
1602
1603         /**
1604          * StripSlash array
1605          * This function traverses a multidimentional array and strips slashes to the values.
1606          * NOTE that the input array is and argument by reference.!!
1607          * Twin-function to addSlashesOnArray
1608          * Usage: 10
1609          *
1610          * @param       array           Multidimensional input array, (REFERENCE!)
1611          * @return      array
1612          */
1613         function stripSlashesOnArray(&$theArray)        {
1614                 if (is_array($theArray))        {
1615                         reset($theArray);
1616                         while(list($Akey,$AVal)=each($theArray))        {
1617                                 if (is_array($AVal))    {
1618                                         t3lib_div::stripSlashesOnArray($theArray[$Akey]);
1619                                 } else {
1620                                         $theArray[$Akey] = stripslashes($AVal);
1621                                 }
1622                         }
1623                         reset($theArray);
1624                 }
1625         }
1626
1627         /**
1628          * Either slashes ($cmd=add) or strips ($cmd=strip) array $arr depending on $cmd
1629          * Usage: 0
1630          *
1631          * @param       array           Multidimensional input array
1632          * @param       string          "add" or "strip", depending on usage you wish.
1633          * @return      array
1634          */
1635         function slashArray($arr,$cmd)  {
1636                 if ($cmd=='strip')      t3lib_div::stripSlashesOnArray($arr);
1637                 if ($cmd=='add')        t3lib_div::addSlashesOnArray($arr);
1638                 return $arr;
1639         }
1640
1641         /**
1642          * Merges two arrays recursively and "binary safe" (integer keys are overridden as well), overruling similar values in the first array ($arr0) with the values of the second array ($arr1)
1643          * In case of identical keys, ie. keeping the values of the second.
1644          * Usage: 0
1645          *
1646          * @param       array           First array
1647          * @param       array           Second array, overruling the first array
1648          * @param       boolean         If set, keys that are NOT found in $arr0 (first array) will not be set. Thus only existing value can/will be overruled from second array.
1649          * @param       boolean         If set, values from $arr1 will overrule if they are empty. Default: true
1650          * @return      array           Resulting array where $arr1 values has overruled $arr0 values
1651          */
1652         function array_merge_recursive_overrule($arr0,$arr1,$notAddKeys=0,$includeEmtpyValues=true) {
1653                 reset($arr1);
1654                 while(list($key,$val) = each($arr1)) {
1655                         if(is_array($arr0[$key])) {
1656                                 if (is_array($arr1[$key]))      {
1657                                         $arr0[$key] = t3lib_div::array_merge_recursive_overrule($arr0[$key],$arr1[$key],$notAddKeys);
1658                                 }
1659                         } else {
1660                                 if ($notAddKeys) {
1661                                         if (isset($arr0[$key])) {
1662                                                 if ($includeEmtpyValues OR $val) {
1663                                                         $arr0[$key] = $val;
1664                                                 }
1665                                         }
1666                                 } else {
1667                                         if ($includeEmtpyValues OR $val) {
1668                                                 $arr0[$key] = $val;
1669                                         }
1670                                 }
1671                         }
1672                 }
1673                 reset($arr0);
1674                 return $arr0;
1675         }
1676
1677         /**
1678          * An array_merge function where the keys are NOT renumbered as they happen to be with the real php-array_merge function. It is "binary safe" in the sense that integer keys are overridden as well.
1679          * Usage: 16
1680          *
1681          * @param       array           First array
1682          * @param       array           Second array
1683          * @return      array           Merged result.
1684          */
1685         function array_merge($arr1,$arr2)       {
1686                 return $arr2+$arr1;
1687         }
1688
1689         /**
1690          * Takes a row and returns a CSV string of the values with $delim (default is ,) and $quote (default is ") as separator chars.
1691          * Usage: 5
1692          *
1693          * @param       array           Input array of values
1694          * @param       string          Delimited, default is comman
1695          * @param       string          Quote-character to wrap around the values.
1696          * @return      string          A single line of CSV
1697          */
1698         function csvValues($row,$delim=',',$quote='"')  {
1699                 reset($row);
1700                 $out=array();
1701                 while(list(,$value)=each($row)) {
1702                         list($valPart) = explode(chr(10),$value);
1703                         $valPart = trim($valPart);
1704                         $out[]=str_replace($quote,$quote.$quote,$valPart);
1705                 }
1706                 $str = $quote.implode($quote.$delim.$quote,$out).$quote;
1707                 return $str;
1708         }
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725         /*************************
1726          *
1727          * HTML/XML PROCESSING
1728          *
1729          *************************/
1730
1731         /**
1732          * Returns an array with all attributes of the input HTML tag as key/value pairs. Attributes are only lowercase a-z
1733          * $tag is either a whole tag (eg '<TAG OPTION ATTRIB=VALUE>') or the parameterlist (ex ' OPTION ATTRIB=VALUE>')
1734          * If a attribute is empty (I call it 'an option'), then the value for the key is empty. You can check if it existed with isset()
1735          * Usage: 8
1736          *
1737          * @param       string          HTML-tag string (or attributes only)
1738          * @return      array           Array with the attribute values.
1739          */
1740         function get_tag_attributes($tag)       {
1741                 $components = t3lib_div::split_tag_attributes($tag);
1742                 $name = '';      // attribute name is stored here
1743                 $valuemode = '';
1744                 if (is_array($components))      {
1745                         while (list($key,$val) = each ($components))    {
1746                                 if ($val != '=')        {       // Only if $name is set (if there is an attribute, that waits for a value), that valuemode is enabled. This ensures that the attribute is assigned it's value
1747                                         if ($valuemode) {
1748                                                 if ($name)      {
1749                                                         $attributes[$name] = $val;
1750                                                         $name = '';
1751                                                 }
1752                                         } else {
1753                                                 if ($key = strtolower(ereg_replace('[^a-zA-Z0-9]','',$val)))    {
1754                                                         $attributes[$key] = '';
1755                                                         $name = $key;
1756                                                 }
1757                                         }
1758                                         $valuemode = '';
1759                                 } else {
1760                                         $valuemode = 'on';
1761                                 }
1762                         }
1763                         if (is_array($attributes))      reset($attributes);
1764                         return $attributes;
1765                 }
1766         }
1767
1768         /**
1769          * Returns an array with the 'components' from an attribute list from an HTML tag. The result is normally analyzed by get_tag_attributes
1770          * Removes tag-name if found
1771          * Usage: 2
1772          *
1773          * @param       string          HTML-tag string (or attributes only)
1774          * @return      array           Array with the attribute values.
1775          * @internal
1776          */
1777         function split_tag_attributes($tag)     {
1778                 $tag_tmp = trim(eregi_replace ('^<[^[:space:]]*','',trim($tag)));
1779                         // Removes any > in the end of the string
1780                 $tag_tmp = trim(eregi_replace ('>$','',$tag_tmp));
1781
1782                 while (strcmp($tag_tmp,''))     {       // Compared with empty string instead , 030102
1783                         $firstChar=substr($tag_tmp,0,1);
1784                         if (!strcmp($firstChar,'"') || !strcmp($firstChar,"'")) {
1785                                 $reg=explode($firstChar,$tag_tmp,3);
1786                                 $value[]=$reg[1];
1787                                 $tag_tmp=trim($reg[2]);
1788                         } elseif (!strcmp($firstChar,'=')) {
1789                                 $value[] = '=';
1790                                 $tag_tmp = trim(substr($tag_tmp,1));            // Removes = chars.
1791                         } else {
1792                                         // There are '' around the value. We look for the next ' ' or '>'
1793                                 $reg = split('[[:space:]=]',$tag_tmp,2);
1794                                 $value[] = trim($reg[0]);
1795                                 $tag_tmp = trim(substr($tag_tmp,strlen($reg[0]),1).$reg[1]);
1796                         }
1797                 }
1798                 if (is_array($value))   reset($value);
1799                 return $value;
1800         }
1801
1802         /**
1803          * Implodes attributes in the array $arr for an attribute list in eg. and HTML tag (with quotes)
1804          * Usage: 14
1805          *
1806          * @param       array           Array with attribute key/value pairs, eg. "bgcolor"=>"red", "border"=>0
1807          * @param       boolean         If set the resulting attribute list will have a) all attributes in lowercase (and duplicates weeded out, first entry taking precedence) and b) all values htmlspecialchar()'ed. It is recommended to use this switch!
1808          * @param       boolean         If true, don't check if values are blank. Default is to omit attributes with blank values.
1809          * @return      string          Imploded attributes, eg. 'bgcolor="red" border="0"'
1810          */
1811         function implodeAttributes($arr,$xhtmlSafe=FALSE,$dontOmitBlankAttribs=FALSE)   {
1812                 if (is_array($arr))     {
1813                         if ($xhtmlSafe) {
1814                                 $newArr=array();
1815                                 foreach($arr as $p => $v)       {
1816                                         if (!isset($newArr[strtolower($p)])) $newArr[strtolower($p)] = htmlspecialchars($v);
1817                                 }
1818                                 $arr = $newArr;
1819                         }
1820                         $list = array();
1821                         foreach($arr as $p => $v)       {
1822                                 if (strcmp($v,'') || $dontOmitBlankAttribs)     {$list[]=$p.'="'.$v.'"';}
1823                         }
1824                         return implode(' ',$list);
1825                 }
1826         }
1827
1828         /**
1829          * Implodes attributes in the array $arr for an attribute list in eg. and HTML tag (with quotes)
1830          *
1831          * @param       array           See implodeAttributes()
1832          * @param       boolean         See implodeAttributes()
1833          * @param       boolean         See implodeAttributes()
1834          * @return      string          See implodeAttributes()
1835          * @deprecated  Name was changed into implodeAttributes
1836          * @see implodeAttributes()
1837          */
1838         function implodeParams($arr,$xhtmlSafe=FALSE,$dontOmitBlankAttribs=FALSE)       {
1839                 return t3lib_div::implodeAttributes($arr,$xhtmlSafe,$dontOmitBlankAttribs);
1840         }
1841
1842         /**
1843          * Wraps JavaScript code XHTML ready with <script>-tags
1844          * Automatic re-identing of the JS code is done by using the first line as ident reference.
