From e2c0c144c419d50f10bef2d54f642e0102ca87bb Mon Sep 17 00:00:00 2001
From: Wouter Wolters <typo3@wouterwolters.nl>
Date: Wed, 20 Jan 2016 21:12:09 +0100
Subject: [PATCH] [BUGFIX] Prevent PHP error in DatabaseTreeDataProvider
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Check if $records is not empty before using in the foreach loop.

Resolves: #72850
Releases: master,7.6
Change-Id: I015087777117a2a355532ecf8204c0e08338e77c
Reviewed-on: https://review.typo3.org/46117
Reviewed-by: Richard Haeser <richardhaeser@gmail.com>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>
Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Reviewed-by: Frank Nägler <frank.naegler@typo3.org>
Tested-by: Frank Nägler <frank.naegler@typo3.org>
---
 .../Tree/TableConfiguration/DatabaseTreeDataProvider.php    | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/typo3/sysext/core/Classes/Tree/TableConfiguration/DatabaseTreeDataProvider.php b/typo3/sysext/core/Classes/Tree/TableConfiguration/DatabaseTreeDataProvider.php
index eb642bb4f527..b3bc30ec2395 100644
--- a/typo3/sysext/core/Classes/Tree/TableConfiguration/DatabaseTreeDataProvider.php
+++ b/typo3/sysext/core/Classes/Tree/TableConfiguration/DatabaseTreeDataProvider.php
@@ -454,8 +454,10 @@ class DatabaseTreeDataProvider extends AbstractTableConfigurationTreeDataProvide
     {
         $records = $GLOBALS['TYPO3_DB']->exec_SELECTgetRows('uid', $this->getTableName(), $GLOBALS['TYPO3_DB']->listQuery($fieldName, (int)$queryId, $this->getTableName()) . ((int)$queryId === 0 ? ' OR CAST(' . $fieldName . ' AS CHAR) = \'\'' : ''));
         $uidArray = array();
-        foreach ($records as $record) {
-            $uidArray[] = $record['uid'];
+        if (!empty($records)) {
+            foreach ($records as $record) {
+                $uidArray[] = $record['uid'];
+            }
         }
         return $uidArray;
     }
-- 
2.20.1