ID: 48404 Updated by: [email protected] Reported By: praxodas at gmail dot com -Status: Open +Status: Bogus Bug Type: Scripting Engine problem Operating System: linux PHP Version: 5.2.9 New Comment:
RTFM: Reference of a $value and the last array element remain even after the foreach loop. It is recommended to destroy it by unset(). Mentioned in the fine manual at: http://php.net/foreach Previous Comments: ------------------------------------------------------------------------ [2009-05-27 10:29:46] praxodas at gmail dot com Description: ------------ After reversing an array and passing it by reference in foreach and then doing array_reverse on itself, passing the same array by value in another foreach overwrites previous array elements with the last one. If a copy of an array is made, the copy is overwritten as well. A workaround would be to pass the array by reference in the next foreach loop. Reproduce code: --------------- <?php $demo_array=array(array('val1'=>'apple', 'ord_num'=>2),array('val2'=>'orange', 'ord_num'=>3)); $demo_array=array_reverse($demo_array); foreach ($demo_array as $key=>&$el) { $el['ord_num']=$key; } $demo_array=array_reverse($demo_array); $new_array=$demo_array; foreach ($demo_array as $k=>$el) { // do nothing,.. } echo "\r\nnew_array:\r\n"; print_r($new_array); echo "\r\ndemo_array:\r\n"; print_r($demo_array); ?> Expected result: ---------------- new_array: Array ( [0] => Array ( [val1] => apple [ord_num] => 1 ) [1] => Array ( [val2] => orange [ord_num] => 0 ) ) demo_array: Array ( [0] => Array ( [val1] => apple [ord_num] => 1 ) [1] => Array ( [val2] => orange [ord_num] => 0 ) ) Actual result: -------------- new_array: Array ( [0] => Array ( [val2] => orange [ord_num] => 0 ) [1] => Array ( [val2] => orange [ord_num] => 0 ) ) demo_array: Array ( [0] => Array ( [val2] => orange [ord_num] => 0 ) [1] => Array ( [val2] => orange [ord_num] => 0 ) ) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=48404&edit=1