1845          * This is nice for identing JS code with PHP code on the same level.
1846          *
1847          * @param       string          JavaScript code
1848          * @param       boolean         Wrap script element in linebreaks? Default is TRUE.
1849          * @return      string          The wrapped JS code, ready to put into a XHTML page
1850          * @author      Ingmar Schlecht <ingmars@web.de>
1851          * @author      René Fritz <r.fritz@colorcube.de>
1852          */
1853         function wrapJS($string, $linebreak=TRUE) {
1854                 if(trim($string)) {
1855                                 // <script wrapped in nl?
1856                         $cr = $linebreak? "\n" : '';
1857
1858                                 // remove nl from the beginning
1859                         $string = preg_replace ('/^\n+/', '', $string);
1860                                 // re-ident to one tab using the first line as reference
1861                         $match = array();
1862                         if(preg_match('/^(\t+)/',$string,$match)) {
1863                                 $string = str_replace($match[1],"\t", $string);
1864                         }
1865                         $string = $cr.'<script type="text/javascript">
1866 /*<![CDATA[*/
1867 '.$string.'
1868 /*]]>*/
1869 </script>'.$cr;
1870                 }
1871                 return trim($string);
1872         }
1873
1874
1875         /**
1876          * Parses XML input into a PHP array with associative keys
1877          * Usage: 0
1878          *
1879          * @param       string          XML data input
1880          * @param       integer         Number of element levels to resolve the XML into an array. Any further structure will be set as XML.
1881          * @return      mixed           The array with the parsed structure unless the XML parser returns with an error in which case the error message string is returned.
1882          * @author bisqwit at iki dot fi dot not dot for dot ads dot invalid / http://dk.php.net/xml_parse_into_struct + kasperYYYY@typo3.com
1883          */
1884         function xml2tree($string,$depth=999) {
1885                 $parser = xml_parser_create();
1886                 $vals = array();
1887                 $index = array();
1888
1889                 xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
1890                 xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 0);
1891                 xml_parse_into_struct($parser, $string, $vals, $index);
1892
1893                 if (xml_get_error_code($parser))        return 'Line '.xml_get_current_line_number($parser).': '.xml_error_string(xml_get_error_code($parser));
1894                 xml_parser_free($parser);
1895
1896                 $stack = array( array() );
1897                 $stacktop = 0;
1898                 $startPoint=0;
1899
1900 // FIXME don't use unset() - what does that mean? Use NULL or similar.
1901                 unset($tagi);
1902                 foreach($vals as $key => $val) {
1903                         $type = $val['type'];
1904
1905                                 // open tag:
1906                         if ($type=='open' || $type=='complete') {
1907                                 $stack[$stacktop++] = $tagi;
1908
1909                                 if ($depth==$stacktop)  {
1910                                         $startPoint=$key;
1911                                 }
1912
1913                                 $tagi = array('tag' => $val['tag']);
1914
1915                                 if(isset($val['attributes']))  $tagi['attrs'] = $val['attributes'];
1916                                 if(isset($val['value']))        $tagi['values'][] = $val['value'];
1917                         }
1918                                 // finish tag:
1919                         if ($type=='complete' || $type=='close')        {
1920                                 $oldtagi = $tagi;
1921                                 $tagi = $stack[--$stacktop];
1922                                 $oldtag = $oldtagi['tag'];
1923                                 unset($oldtagi['tag']);
1924
1925                                 if ($depth==($stacktop+1))      {
1926                                         if ($key-$startPoint > 0)       {
1927                                                 $partArray = array_slice(
1928                                                         $vals,
1929                                                         $startPoint+1,
1930                                                         $key-$startPoint-1
1931                                                 );
1932                                                 #$oldtagi=array('XMLvalue'=>t3lib_div::xmlRecompileFromStructValArray($partArray));
1933                                                 $oldtagi['XMLvalue']=t3lib_div::xmlRecompileFromStructValArray($partArray);
1934                                         } else {
1935                                                 $oldtagi['XMLvalue']=$oldtagi['values'][0];
1936                                         }
1937                                 }
1938
1939                                 $tagi['ch'][$oldtag][] = $oldtagi;
1940                                 unset($oldtagi);
1941                         }
1942                                 // cdata
1943                         if($type=='cdata') {
1944                                 $tagi['values'][] = $val['value'];
1945                         }
1946                 }
1947                 return $tagi['ch'];
1948         }
1949
1950         /**
1951          * Turns PHP array into XML. See array2xml()
1952          *
1953          * @param       array           The input PHP array with any kind of data; text, binary, integers. Not objects though.
1954          * @param       string          Alternative document tag. Default is "phparray".
1955          * @param       array           Options for the compilation. See array2xml() for description.
1956          * @param       string          Forced charset to prologue
1957          * @return      string          An XML string made from the input content in the array.
1958          * @see xml2array(),array2xml()
1959          */
1960         function array2xml_cs($array,$docTag='phparray',$options=array(),$charset='')   {
1961
1962                         // Figure out charset if not given explicitly:
1963                 if (!$charset)  {
1964                         if ($GLOBALS['TYPO3_CONF_VARS']['BE']['forceCharset'])  {       // First priority: forceCharset! If set, this will be authoritative!
1965                                 $charset = $GLOBALS['TYPO3_CONF_VARS']['BE']['forceCharset'];
1966                         } elseif (is_object($GLOBALS['LANG']))  {
1967                                 $charset = $GLOBALS['LANG']->charSet;   // If "LANG" is around, that will hold the current charset
1968                         } else {
1969                                 $charset = 'iso-8859-1';        // THIS is just a hopeful guess!
1970                         }
1971                 }
1972
1973                         // Return XML:
1974                 return '<?xml version="1.0" encoding="'.htmlspecialchars($charset).'" standalone="yes" ?>'.chr(10).
1975                                 t3lib_div::array2xml($array,'',0,$docTag,0, $options);
1976         }
1977
1978         /**
1979          * Deprecated to call directly (unless you are aware of using XML prologues)! Use "array2xml_cs" instead (which adds an XML-prologue)
1980          *
1981          * Converts a PHP array into an XML string.
1982          * The XML output is optimized for readability since associative keys are used as tagnames.
1983          * This also means that only alphanumeric characters are allowed in the tag names AND only keys NOT starting with numbers (so watch your usage of keys!). However there are options you can set to avoid this problem.
1984          * Numeric keys are stored with the default tagname "numIndex" but can be overridden to other formats)
1985          * The function handles input values from the PHP array in a binary-safe way; All characters below 32 (except 9,10,13) will trigger the content to be converted to a base64-string
1986          * The PHP variable type of the data IS preserved as long as the types are strings, arrays, integers and booleans. Strings are the default type unless the "type" attribute is set.
1987          * The output XML has been tested with the PHP XML-parser and parses OK under all tested circumstances with 4.x versions. However, with PHP5 there seems to be the need to add an XML prologue a la <?xml version="1.0" encoding="[charset]" standalone="yes" ?> - otherwise UTF-8 is assumed! Unfortunately, many times the output from this function is used without adding that prologue meaning that non-ASCII characters will break the parsing!! This suchs of course! Effectively it means that the prologue should always be prepended setting the right characterset, alternatively the system should always run as utf-8!
1988          * However using MSIE to read the XML output didn't always go well: One reason could be that the character encoding is not observed in the PHP data. The other reason may be if the tag-names are invalid in the eyes of MSIE. Also using the namespace feature will make MSIE break parsing. There might be more reasons...
1989          * Usage: 5
1990          *
1991          * @param       array           The input PHP array with any kind of data; text, binary, integers. Not objects though.
1992          * @param       string          tag-prefix, eg. a namespace prefix like "T3:"
1993          * @param       integer         Current recursion level. Don't change, stay at zero!
1994          * @param       string          Alternative document tag. Default is "phparray".
1995          * @param       integer         If greater than zero, then the number of spaces corresponding to this number is used for indenting, if less than zero - no indentation, if zero - a single chr(9) (TAB) is used
1996          * @param       array           Options for the compilation. Key "useNindex" => 0/1 (boolean: whether to use "n0, n1, n2" for num. indexes); Key "useIndexTagForNum" => "[tag for numerical indexes]"; Key "useIndexTagForAssoc" => "[tag for associative indexes"; Key "parentTagMap" => array('parentTag' => 'thisLevelTag')
1997          * @param       string          Stack data. Don't touch.
1998          * @return      string          An XML string made from the input content in the array.
1999          * @see xml2array()
2000          */
2001         function array2xml($array,$NSprefix='',$level=0,$docTag='phparray',$spaceInd=0, $options=array(),$stackData=array())    {
2002                         // The list of byte values which will trigger binary-safe storage. If any value has one of these char values in it, it will be encoded in base64
2003                 $binaryChars = chr(0).chr(1).chr(2).chr(3).chr(4).chr(5).chr(6).chr(7).chr(8).
2004                                                 chr(11).chr(12).chr(14).chr(15).chr(16).chr(17).chr(18).chr(19).
2005                                                 chr(20).chr(21).chr(22).chr(23).chr(24).chr(25).chr(26).chr(27).chr(28).chr(29).
2006                                                 chr(30).chr(31);
2007                         // Set indenting mode:
2008                 $indentChar = $spaceInd ? ' ' : chr(9);
2009                 $indentN = $spaceInd>0 ? $spaceInd : 1;
2010                 $nl = ($spaceInd >= 0 ? chr(10) : '');
2011
2012                         // Init output variable:
2013                 $output='';
2014
2015                         // Traverse the input array
2016                 if (is_array($array))   {
2017                         foreach($array as $k=>$v)       {
2018                                 $attr = '';
2019                                 $tagName = $k;
2020
2021                                         // Construct the tag name.
