Bug #54189 [Opn->Bgs]: foreach changes array values after iterating by reference followed by foreach

Edit report at http://bugs.php.net/bug.php?id=54189&edit=1 ID: 54189 Updated by: scottmac@php.net Reported by: phazei at gmail dot com Summary: foreach changes array values after iterating by reference followed by foreach -Status: Open +Status: Bogus Type: Bug Package: Scripting Engine problem Operating System: RHEL 5.6 PHP Version: 5.2.17 Block user comment: N Private report: N New Comment: This is on the foreach manual page. Between the two foreach loops, $value is a reference to the last entry in the array. When the second loop starts you then start assigning new values to $value which reference the last element of the array. Previous Comments: ------------------------------------------------------------------------ [2011-03-08 08:11:41] phazei at gmail dot com Description: ------------ (I searched through the bug reports and found some foreach pointer issues, but none related to this) If I simply go through an array with a referenced value like so: foreach ($array as &$value) { } And then go through it again, not referenced, like so: foreach ($array as $value) { } Both times using the same variable $value, then during the second foreach, the second to the last value is actually copied over the last value changing the array. If I simply use $value2 there is no issue. Test script: --------------- $array = array('aaaaa','bbbbb','ccccc','ddddd','eeeee'); echo '1) '.print_r($array, true).'<br>'; foreach ($array as &$value) { } echo '2) '.print_r($array, true).'<br> 3) '; foreach ($array as $key => $value) { echo "[$key] => $value "; } echo '<br> 4) '.print_r($array, true).'<br>'; Expected result: ---------------- 1) Array ( [0] => aaaaa [1] => bbbbb [2] => ccccc [3] => ddddd [4] => eeeee ) 2) Array ( [0] => aaaaa [1] => bbbbb [2] => ccccc [3] => ddddd [4] => eeeee ) 3) [0] => aaaaa [1] => bbbbb [2] => ccccc [3] => ddddd [4] => eeeee 4) Array ( [0] => aaaaa [1] => bbbbb [2] => ccccc [3] => ddddd [4] => eeeee ) Actual result: -------------- 1) Array ( [0] => aaaaa [1] => bbbbb [2] => ccccc [3] => ddddd [4] => eeeee ) 2) Array ( [0] => aaaaa [1] => bbbbb [2] => ccccc [3] => ddddd [4] => eeeee ) 3) [0] => aaaaa [1] => bbbbb [2] => ccccc [3] => ddddd [4] => ddddd 4) Array ( [0] => aaaaa [1] => bbbbb [2] => ccccc [3] => ddddd [4] => ddddd ) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=54189&edit=1