#36997 [Opn->Bgs]: array_map() fails when array is passed to callback function by reference

ID: 36997 Updated by: bjori@php.net Reported By: o dot veujoz at free dot fr -Status: Open +Status: Bogus Bug Type: Arrays related Operating System: Windows PHP Version: 5.1.2 New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php function callback(&$val) { if(!is_array($val)) { $val = 'new value'; return $val; } else { $ret = array_map('callback', $val); return $ret; } } $arr = array(0 => array ('TEST' => 'foo')); $arr = array_map('callback', $arr); print_r($arr); Previous Comments: ------------------------------------------------------------------------ [2006-04-06 15:21:03] o dot veujoz at free dot fr Description: ------------ Problem with array_map() function : With php 5.0.4, when we pass an array to callback function by reference, the function modifies its arguments. It is not the case with php 5.1.2. I read the bug number 33940 where "Dmitry" wrote : "To make array_map() work as you expected you should pass arrays by reference directly." So there is apparently a solution. I did try a lot of changes in my script but no one works as expected. For example, the code below works fine in PHP 5.1.2 but an error is generated in PHP 5.0.4 : array_map('callback', &$arr); The only way to make the script works on both PHP versions has been consisting in not using the parameters passed by reference (it does not correspond to the original problem). $arr = array_map('callback', $arr); Is it really a bug or is my code bad ? Note: the allow_call_time_pass_reference has been turned off in both PHP versions. Reproduce code: --------------- function callback(&$val) { $val['TEST'] = 'new value'; } $arr = array(0 => array ('TEST' => 'foo')); array_map('callback', $arr); print_r($arr); Expected result: ---------------- Array ( [0] => Array ( [TEST] => new value ) ) Actual result: -------------- Array ( [0] => Array ( [TEST] => foo ) ) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=36997&edit=1