2022                                 if(isset($options['grandParentTagMap'][$stackData['grandParentTagName'].'/'.$stackData['parentTagName']])) {            // Use tag based on grand-parent + parent tag name
2023                                         $attr.=' index="'.htmlspecialchars($tagName).'"';
2024                                         $tagName = (string)$options['grandParentTagMap'][$stackData['grandParentTagName'].'/'.$stackData['parentTagName']];
2025                                 }elseif(isset($options['parentTagMap'][$stackData['parentTagName'].':_IS_NUM']) && t3lib_div::testInt($tagName)) {              // Use tag based on parent tag name + if current tag is numeric
2026                                         $attr.=' index="'.htmlspecialchars($tagName).'"';
2027                                         $tagName = (string)$options['parentTagMap'][$stackData['parentTagName'].':_IS_NUM'];
2028                                 }elseif(isset($options['parentTagMap'][$stackData['parentTagName'].':'.$tagName])) {            // Use tag based on parent tag name + current tag
2029                                         $attr.=' index="'.htmlspecialchars($tagName).'"';
2030                                         $tagName = (string)$options['parentTagMap'][$stackData['parentTagName'].':'.$tagName];
2031                                 } elseif(isset($options['parentTagMap'][$stackData['parentTagName']])) {                // Use tag based on parent tag name:
2032                                         $attr.=' index="'.htmlspecialchars($tagName).'"';
2033                                         $tagName = (string)$options['parentTagMap'][$stackData['parentTagName']];
2034                                 } elseif (!strcmp(intval($tagName),$tagName))   {       // If integer...;
2035                                         if ($options['useNindex']) {    // If numeric key, prefix "n"
2036                                                 $tagName = 'n'.$tagName;
2037                                         } else {        // Use special tag for num. keys:
2038                                                 $attr.=' index="'.$tagName.'"';
2039                                                 $tagName = $options['useIndexTagForNum'] ? $options['useIndexTagForNum'] : 'numIndex';
2040                                         }
2041                                 } elseif($options['useIndexTagForAssoc']) {             // Use tag for all associative keys:
2042                                         $attr.=' index="'.htmlspecialchars($tagName).'"';
2043                                         $tagName = $options['useIndexTagForAssoc'];
2044                                 }
2045
2046                                         // The tag name is cleaned up so only alphanumeric chars (plus - and _) are in there and not longer than 100 chars either.
2047                                 $tagName = substr(ereg_replace('[^[:alnum:]_-]','',$tagName),0,100);
2048
2049                                         // If the value is an array then we will call this function recursively:
2050                                 if (is_array($v))       {
2051
2052                                                 // Sub elements:
2053                                         if ($options['alt_options'][$stackData['path'].'/'.$tagName])   {
2054                                                 $subOptions = $options['alt_options'][$stackData['path'].'/'.$tagName];
2055                                                 $clearStackPath = $subOptions['clearStackPath'];
2056                                         } else {
2057                                                 $subOptions = $options;
2058                                                 $clearStackPath = FALSE;
2059                                         }
2060
2061                                         $content = $nl .
2062                                                                 t3lib_div::array2xml(
2063                                                                         $v,
2064                                                                         $NSprefix,
2065                                                                         $level+1,
2066                                                                         '',
2067                                                                         $spaceInd,
2068                                                                         $subOptions,
2069                                                                         array(
2070                                                                                 'parentTagName' => $tagName,
2071                                                                                 'grandParentTagName' => $stackData['parentTagName'],
2072                                                                                 'path' => $clearStackPath ? '' : $stackData['path'].'/'.$tagName,
2073                                                                         )
2074                                                                 ).
2075                                                                 ($spaceInd >= 0 ? str_pad('',($level+1)*$indentN,$indentChar) : '');
2076                                         if ((int)$options['disableTypeAttrib']!=2)      {       // Do not set "type = array". Makes prettier XML but means that empty arrays are not restored with xml2array
2077                                                 $attr.=' type="array"';
2078                                         }
2079                                 } else {        // Just a value:
2080
2081                                                 // Look for binary chars:
2082                                         if (strcspn($v,$binaryChars) != strlen($v))     {       // Go for base64 encoding if the initial segment NOT matching any binary char has the same length as the whole string!
2083                                                         // If the value contained binary chars then we base64-encode it an set an attribute to notify this situation:
2084                                                 $content = $nl.chunk_split(base64_encode($v));
2085                                                 $attr.=' base64="1"';
2086                                         } else {
2087                                                         // Otherwise, just htmlspecialchar the stuff:
2088                                                 $content = htmlspecialchars($v);
2089                                                 $dType = gettype($v);
2090                                                 if ($dType!='string' && !$options['disableTypeAttrib']) { $attr.=' type="'.$dType.'"'; }
2091                                         }
2092                                 }
2093
2094                                         // Add the element to the output string:
2095                                 $output.=($spaceInd >= 0 ? str_pad('',($level+1)*$indentN,$indentChar) : '').'<'.$NSprefix.$tagName.$attr.'>'.$content.'</'.$NSprefix.$tagName.'>'.$nl;
2096                         }
2097                 }
2098
2099                         // If we are at the outer-most level, then we finally wrap it all in the document tags and return that as the value:
2100                 if (!$level)    {
2101                         $output =
2102                                 '<'.$docTag.'>'.$nl.
2103                                 $output.
2104                                 '</'.$docTag.'>';
2105                 }
2106
2107                 return $output;
2108         }
2109
2110         /**
2111          * Converts an XML string to a PHP array.
2112          * This is the reverse function of array2xml()
2113          * Usage: 17
2114          *
2115          * @param       string          XML content to convert into an array
2116          * @param       string          The tag-prefix resolve, eg. a namespace like "T3:"
2117          * @param       boolean         If set, the document tag will be set in the key "_DOCUMENT_TAG" of the output array
2118          * @return      mixed           If the parsing had errors, a string with the error message is returned. Otherwise an array with the content.
2119          * @see array2xml()
2120          */
2121         function xml2array($string,$NSprefix='',$reportDocTag=FALSE) {
2122                 global $TYPO3_CONF_VARS;
2123
2124                         // Create parser:
2125                 $parser = xml_parser_create();
2126                 $vals = array();
2127                 $index = array();
2128
2129                 xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
2130                 xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 0);
2131
2132                         //  PHP4 doesn't like Unicode byte order marks (BOM), so we have to check for them
2133                         // The BOM check comes first, so that the PHP5 preg_match() below doesn't have to check for it
2134                 if(substr($string,0,3)=="\xEF\xBB\xBF") {
2135                         xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, 'utf-8');
2136                 }
2137                         // PHP 4.x: output charset is the same as the input charset, charsets are handled transparently if not specified in xml_parser_create()
2138                         // PHP 5.0.0 & 5.0.1: default output charset is ISO-8859-1, only ASCII, ISO-8859-1 and UTF-8 are supported!!!
2139                         // PHP 5.0.2+: default output charset is UTF-8  , only ASCII, ISO-8859-1 and UTF-8 are supported!!!
2140                 elseif ((double)phpversion()>=5)        {
2141                         $match = array();
2142                         preg_match('/^[[:space:]]*<\?xml[^>]*encoding[[:space:]]*=[[:space:]]*"([^"]*)"/',substr($string,0,200),$match);
2143                         $theCharset = $match[1] ? $match[1] : ($TYPO3_CONF_VARS['BE']['forceCharset'] ? $TYPO3_CONF_VARS['BE']['forceCharset'] : 'iso-8859-1');
2144                         xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, $theCharset);  // us-ascii / utf-8 / iso-8859-1
2145                 }
2146
2147                         // Parse content:
2148                 xml_parse_into_struct($parser, $string, $vals, $index);
2149
2150                         // If error, return error message:
2151                 if (xml_get_error_code($parser))        {
2152                         return 'Line '.xml_get_current_line_number($parser).': '.xml_error_string(xml_get_error_code($parser));
2153                 }
2154                 xml_parser_free($parser);
2155
2156                         // Init vars:
2157                 $stack = array(array());
2158                 $stacktop = 0;
2159                 $current=array();
2160                 $tagName = '';
2161                 $documentTag = '';
2162
2163                         // Traverse the parsed XML structure:
2164                 foreach($vals as $key => $val) {
2165
2166                                 // First, process the tag-name (which is used in both cases, whether "complete" or "close")
2167                         $tagName = $val['tag'];
2168                         if (!$documentTag)      $documentTag = $tagName;
2169
2170                                 // Test for name space:
2171                         $tagName = ($NSprefix && substr($tagName,0,strlen($NSprefix))==$NSprefix) ? substr($tagName,strlen($NSprefix)) : $tagName;
2172
2173                                 // Test for numeric tag, encoded on the form "nXXX":
2174                         $testNtag = substr($tagName,1); // Closing tag.
2175                         $tagName = (substr($tagName,0,1)=='n' && !strcmp(intval($testNtag),$testNtag)) ? intval($testNtag) : $tagName;
2176
2177                                 // Test for alternative index value:
2178                         if (strlen($val['attributes']['index']))        { $tagName = $val['attributes']['index']; }
2179
2180                                 // Setting tag-values, manage stack:
2181                         switch($val['type'])    {
2182                                 case 'open':            // If open tag it means there is an array stored in sub-elements. Therefore increase the stackpointer and reset the accumulation array:
2183                                         $current[$tagName] = array();   // Setting blank place holder
2184                                         $stack[$stacktop++] = $current;
2185                                         $current = array();
2186                                 break;
2187                                 case 'close':   // If the tag is "close" then it is an array which is closing and we decrease the stack pointer.
2188                                         $oldCurrent = $current;
2189                                         $current = $stack[--$stacktop];
2190                                         end($current);  // Going to the end of array to get placeholder key, key($current), and fill in array next:
2191                                         $current[key($current)] = $oldCurrent;
2192                                         unset($oldCurrent);
2193                                 break;
2194                                 case 'complete':        // If "complete", then it's a value. If the attribute "base64" is set, then decode the value, otherwise just set it.
2195                                         if ($val['attributes']['base64'])       {
2196                                                 $current[$tagName] = base64_decode($val['value']);
2197                                         } else {
2198                                                 $current[$tagName] = (string)$val['value']; // Had to cast it as a string - otherwise it would be evaluate false if tested with isset()!!
