Edit report at https://bugs.php.net/bug.php?id=64005&edit=1
ID: 64005 Updated by: google...@php.net Reported by: youri dot essa at gmail dot com Summary: array_merge memorry issues. -Status: Open +Status: Not a bug Type: Bug Package: Arrays related Operating System: Linux PHP Version: 5.4.10 Block user comment: N Private report: N New Comment: This is not a bug, but a simple mistake of using references in foreach. Pelase see http://php.net/references and http://php.net/foreach for more details. Particularly the red warning box at the bottom of the page at php.net/foreach where it states "Reference of a $value and the last array element remain even after the foreach loop. It is recommended to destroy it by unset()." Previous Comments: ------------------------------------------------------------------------ [2013-01-16 10:10:56] youri dot essa at gmail dot com Description: ------------ --- >From manual page: >http://www.php.net/function.array-merge#refsect1-function.array- merge-description --- Test script: --------------- foreach($cols as $key => &$value) { if(array_key_exists($key, $fields)) { $value = array_merge($fields[$key], $value); } } foreach($fields as $key => $value) { if(!array_key_exists($key, $cols)) { $cols[$key] = $value; } } Expected result: ---------------- Expected result is that col becomes is an array with all the values that where already defined added with the values from fields. Actual result: -------------- The sub-array in cols wich was merged with the same sub-array in fields becomes overwritten everytime the next foreach statement accesses the value $value, witch result. the fix for this is to have a diffrent name for the array merging, this leads me to belive that array_merge keeps re-evaluating the values. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=64005&edit=1
