Bug #62264 [Com]: array_walk not changeing keys

Edit report at https://bugs.php.net/bug.php?id=62264&edit=1 ID: 62264 Comment by: Sjon at hortensius dot net Reported by: marti dot markov at gmail dot com Summary: array_walk not changeing keys Status: Open Type: Bug Package: Arrays related Operating System: Mac OS X PHP Version: master-Git-2012-06-08 (Git) Block user comment: N Private report: N New Comment: The manual says "Only the values of the array may potentially be changed; .... If the callback does not respect this requirement, the behavior of this function is undefined, and unpredictable." I think this could be a feature request, but not really a bug? Also, your test-script is incomplete; but PHP's behavious is pretty consistent regarding this functionality: http://3v4l.org/1dn4f Previous Comments: ------------------------------------------------------------------------ [2012-06-08 09:32:25] marti dot markov at gmail dot com Description: ------------ I have found this problem with 5.3.10 and got the latest GIT head revision and the problem was still there. When I try and change the value of the key it will not update it in the array, even though that I use the key as a reference. Test script: --------------- $array = ( 'a' => 'Hello', 'b' => 'World'); array_walk($array, 'adda'); function adda(&$value, &$key) { $key = "a".$key; } Expected result: ---------------- $array = ( 'aa' => 'Hello', 'ab' => 'World'); Actual result: -------------- $array = ( 'a' => 'Hello', 'b' => 'World'); ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=62264&edit=1