2199
2200                                                         // Cast type:
2201                                                 switch((string)$val['attributes']['type'])      {
2202                                                         case 'integer':
2203                                                                 $current[$tagName] = (integer)$current[$tagName];
2204                                                         break;
2205                                                         case 'double':
2206                                                                 $current[$tagName] = (double)$current[$tagName];
2207                                                         break;
2208                                                         case 'boolean':
2209                                                                 $current[$tagName] = (bool)$current[$tagName];
2210                                                         break;
2211                                                         case 'array':
2212                                                                 $current[$tagName] = array();   // MUST be an empty array since it is processed as a value; Empty arrays would end up here because they would have no tags inside...
2213                                                         break;
2214                                                 }
2215                                         }
2216                                 break;
2217                         }
2218                 }
2219
2220                 if ($reportDocTag)      {
2221                         $current[$tagName]['_DOCUMENT_TAG'] = $documentTag;
2222                 }
2223
2224                         // Finally return the content of the document tag.
2225                 return $current[$tagName];
2226         }
2227
2228         /**
2229          * This implodes an array of XML parts (made with xml_parse_into_struct()) into XML again.
2230          * Usage: 2
2231          *
2232          * @param       array           A array of XML parts, see xml2tree
2233          * @return      string          Re-compiled XML data.
2234          */
2235         function xmlRecompileFromStructValArray($vals)  {
2236                 $XMLcontent='';
2237
2238                 foreach($vals as $val) {
2239                         $type = $val['type'];
2240
2241                                 // open tag:
2242                         if ($type=='open' || $type=='complete') {
2243                                 $XMLcontent.='<'.$val['tag'];
2244                                 if(isset($val['attributes']))  {
2245                                         foreach($val['attributes'] as $k => $v) {
2246                                                 $XMLcontent.=' '.$k.'="'.htmlspecialchars($v).'"';
2247                                         }
2248                                 }
2249                                 if ($type=='complete')  {
2250                                         if(isset($val['value']))        {
2251                                                 $XMLcontent.='>'.htmlspecialchars($val['value']).'</'.$val['tag'].'>';
2252                                         } else $XMLcontent.='/>';
2253                                 } else $XMLcontent.='>';
2254
2255                                 if ($type=='open' && isset($val['value']))      {
2256                                         $XMLcontent.=htmlspecialchars($val['value']);
2257                                 }
2258                         }
2259                                 // finish tag:
2260                         if ($type=='close')     {
2261                                 $XMLcontent.='</'.$val['tag'].'>';
2262                         }
2263                                 // cdata
2264                         if($type=='cdata') {
2265                                 $XMLcontent.=htmlspecialchars($val['value']);
2266                         }
2267                 }
2268
2269                 return $XMLcontent;
2270         }
2271
2272         /**
2273          * Extract the encoding scheme as found in the first line of an XML document (typically)
2274          * Usage: 1
2275          *
2276          * @param       string          XML data
2277          * @return      string          Encoding scheme (lowercase), if found.
2278          */
2279         function xmlGetHeaderAttribs($xmlData)  {
2280                 $xmlHeader = substr(trim($xmlData),0,200);
2281                 $reg=array();
2282                 if (eregi('^<\?xml([^>]*)\?\>',$xmlHeader,$reg))        {
2283                         return t3lib_div::get_tag_attributes($reg[1]);
2284                 }
2285         }
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297         /*************************
2298          *
2299          * FILES FUNCTIONS
2300          *
2301          *************************/
2302
2303         /**
2304          * Reads the file or url $url and returns the content
2305          * If you are having trouble with proxys when reading URLs you can configure your way out of that with settings like $TYPO3_CONF_VARS['SYS']['curlUse'] etc.
2306          * Usage: 83
2307          *
2308          * @param       string          Filepath/URL to read
2309          * @param       integer         Whether the HTTP header should be fetched or not. 0=disable, 1=fetch header+content, 2=fetch header only
2310          * @param       array           HTTP headers to be used in the request
2311          * @return      string          The content from the resource given as input.
2312          */
2313         function getURL($url, $includeHeader = 0, $requestHeaders = false)      {
2314                 $content = false;
2315
2316                         // (Proxy support implemented by Arco <arco@appeltaart.mine.nu>)
2317                 if ($GLOBALS['TYPO3_CONF_VARS']['SYS']['curlUse'] == '1' && preg_match('/^https?:\/\//', $url)) {
2318                                 // External URL without error checking.
2319                         $ch = curl_init();
2320                         if (!$ch)       {
2321                                 return false;
2322                         }
2323
2324                         curl_setopt($ch, CURLOPT_URL, $url);
2325                         curl_setopt($ch, CURLOPT_HEADER, $includeHeader ? 1 : 0);
2326                         curl_setopt($ch, CURLOPT_NOBODY, $includeHeader == 2 ? 1 : 0);
2327                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
2328                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
2329                         curl_setopt($ch, CURLOPT_FAILONERROR, 1);
2330                         if (is_array($requestHeaders))  {
2331                                 curl_setopt($ch, CURLOPT_HTTPHEADER, $requestHeaders);
2332                         }
2333
2334                         if ($GLOBALS['TYPO3_CONF_VARS']['SYS']['curlProxyServer'])      {
2335                                 curl_setopt($ch, CURLOPT_PROXY, $GLOBALS['TYPO3_CONF_VARS']['SYS']['curlProxyServer']);
2336
2337                                         // Not sure if this is needed
2338                                 if ($GLOBALS['TYPO3_CONF_VARS']['SYS']['curlProxyTunnel'])      {
2339                                         curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, $GLOBALS['TYPO3_CONF_VARS']['SYS']['curlProxyTunnel']);
2340                                 }
2341                                 if ($GLOBALS['TYPO3_CONF_VARS']['SYS']['curlProxyUserPass'])    {
2342                                         curl_setopt($ch, CURLOPT_PROXYUSERPWD, $GLOBALS['TYPO3_CONF_VARS']['SYS']['curlProxyUserPass']);
2343                                 }
2344                         }
2345                         $content = curl_exec($ch);
2346                         curl_close($ch);
2347
2348                 } elseif ($includeHeader)       {
2349                         $parsedURL = parse_url($url);
2350                         if (!t3lib_div::inList('ftp,ftps,http,https,gopher,telnet', $parsedURL['scheme']))      {
2351                                 return false;
2352                         }
2353
2354                         $fp = @fsockopen($parsedURL['host'], ($parsedURL['port'] > 0 ? $parsedURL['port'] : 80), $errno, $errstr, 2.0);
2355                         if (!$fp)       {
2356                                 return false;
2357                         }
2358
2359                         $msg = 'GET ' . $parsedURL['path'] .
2360                                         ($parsedURL['query'] ? '?' . $parsedURL['query'] : '') .
2361                                         ' HTTP/1.0' . "\r\n" . 'Host: ' .
2362                                         $parsedURL['host'] . "\r\n\r\n";
2363                         fputs($fp, $msg);
2364                         while (!feof($fp))      {
2365                                 $line = fgets($fp, 2048);
2366                                 $content.= $line;
2367                                 if ($includeHeader == 2 && !strlen(trim($line)))        {
2368                                         break;  // Stop at the first empty line (= end of header)
2369                                 }
2370                         }
2371                         fclose($fp);
2372
2373                 } elseif (is_array($requestHeaders) && function_exists('stream_context_create'))        {
2374
2375                         $ctx = stream_context_create(array(
2376                                                 'http' => array(
2377                                                         'header' => implode("\r\n", $requestHeaders)
2378                                                 )
2379                                         )
2380                                 );
2381
2382                         if (function_exists('file_get_contents') && version_compare(phpversion(), '5.0', '>=')) {
2383                                 $content = @file_get_contents($url, false, $ctx);
2384                         }
2385                         elseif (false !== ($fd = @fopen($url, 'rb', false, $ctx)))      {
2386                                 $content = '';
2387                                 while (!feof($fd))      {
2388                                         $content .= fread($fd, 4096);
2389                                 }
2390                                 fclose($fd);
2391                         }
2392                 }
2393                 elseif (function_exists('file_get_contents'))   {
2394                         $content = @file_get_contents($url);
2395                 }
2396                 elseif (false !== ($fd = @fopen($url, 'rb')))   {
2397                         $content = '';
2398                         while (!feof($fd))      {
2399                                 $content .= fread($fd, 4096);
2400                         }
2401                         fclose($fd);
2402                 }
2403
2404                 return $content;
2405         }
2406
2407         /**
2408          * Writes $content to the file $file
2409          * Usage: 30
2410          *
2411          * @param       string          Filepath to write to
2412          * @param       string          Content to write
2413          * @return      boolean         True if the file was successfully opened and written to.
2414          */
2415         function writeFile($file,$content)      {
2416                 if (!@is_file($file))   $changePermissions = true;
2417
2418                 if ($fd = fopen($file,'wb'))    {
2419                         $res = fwrite($fd,$content);
2420                         fclose($fd);
2421
2422                         if ($res===false)       return false;
2423
2424                         if ($changePermissions) {       // Change the permissions only if the file has just been created
2425                                 t3lib_div::fixPermissions($file);
2426                         }
2427
2428                         return true;
2429                 }
2430
2431                 return false;
2432         }
2433
2434         /**
2435          * Setting file system mode & group ownership of file
2436          *
2437          * @param       string          Filepath of newly created file
2438          * @return      void
2439          */
2440         function fixPermissions($file)  {
2441                 if (@is_file($file) && TYPO3_OS!='WIN') {
2442                         @chmod($file, octdec($GLOBALS['TYPO3_CONF_VARS']['BE']['fileCreateMask']));             // "@" is there because file is not necessarily OWNED by the user
2443                         if($GLOBALS['TYPO3_CONF_VARS']['BE']['createGroup'])    {       // skip this if createGroup is empty
2444                                 @chgrp($file, $GLOBALS['TYPO3_CONF_VARS']['BE']['createGroup']);                // "@" is there because file is not necessarily OWNED by the user
2445                         }
2446                 }
2447         }
2448
2449         /**
2450          * Writes $content to a filename in the typo3temp/ folder (and possibly one or two subfolders...)
2451          * Accepts an additional subdirectory in the file path!
