Bug #73261 [NEW]: Looping through array with pointer inadvertently breaks array.

From: randy at larsongroup dot org Operating system: Tested on OSX and Ubuntu 12.04 PHP version: 5.6.26 Package: Arrays related Bug Type: Bug Bug description:Looping through array with pointer inadvertently breaks array. Description: ------------ When you loop through an array with foreach and set the value as a pointer to the array value then the last element in the array will be set as a pointer to the second to last element of the array. Then if you loop through the array a second time you will see that the last value isn't there, but points to the second to last value. Test script: --------------- <?php $originalArray = array('Thor', 'The Hulk', 'Iron Man'); var_dump($originalArray); foreach ($originalArray as &$value) { echo $value."\n"; } echo "\nSecond time through loop\n"; foreach ($originalArray as $value) { echo $value."\n"; } // notice the last element is a pointer which it shouldn't be. echo "\n".var_dump($originalArray); Expected result: ---------------- array(3) { [0]=> string(4) "Thor" [1]=> string(8) "The Hulk" [2]=> string(8) "Iron Man" } Thor The Hulk Iron Man Second time through loop Thor The Hulk Iron Man array(3) { [0]=> string(4) "Thor" [1]=> string(8) "The Hulk" [2]=> string(8) "Iron Man" } Actual result: -------------- array(3) { [0]=> string(4) "Thor" [1]=> string(8) "The Hulk" [2]=> string(8) "Iron Man" } Thor The Hulk Iron Man Second time through loop Thor The Hulk The Hulk array(3) { [0]=> string(4) "Thor" [1]=> string(8) "The Hulk" [2]=> &string(8) "The Hulk" } -- Edit bug report at https://bugs.php.net/bug.php?id=73261&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73261&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73261&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73261&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73261&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73261&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73261&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73261&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73261&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73261&r=support Expected behavior: https://bugs.php.net/fix.php?id=73261&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73261&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73261&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73261&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73261&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73261&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73261&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73261&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73261&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73261&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73261&r=mysqlcfg