2452          *
2453          * @param       string          Absolute filepath to write to inside "typo3temp/". First part of this string must match PATH_site."typo3temp/"
2454          * @param       string          Content string to write
2455          * @return      string          Returns false on success, otherwise an error string telling about the problem.
2456          */
2457         function writeFileToTypo3tempDir($filepath,$content)    {
2458
2459                         // Parse filepath into directory and basename:
2460                 $fI = pathinfo($filepath);
2461                 $fI['dirname'].= '/';
2462
2463                         // Check parts:
2464                 if (t3lib_div::validPathStr($filepath) && $fI['basename'] && strlen($fI['basename'])<60)        {
2465                         if (defined('PATH_site'))       {
2466                                 $dirName = PATH_site.'typo3temp/';      // Setting main temporary directory name (standard)
2467                                 if (@is_dir($dirName))  {
2468                                         if (t3lib_div::isFirstPartOfStr($fI['dirname'],$dirName))       {
2469
2470                                                         // Checking if the "subdir" is found:
2471                                                 $subdir = substr($fI['dirname'],strlen($dirName));
2472                                                 if ($subdir)    {
2473                                                         if (ereg('^[[:alnum:]_]+\/$',$subdir) || ereg('^[[:alnum:]_]+\/[[:alnum:]_]+\/$',$subdir))      {
2474                                                                 $dirName.= $subdir;
2475                                                                 if (!@is_dir($dirName)) {
2476                                                                         t3lib_div::mkdir_deep(PATH_site.'typo3temp/', $subdir);
2477                                                                 }
2478                                                         } else return 'Subdir, "'.$subdir.'", was NOT on the form "[[:alnum:]_]/" or  "[[:alnum:]_]/[[:alnum:]_]/"';
2479                                                 }
2480                                                         // Checking dir-name again (sub-dir might have been created):
2481                                                 if (@is_dir($dirName))  {
2482                                                         if ($filepath == $dirName.$fI['basename'])      {
2483                                                                 t3lib_div::writeFile($filepath, $content);
2484                                                                 if (!@is_file($filepath))       return 'File not written to disk! Write permission error in filesystem?';
2485                                                         } else return 'Calculated filelocation didn\'t match input $filepath!';
2486                                                 } else return '"'.$dirName.'" is not a directory!';
2487                                         } else return '"'.$fI['dirname'].'" was not within directory PATH_site + "typo3temp/"';
2488                                 } else return 'PATH_site + "typo3temp/" was not a directory!';
2489                         } else return 'PATH_site constant was NOT defined!';
2490                 } else return 'Input filepath "'.$filepath.'" was generally invalid!';
2491         }
2492
2493         /**
2494          * Wrapper function for mkdir, setting folder permissions according to $GLOBALS['TYPO3_CONF_VARS']['BE']['folderCreateMask'] and group ownership according to $GLOBALS['TYPO3_CONF_VARS']['BE']['createGroup']
2495          * Usage: 6
2496          *
2497          * @param       string          Absolute path to folder, see PHP mkdir() function. Removes trailing slash internally.
2498          * @return      boolean         TRUE if @mkdir went well!
2499          */
2500         function mkdir($theNewFolder)   {
2501                 $theNewFolder = preg_replace('|/$|','',$theNewFolder);
2502                 if (mkdir($theNewFolder, octdec($GLOBALS['TYPO3_CONF_VARS']['BE']['folderCreateMask']))){
2503                         chmod($theNewFolder, octdec($GLOBALS['TYPO3_CONF_VARS']['BE']['folderCreateMask'])); //added this line, because the mode at 'mkdir' has a strange behaviour sometimes
2504
2505                         if($GLOBALS['TYPO3_CONF_VARS']['BE']['createGroup'])    {       // skip this if createGroup is empty
2506                                 chgrp($theNewFolder, $GLOBALS['TYPO3_CONF_VARS']['BE']['createGroup']);
2507                         }
2508                         return TRUE;
2509                 }
2510         }
2511
2512         /**
2513          * Creates a directory - including parent directories if necessary - in the file system
2514          *
2515          * @param       string          Base folder. This must exist! Must have trailing slash! Example "/root/typo3site/"
2516          * @param       string          Deep directory to create, eg. "xx/yy/" which creates "/root/typo3site/xx/yy/" if $destination is "/root/typo3site/"
2517          * @return      string          If error, returns error string.
2518          */
2519         function mkdir_deep($destination,$deepDir)      {
2520                 $allParts = t3lib_div::trimExplode('/',$deepDir,1);
2521                 $root = '';
2522                 foreach($allParts as $part)     {
2523                         $root.= $part.'/';
2524                         if (!is_dir($destination.$root))        {
2525                                 t3lib_div::mkdir($destination.$root);
2526                                 if (!@is_dir($destination.$root))       {
2527                                         return 'Error: The directory "'.$destination.$root.'" could not be created...';
2528                                 }
2529                         }
2530                 }
2531         }
2532
2533         /**
2534          * Returns an array with the names of folders in a specific path
2535          * Will return 'error' (string) if there were an error with reading directory content.
2536          * Usage: 11
2537          *
2538          * @param       string          Path to list directories from
2539          * @return      array           Returns an array with the directory entries as values. If no path, the return value is nothing.
2540          */
2541         function get_dirs($path)        {
2542                 if ($path)      {
2543                         $d = @dir($path);
2544                         if (is_object($d))      {
2545                                 while($entry=$d->read()) {
2546                                         if (@is_dir($path.'/'.$entry) && $entry!= '..' && $entry!= '.') {
2547                                             $filearray[]=$entry;
2548                                         }
2549                                 }
2550                                 $d->close();
2551                         } else return 'error';
2552                         return $filearray;
2553                 }
2554         }
2555
2556         /**
2557          * Returns an array with the names of files in a specific path
2558          * Usage: 18
2559          *
2560          * @param       string          $path: Is the path to the file
2561          * @param       string          $extensionList is the comma list of extensions to read only (blank = all)
2562          * @param       boolean         If set, then the path is prepended the filenames. Otherwise only the filenames are returned in the array
2563          * @param       string          $order is sorting: 1= sort alphabetically, 'mtime' = sort by modification time.
2564          * @return      array           Array of the files found
2565          */
2566         function getFilesInDir($path,$extensionList='',$prependPath=0,$order='')        {
2567
2568                         // Initialize variabels:
2569                 $filearray = array();
2570                 $sortarray = array();
2571                 $path = ereg_replace('\/$','',$path);
2572
2573                         // Find files+directories:
2574                 if (@is_dir($path))     {
2575                         $extensionList = strtolower($extensionList);
2576                         $d = dir($path);
2577                         if (is_object($d))      {
2578                                 while($entry=$d->read()) {
2579                                         if (@is_file($path.'/'.$entry)) {
2580                                                 $fI = pathinfo($entry);
2581                                                 $key = md5($path.'/'.$entry);   // Don't change this ever - extensions may depend on the fact that the hash is an md5 of the path! (import/export extension)
2582                                                 if (!$extensionList || t3lib_div::inList($extensionList,strtolower($fI['extension'])))  {
2583                                                     $filearray[$key]=($prependPath?$path.'/':'').$entry;
2584                                                         if ($order=='mtime') {$sortarray[$key]=filemtime($path.'/'.$entry);}
2585                                                                 elseif ($order) {$sortarray[$key]=$entry;}
2586                                                 }
2587                                         }
2588                                 }
2589                                 $d->close();
2590                         } else return 'error opening path: "'.$path.'"';
2591                 }
2592
2593                         // Sort them:
2594                 if ($order) {
2595                         asort($sortarray);
2596                         reset($sortarray);
2597                         $newArr=array();
2598                         while(list($k,$v)=each($sortarray))     {
2599                                 $newArr[$k]=$filearray[$k];
2600                         }
2601                         $filearray=$newArr;
2602                 }
2603
2604                         // Return result
2605                 reset($filearray);
2606                 return $filearray;
2607         }
2608
2609         /**
2610          * Recursively gather all files and folders of a path.
2611          * Usage: 5
2612          *
2613          * @param       array           $fileArr: Empty input array (will have files added to it)
2614          * @param       string          $path: The path to read recursively from (absolute) (include trailing slash!)
2615          * @param       string          $extList: Comma list of file extensions: Only files with extensions in this list (if applicable) will be selected.
2616          * @param       boolean         $regDirs: If set, directories are also included in output.
2617          * @param       integer         $recursivityLevels: The number of levels to dig down...
2618          * @return      array           An array with the found files/directories.
2619          */
2620         function getAllFilesAndFoldersInPath($fileArr,$path,$extList='',$regDirs=0,$recursivityLevels=99)       {
2621                 if ($regDirs)   $fileArr[] = $path;
2622                 $fileArr = array_merge($fileArr, t3lib_div::getFilesInDir($path,$extList,1,1));
2623
2624                 $dirs = t3lib_div::get_dirs($path);
2625                 if (is_array($dirs) && $recursivityLevels>0)    {
2626                         foreach ($dirs as $subdirs)     {
2627                                 if ((string)$subdirs!='')       {
2628                                         $fileArr = t3lib_div::getAllFilesAndFoldersInPath($fileArr,$path.$subdirs.'/',$extList,$regDirs,$recursivityLevels-1);
2629                                 }
2630                         }
2631                 }
2632                 return $fileArr;
2633         }
2634
2635         /**
2636          * Removes the absolute part of all files/folders in fileArr
2637          * Usage: 2
2638          *
2639          * @param       array           $fileArr: The file array to remove the prefix from
2640          * @param       string          $prefixToRemove: The prefix path to remove (if found as first part of string!)
2641          * @return      array           The input $fileArr processed.
2642          */
2643         function removePrefixPathFromList($fileArr,$prefixToRemove)     {
2644                 foreach($fileArr as $k => $absFileRef)  {
2645                         if(t3lib_div::isFirstPartOfStr($absFileRef,$prefixToRemove))    {
2646                                 $fileArr[$k] = substr($absFileRef,strlen($prefixToRemove));
2647                         } else return 'ERROR: One or more of the files was NOT prefixed with the prefix-path!';
2648                 }
2649                 return $fileArr;
2650         }
2651
2652         /**
2653          * Fixes a path for windows-backslashes and reduces double-slashes to single slashes
2654          * Usage: 2
2655          *
2656          * @param       string          File path to process
2657          * @return      string
2658          */
2659         function fixWindowsFilePath($theFile)   {
2660                 return str_replace('//','/', str_replace('\\','/', $theFile));
2661         }
2662
2663         /**
2664          * Resolves "../" sections in the input path string.
2665          * For example "fileadmin/directory/../other_directory/" will be resolved to "fileadmin/other_directory/"
2666          * Usage: 2
2667          *
2668          * @param       string          File path in which "/../" is resolved
2669          * @return      string
2670          */
2671         function resolveBackPath($pathStr)      {
2672                 $parts = explode('/',$pathStr);
2673                 $output=array();
2674                 $c = 0;
2675                 foreach($parts as $pV)  {
2676                         if ($pV=='..')  {
2677                                 if ($c) {
2678                                         array_pop($output);
2679                                         $c--;
2680                                 } else $output[]=$pV;
2681                         } else {
2682                                 $c++;
2683                                 $output[]=$pV;
2684                         }
2685                 }
2686                 return implode('/',$output);
2687         }
2688
2689         /**
2690          * Prefixes a URL used with 'header-location' with 'http://...' depending on whether it has it already.
2691          * - If already having a scheme, nothing is prepended
2692          * - If having REQUEST_URI slash '/', then prefixing 'http://[host]' (relative to host)
2693          * - Otherwise prefixed with TYPO3_REQUEST_DIR (relative to current dir / TYPO3_REQUEST_DIR)
2694          * Usage: 30
2695          *
2696          * @param       string          URL / path to prepend full URL addressing to.
2697          * @return      string
2698          */
2699         function locationHeaderUrl($path)       {
2700                 $uI = parse_url($path);
2701                 if (substr($path,0,1)=='/')     { // relative to HOST
2702                         $path = t3lib_div::getIndpEnv('TYPO3_REQUEST_HOST').$path;
2703                 } elseif (!$uI['scheme'])       { // No scheme either
2704                         $path = t3lib_div::getIndpEnv('TYPO3_REQUEST_DIR').$path;
2705                 }
2706                 return $path;
2707         }
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724         /*************************
2725          *
2726          * DEBUG helper FUNCTIONS
2727          *
2728          *************************/
2729
2730         /**
2731          * Returns a string with a list of ascii-values for the first $characters characters in $string
2732          * Usage: 0
2733          *
2734          * @param       string          String to show ASCII value for
2735          * @param       integer         Number of characters to show
2736          * @return      string          The string with ASCII values in separated by a space char.
2737          * @internal
2738          */
2739         function debug_ordvalue($string,$characters=100)        {
2740                 if(strlen($string) < $characters)       $characters = strlen($string);
2741                 for ($i=0; $i<$characters; $i++)        {
2742                         $valuestring.=' '.ord(substr($string,$i,1));
2743                 }
2744                 return trim($valuestring);
2745         }
2746
2747         /**
2748          * Returns HTML-code, which is a visual representation of a multidimensional array
2749          * use t3lib_div::print_array() in order to print an array
2750          * Returns false if $array_in is not an array
2751          * Usage: 31
2752          *
2753          * @param       array           Array to view
2754          * @return      string          HTML output
2755          */
2756         function view_array($array_in)  {
2757                 if (is_array($array_in))        {
2758                         $result='<table border="1" cellpadding="1" cellspacing="0" bgcolor="white">';
2759                         if (!count($array_in))  {$result.= '<tr><td><font face="Verdana,Arial" size="1"><b>'.htmlspecialchars("EMPTY!").'</b></font></td></tr>';}
2760                         while (list($key,$val)=each($array_in)) {
2761                                 $result.= '<tr><td valign="top"><font face="Verdana,Arial" size="1">'.htmlspecialchars((string)$key).'</font></td><td>';
2762                                 if (is_array($array_in[$key]))  {
2763                                         $result.=t3lib_div::view_array($array_in[$key]);
2764                                 } else
2765                                         $result.= '<font face="Verdana,Arial" size="1" color="red">'.nl2br(htmlspecialchars((string)$val)).'<br /></font>';
2766                                 $result.= '</td></tr>';
2767                         }
2768                         $result.= '</table>';
2769                 } else  {
2770                         $result  = false;
2771                 }
2772                 return $result;
2773         }
2774
2775         /**
2776          * Prints an array
2777          * Usage: 6
2778          *
2779          * @param       array           Array to print visually (in a table).
2780          * @return      void
2781          * @internal
2782          * @see view_array()
2783          */
2784         function print_array($array_in) {
2785                 echo t3lib_div::view_array($array_in);
2786         }
2787
2788         /**
2789          * Makes debug output
2790          * Prints $var in bold between two vertical lines
2791          * If not $var the word 'debug' is printed
2792          * If $var is an array, the array is printed by t3lib_div::print_array()
2793          * Usage: 8
2794          *
2795          * @param       mixed           Variable to print
2796          * @param       mixed           If the parameter is a string it will be used as header. Otherwise number of break tags to apply after (positive integer) or before (negative integer) the output.
2797          * @return      void
2798          */
2799         function debug($var="",$brOrHeader=0)   {
2800                 if ($brOrHeader && !t3lib_div::testInt($brOrHeader))    {
2801                         echo '<table class="typo3-debug" border="0" cellpadding="0" cellspacing="0" bgcolor="white" style="border:0px; margin-top:3px; margin-bottom:3px;"><tr><td style="background-color:#bbbbbb; font-family: verdana,arial; font-weight: bold; font-size: 10px;">'.htmlspecialchars((string)$brOrHeader).'</td></tr><tr><td>';
2802                 } elseif ($brOrHeader<0)        {
2803                         for($a=0;$a<abs(intval($brOrHeader));$a++){echo '<br />';}
2804                 }
2805
2806                 if (is_array($var))     {
2807                         t3lib_div::print_array($var);
2808                 } elseif (is_object($var))      {
2809                         echo '<b>|Object:<pre>';
2810                         print_r($var);
2811                         echo '</pre>|</b>';
2812                 } elseif ((string)$var!='')     {
2813                         echo '<b>|'.htmlspecialchars((string)$var).'|</b>';
2814                 } else {
2815                         echo '<b>| debug |</b>';
2816                 }
2817
2818                 if ($brOrHeader && !t3lib_div::testInt($brOrHeader))    {
2819                         echo '</td></tr></table>';
2820                 } elseif ($brOrHeader>0)        {
2821                         for($a=0;$a<intval($brOrHeader);$a++){echo '<br />';}
2822                 }
2823         }
2824
2825         /**
2826          * Displays the "path" of the function call stack in a string, using debug_backtrace
2827          *
2828          * @return      string
2829          */
2830         function debug_trail()  {
2831                 if (function_exists('debug_backtrace')) {
2832                         $trail = debug_backtrace();
2833                         $trail = array_reverse($trail);
2834                         array_pop($trail);
2835
2836                         $path = array();
2837                         foreach($trail as $dat) {
2838                                 $path[] = $dat['class'].$dat['type'].$dat['function'];
2839                         }
2840
2841                         return implode(' // ',$path);
2842                 } else return 'N/A';
2843         }
2844
2845         /**
2846          * Displays an array as rows in a table. Useful to debug output like an array of database records.
2847          *
2848          * @param       array           Array of arrays with similar keys
2849          * @param       string          Table header
2850          * @return      void            Outputs to browser.
2851          */
2852         function debugRows($rows,$header='')    {
2853                 if (is_array($rows))    {
2854                         reset($rows);
2855                         $firstEl = current($rows);
2856                         if (is_array($firstEl)) {
2857                                 $headerColumns = array_keys($firstEl);
2858                                 $tRows = array();
2859
2860                                         // Header:
2861                                 $tRows[] = '<tr><td colspan="'.count($headerColumns).'" style="background-color:#bbbbbb; font-family: verdana,arial; font-weight: bold; font-size: 10px;"><strong>'.htmlspecialchars($header).'</strong></td></tr>';
2862                                 $tCells = array();
2863                                 foreach($headerColumns as $key) {
2864                                         $tCells[] = '
2865                                                         <td><font face="Verdana,Arial" size="1"><strong>'.htmlspecialchars($key).'</strong></font></td>';
2866                                 }
2867                                 $tRows[] = '
2868                                                 <tr>'.implode('',$tCells).'
2869                                                 </tr>';
2870
2871                                         // Rows:
2872                                 foreach($rows as $singleRow)    {
2873                                         $tCells = array();
2874                                         foreach($headerColumns as $key) {
2875                                                 $tCells[] = '
2876                                                         <td><font face="Verdana,Arial" size="1">'.htmlspecialchars($singleRow[$key]).'</font></td>';
2877                                         }
2878                                         $tRows[] = '
2879                                                 <tr>'.implode('',$tCells).'
2880                                                 </tr>';
2881                                 }
2882
2883                                 $table = '
2884                                         <table border="1" cellpadding="1" cellspacing="0" bgcolor="white">'.implode('',$tRows).'
2885                                         </table>';
2886                                 echo $table;
2887                         } else debug('Empty array of rows',$header);
2888                 } else debug('No array of rows',$header);
2889         }
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918         /*************************
2919          *
2920          * SYSTEM INFORMATION
2921          *
2922          *************************/
2923
2924         /**
2925          * Returns the HOST+DIR-PATH of the current script (The URL, but without 'http://' and without script-filename)
2926          * Usage: 1
2927          *
2928          * @return      string
2929          */
2930         function getThisUrl()   {
2931                 $p=parse_url(t3lib_div::getIndpEnv('TYPO3_REQUEST_SCRIPT'));            // Url of this script
2932                 $dir=t3lib_div::dirname($p['path']).'/';        // Strip file
2933                 $url = str_replace('//','/',$p['host'].($p['port']?':'.$p['port']:'').$dir);
2934                 return $url;
2935         }
2936
2937         /**
2938          * Returns the link-url to the current script.
2939          * In $getParams you can set associative keys corresponding to the GET-vars you wish to add to the URL. If you set them empty, they will remove existing GET-vars from the current URL.
2940          * REMEMBER to always use htmlspecialchars() for content in href-properties to get ampersands converted to entities (XHTML requirement and XSS precaution)
2941          * Usage: 52
2942          *
2943          * @param       array           Array of GET parameters to include
2944          * @return      string
2945          */
2946         function linkThisScript($getParams=array())     {
2947                 $parts = t3lib_div::getIndpEnv('SCRIPT_NAME');
2948                 $params = t3lib_div::_GET();
2949
2950                 foreach($getParams as $k => $v) {
2951                         if (strcmp($v,''))      {
2952                                 $params[$k]=$v;
2953                         } else unset($params[$k]);
2954                 }
2955
2956                 $pString = t3lib_div::implodeArrayForUrl('',$params);
2957
2958                 return $pString ? $parts.'?'.ereg_replace('^&','',$pString) : $parts;
2959         }
2960
2961         /**
2962          * Takes a full URL, $url, possibly with a querystring and overlays the $getParams arrays values onto the quirystring, packs it all together and returns the URL again.
2963          * So basically it adds the parameters in $getParams to an existing URL, $url
2964          * Usage: 2
2965          *
2966          * @param       string          URL string
2967          * @param       array           Array of key/value pairs for get parameters to add/overrule with. Can be multidimensional.
2968          * @return      string          Output URL with added getParams.
2969          */
2970         function linkThisUrl($url,$getParams=array())   {
2971                 $parts = parse_url($url);
2972                 $getP = array();
2973                 if ($parts['query'])    {
2974                         parse_str($parts['query'],$getP);
2975                 }
2976                 $getP = t3lib_div::array_merge_recursive_overrule($getP,$getParams);
2977                 $uP = explode('?',$url);
2978
2979                 $params = t3lib_div::implodeArrayForUrl('',$getP);
2980                 $outurl = $uP[0].($params ? '?'.substr($params, 1) : '');
2981
2982                 return $outurl;
2983         }
2984
2985         /**
2986          * Abstraction method which returns System Environment Variables regardless of server OS, CGI/MODULE version etc. Basically this is SERVER variables for most of them.
2987          * This should be used instead of getEnv() and $_SERVER/ENV_VARS to get reliable values for all situations.
2988          * Usage: 221
2989          *
2990          * @param       string          Name of the "environment variable"/"server variable" you wish to use. Valid values are SCRIPT_NAME, SCRIPT_FILENAME, REQUEST_URI, PATH_INFO, REMOTE_ADDR, REMOTE_HOST, HTTP_REFERER, HTTP_HOST, HTTP_USER_AGENT, HTTP_ACCEPT_LANGUAGE, QUERY_STRING, TYPO3_DOCUMENT_ROOT, TYPO3_HOST_ONLY, TYPO3_HOST_ONLY, TYPO3_REQUEST_HOST, TYPO3_REQUEST_URL, TYPO3_REQUEST_SCRIPT, TYPO3_REQUEST_DIR, TYPO3_SITE_URL, _ARRAY
2991          * @return      string          Value based on the input key, independent of server/os environment.
2992          */
2993         function getIndpEnv($getEnvName)        {
2994                 /*
2995                         Conventions:
2996                         output from parse_url():
2997                         URL:    http://username:password@192.168.1.4:8080/typo3/32/temp/phpcheck/index.php/arg1/arg2/arg3/?arg1,arg2,arg3&p1=parameter1&p2[key]=value#link1
2998                             [scheme] => 'http'
2999                             [user] => 'username'
3000                             [pass] => 'password'
3001                             [host] => '192.168.1.4'
3002                                 [port] => '8080'
3003                             [path] => '/typo3/32/temp/phpcheck/index.php/arg1/arg2/arg3/'
3004                             [query] => 'arg1,arg2,arg3&p1=parameter1&p2[key]=value'
3005                             [fragment] => 'link1'
3006
3007                                 Further definition: [path_script] = '/typo3/32/temp/phpcheck/index.php'
3008                                                                         [path_dir] = '/typo3/32/temp/phpcheck/'
3009                                                                         [path_info] = '/arg1/arg2/arg3/'
3010                                                                         [path] = [path_script/path_dir][path_info]
3011
3012
3013                         Keys supported:
3014
3015                         URI______:
3016                                 REQUEST_URI             =       [path]?[query]          = /typo3/32/temp/phpcheck/index.php/arg1/arg2/arg3/?arg1,arg2,arg3&p1=parameter1&p2[key]=value
3017                                 HTTP_HOST               =       [host][:[port]]         = 192.168.1.4:8080
3018                                 SCRIPT_NAME             =       [path_script]++         = /typo3/32/temp/phpcheck/index.php             // NOTICE THAT SCRIPT_NAME will return the php-script name ALSO. [path_script] may not do that (eg. '/somedir/' may result in SCRIPT_NAME '/somedir/index.php')!
3019                                 PATH_INFO               =       [path_info]                     = /arg1/arg2/arg3/
3020                                 QUERY_STRING    =       [query]                         = arg1,arg2,arg3&p1=parameter1&p2[key]=value
3021                                 HTTP_REFERER    =       [scheme]://[host][:[port]][path]        = http://192.168.1.4:8080/typo3/32/temp/phpcheck/index.php/arg1/arg2/arg3/?arg1,arg2,arg3&p1=parameter1&p2[key]=value
3022                                                                                 (Notice: NO username/password + NO fragment)
3023
3024                         CLIENT____:
3025                                 REMOTE_ADDR             =       (client IP)
3026                                 REMOTE_HOST             =       (client host)
3027                                 HTTP_USER_AGENT =       (client user agent)
3028                                 HTTP_ACCEPT_LANGUAGE    = (client accept language)
3029
3030                         SERVER____:
3031                                 SCRIPT_FILENAME =       Absolute filename of script             (Differs between windows/unix). On windows 'C:\\blabla\\blabl\\' will be converted to 'C:/blabla/blabl/'
3032
3033                         Special extras:
3034                                 TYPO3_HOST_ONLY =               [host] = 192.168.1.4
3035                                 TYPO3_PORT =                    [port] = 8080 (blank if 80, taken from host value)
3036                                 TYPO3_REQUEST_HOST =    [scheme]://[host][:[port]]
3037                                 TYPO3_REQUEST_URL =             [scheme]://[host][:[port]][path]?[query] (scheme will by default be "http" until we can detect something different)
3038                                 TYPO3_REQUEST_SCRIPT =  [scheme]://[host][:[port]][path_script]
3039                                 TYPO3_REQUEST_DIR =             [scheme]://[host][:[port]][path_dir]
3040                                 TYPO3_SITE_URL =                [scheme]://[host][:[port]][path_dir] of the TYPO3 website frontend
3041                                 TYPO3_SITE_SCRIPT =     [script / Speaking URL] of the TYPO3 website
3042                                 TYPO3_DOCUMENT_ROOT =   Absolute path of root of documents: TYPO3_DOCUMENT_ROOT.SCRIPT_NAME = SCRIPT_FILENAME (typically)
3043                                 TYPO3_SSL =                     Returns TRUE if this session uses SSL (HTTPS)
3044
3045                         Notice: [fragment] is apparently NEVER available to the script!
3046
3047
3048                         Testing suggestions:
3049                         - Output all the values.
3050                         - In the script, make a link to the script it self, maybe add some parameters and click the link a few times so HTTP_REFERER is seen
3051                         - ALSO TRY the script from the ROOT of a site (like 'http://www.mytest.com/' and not 'http://www.mytest.com/test/' !!)
3052
3053                 */
3054
3055 #               if ($getEnvName=='HTTP_REFERER')        return '';
3056
3057                 $retVal = '';
3058
3059                 switch ((string)$getEnvName)    {
3060                         case 'SCRIPT_NAME':
3061                                 $retVal = (php_sapi_name()=='cgi'||php_sapi_name()=='cgi-fcgi')&&($_SERVER['ORIG_PATH_INFO']?$_SERVER['ORIG_PATH_INFO']:$_SERVER['PATH_INFO']) ? ($_SERVER['ORIG_PATH_INFO']?$_SERVER['ORIG_PATH_INFO']:$_SERVER['PATH_INFO']) : ($_SERVER['ORIG_SCRIPT_NAME']?$_SERVER['ORIG_SCRIPT_NAME']:$_SERVER['SCRIPT_NAME']);
3062                         break;
3063                         case 'SCRIPT_FILENAME':
3064                                 $retVal = str_replace('//','/', str_replace('\\','/', (php_sapi_name()=='cgi'||php_sapi_name()=='isapi' ||php_sapi_name()=='cgi-fcgi')&&($_SERVER['ORIG_PATH_TRANSLATED']?$_SERVER['ORIG_PATH_TRANSLATED']:$_SERVER['PATH_TRANSLATED'])? ($_SERVER['ORIG_PATH_TRANSLATED']?$_SERVER['ORIG_PATH_TRANSLATED']:$_SERVER['PATH_TRANSLATED']):($_SERVER['ORIG_SCRIPT_FILENAME']?$_SERVER['ORIG_SCRIPT_FILENAME']:$_SERVER['SCRIPT_FILENAME'])));
3065                         break;
3066                         case 'REQUEST_URI':
3067                                         // Typical application of REQUEST_URI is return urls, forms submitting to itself etc. Example: returnUrl='.rawurlencode(t3lib_div::getIndpEnv('REQUEST_URI'))
3068                                 if (!$_SERVER['REQUEST_URI'])   {       // This is for ISS/CGI which does not have the REQUEST_URI available.
3069                                         $retVal = '/'.ereg_replace('^/','',t3lib_div::getIndpEnv('SCRIPT_NAME')).
3070                                                 ($_SERVER['QUERY_STRING']?'?'.$_SERVER['QUERY_STRING']:'');
3071                                 } else $retVal = $_SERVER['REQUEST_URI'];
3072                         break;
3073                         case 'PATH_INFO':
3074                                         // $_SERVER['PATH_INFO']!=$_SERVER['SCRIPT_NAME'] is necessary because some servers (Windows/CGI) are seen to set PATH_INFO equal to script_name
3075                                         // Further, there must be at least one '/' in the path - else the PATH_INFO value does not make sense.
3076                                         // IF 'PATH_INFO' never works for our purpose in TYPO3 with CGI-servers, then 'php_sapi_name()=='cgi'' might be a better check. Right now strcmp($_SERVER['PATH_INFO'],t3lib_div::getIndpEnv('SCRIPT_NAME')) will always return false for CGI-versions, but that is only as long as SCRIPT_NAME is set equal to PATH_INFO because of php_sapi_name()=='cgi' (see above)
3077 //                              if (strcmp($_SERVER['PATH_INFO'],t3lib_div::getIndpEnv('SCRIPT_NAME')) && count(explode('/',$_SERVER['PATH_INFO']))>1)  {
3078                                 if (php_sapi_name()!='cgi'&&php_sapi_name()!='cgi-fcgi')        {
3079                                         $retVal = $_SERVER['PATH_INFO'];
3080                                 }
3081                         break;
3082                                 // These are let through without modification
3083                         case 'REMOTE_ADDR':
3084                         case 'REMOTE_HOST':
3085                         case 'HTTP_REFERER':
3086                         case 'HTTP_HOST':
3087                         case 'HTTP_USER_AGENT':
3088                         case 'HTTP_ACCEPT_LANGUAGE':
3089                         case 'QUERY_STRING':
3090                                 $retVal = $_SERVER[$getEnvName];
3091                         break;
3092                         case 'TYPO3_DOCUMENT_ROOT':
3093                                 // Some CGI-versions (LA13CGI) and mod-rewrite rules on MODULE versions will deliver a 'wrong' DOCUMENT_ROOT (according to our description). Further various aliases/mod_rewrite rules can disturb this as well.
3094                                 // Therefore the DOCUMENT_ROOT is now always calculated as the SCRIPT_FILENAME minus the end part shared with SCRIPT_NAME.
3095                                 $SFN = t3lib_div::getIndpEnv('SCRIPT_FILENAME');
3096                                 $SN_A = explode('/',strrev(t3lib_div::getIndpEnv('SCRIPT_NAME')));
3097                                 $SFN_A = explode('/',strrev($SFN));
3098                                 $acc = array();
3099                                 while(list($kk,$vv)=each($SN_A))        {
3100                                         if (!strcmp($SFN_A[$kk],$vv))   {
3101                                                 $acc[] = $vv;
3102                                         } else break;
3103                                 }
3104                                 $commonEnd=strrev(implode('/',$acc));
3105                                 if (strcmp($commonEnd,''))      { $DR = substr($SFN,0,-(strlen($commonEnd)+1)); }
3106                                 $retVal = $DR;
3107                         break;
3108                         case 'TYPO3_HOST_ONLY':
3109                                 $p = explode(':',$_SERVER['HTTP_HOST']);
3110                                 $retVal = $p[0];
3111                         break;
3112                         case 'TYPO3_PORT':
3113                                 $p = explode(':',$_SERVER['HTTP_HOST']);
3114                                 $retVal = $p[1];
3115                         break;
3116                         case 'TYPO3_REQUEST_HOST':
3117                                 $retVal = (t3lib_div::getIndpEnv('TYPO3_SSL') ? 'https://' : 'http://').
3118                                         $_SERVER['HTTP_HOST'];
3119                         break;
3120                         case 'TYPO3_REQUEST_URL':
3121                                 $retVal = t3lib_div::getIndpEnv('TYPO3_REQUEST_HOST').t3lib_div::getIndpEnv('REQUEST_URI');
3122                         break;
3123                         case 'TYPO3_REQUEST_SCRIPT':
3124                                 $retVal = t3lib_div::getIndpEnv('TYPO3_REQUEST_HOST').t3lib_div::getIndpEnv('SCRIPT_NAME');
3125                         break;
3126                         case 'TYPO3_REQUEST_DIR':
3127                                 $retVal = t3lib_div::getIndpEnv('TYPO3_REQUEST_HOST').t3lib_div::dirname(t3lib_div::getIndpEnv('SCRIPT_NAME')).'/';
3128                         break;
3129                         case 'TYPO3_SITE_URL':
3130                                 if (defined('PATH_thisScript') && defined('PATH_site')) {
3131                                         $lPath = substr(dirname(PATH_thisScript),strlen(PATH_site)).'/';
3132                                         $url = t3lib_div::getIndpEnv('TYPO3_REQUEST_DIR');
3133                                         $siteUrl = substr($url,0,-strlen($lPath));
3134                                         if (substr($siteUrl,-1)!='/')   $siteUrl.='/';
3135                                         $retVal = $siteUrl;
3136                                 }
3137                         break;
3138                         case 'TYPO3_SITE_SCRIPT':
3139                                 $retVal = substr(t3lib_div::getIndpEnv('TYPO3_REQUEST_URL'),strlen(t3lib_div::getIndpEnv('TYPO3_SITE_URL')));
3140                         break;
3141                         case 'TYPO3_SSL':
3142                                 $retVal = $_SERVER['SSL_SESSION_ID'] || !strcmp($_SERVER['HTTPS'],'on') || !strcmp($_SERVER['HTTPS'],'1') ? TRUE : FALSE;       // see http://bugs.typo3.org/view.php?id=3909
3143                         break;
3144                         case '_ARRAY':
3145                                 $out = array();
3146                                         // Here, list ALL possible keys to this function for debug display.
3147                                 $envTestVars = t3lib_div::trimExplode(',','
3148                                         HTTP_HOST,
3149                                         TYPO3_HOST_ONLY,
3150                                         TYPO3_PORT,
3151                                         PATH_INFO,
3152                                         QUERY_STRING,
3153                                         REQUEST_URI,
3154                                         HTTP_REFERER,
3155                                         TYPO3_REQUEST_HOST,
3156                                         TYPO3_REQUEST_URL,
3157                                         TYPO3_REQUEST_SCRIPT,
3158                                         TYPO3_REQUEST_DIR,
3159                                         TYPO3_SITE_URL,
3160                                         TYPO3_SITE_SCRIPT,
3161                                         TYPO3_SSL,
3162                                         SCRIPT_NAME,
3163                                         TYPO3_DOCUMENT_ROOT,
3164                                         SCRIPT_FILENAME,
3165                                         REMOTE_ADDR,
3166                                         REMOTE_HOST,
3167                                         HTTP_USER_AGENT,
3168                                         HTTP_ACCEPT_LANGUAGE',1);
3169                                 reset($envTestVars);
3170                                 while(list(,$v)=each($envTestVars))     {
3171                                         $out[$v]=t3lib_div::getIndpEnv($v);
3172                                 }
3173                                 reset($out);
3174                                 $retVal = $out;
3175                         break;
3176                 }
3177                 return $retVal;
3178         }
3179
3180         /**
3181          * milliseconds
3182          * microtime recalculated to t3lib_div::milliseconds(1/1000 sec)
3183          * Usage: 20
3184          *
3185          * @return      integer
3186          */
3187         function milliseconds() {
3188                 $p=explode(' ',microtime());
3189                 return round(($p[0]+$p[1])*1000);
3190         }
3191
3192         /**
3193          * Client Browser Information
3194          * Usage: 4
3195          *
3196          * @param       string          Alternative User Agent string (if empty, t3lib_div::getIndpEnv('HTTP_USER_AGENT') is used)
3197          * @return      array           Parsed information about the HTTP_USER_AGENT in categories BROWSER, VERSION, SYSTEM and FORMSTYLE
3198          */
3199         function clientInfo($useragent='')      {
3200                 if (!$useragent) $useragent=t3lib_div::getIndpEnv('HTTP_USER_AGENT');
3201
3202                 $bInfo=array();
3203                         // Which browser?
3204                 if (strstr($useragent,'Konqueror'))     {
3205                         $bInfo['BROWSER']= 'konqu';
3206                 } elseif (strstr($useragent,'Opera'))   {
3207                         $bInfo['BROWSER']= 'opera';
3208                 } elseif (strstr($useragent,'MSIE 4') || strstr($useragent,'MSIE 5') || strstr($useragent,'MSIE 6') || strstr($useragent,'MSIE 7'))     {
3209                         $bInfo['BROWSER']= 'msie';
3210                 } elseif (strstr($useragent,'Mozilla/4') || strstr($useragent,'Mozilla/5'))     {
3211                         $bInfo['BROWSER']='net';
3212                 }
3213                 if ($bInfo['BROWSER'])  {
3214                                 // Browser version
3215                         switch($bInfo['BROWSER'])       {
3216                                 case 'net':
3217                                         $bInfo['VERSION']= doubleval(substr($useragent,8));
3218                                         if (strstr($useragent,'Netscape6/')) {$bInfo['VERSION']=doubleval(substr(strstr($useragent,'Netscape6/'),10));}
3219                                         if (strstr($useragent,'Netscape/7')) {$bInfo['VERSION']=doubleval(substr(strstr($useragent,'Netscape/7'),9));}
3220                                 break;
3221                                 case 'msie':
3222                                         $tmp = strstr($useragent,'MSIE');
3223                                         $bInfo['VERSION'] = doubleval(ereg_replace('^[^0-9]*','',substr($tmp,4)));
3224                                 break;
3225                                 case 'opera':
3226                                         $tmp = strstr($useragent,'Opera');
3227                                         $bInfo['VERSION'] = doubleval(ereg_replace('^[^0-9]*','',substr($tmp,5)));
3228                                 break;
3229                                 case 'konqu':
3230                                         $tmp = strstr($useragent,'Konqueror/');
3231                                         $bInfo['VERSION'] = doubleval(substr($tmp,10));
3232                                 break;
3233                         }
3234                                 // Client system
3235                         if (strstr($useragent,'Win'))   {
3236                                 $bInfo['SYSTEM'] = 'win';
3237                         } elseif (strstr($useragent,'Mac'))     {
3238                                 $bInfo['SYSTEM'] = 'mac';
3239                         } elseif (strstr($useragent,'Linux') || strstr($useragent,'X11') || strstr($useragent,'SGI') || strstr($useragent,' SunOS ') || strstr($useragen