Bug #69784 [Opn]: bad variable reference

Edit report at https://bugs.php.net/bug.php?id=69784&edit=1 ID: 69784 User updated by: artur at salonstron dot pl Reported by: artur at salonstron dot pl Summary: bad variable reference Status: Open Type: Bug Package: Variables related Operating System: irrelevant PHP Version: 5.6.9 Block user comment: N Private report: N New Comment: Currently I'm using: PHP Version 5.5.11 on windows. On most of my clients servers php version is 5.2-5.5. Recently, one of the servers has been updated to version 5.6.9 and the difference is just there. See this example: http://phpbug.studiostron.eu/ its output of the same script + phpversion() Previous Comments: ------------------------------------------------------------------------ [2015-06-10 09:49:56] nikic@php.net According to http://3v4l.org/L8GsZ this behavior has stayed the same for all PHP versions - apart from a short regression interval in PHP 7. Are you sure the code you tested on older versions wasn't in some way different? ------------------------------------------------------------------------ [2015-06-10 09:43:54] artur at salonstron dot pl in previous versions of php script worked differently. The variable $d was assigned to different array with unmodified IAP. It seems to me that it is a a bug because if I wanted to return a reference to the array, which is inside a function test() I would done it differently. Sorry for my english, I hope that everybody understands what I mean. ------------------------------------------------------------------------ [2015-06-10 09:21:32] nikic@php.net Sorry, I'm not sure I see what the issue is here. In test() you're modifying the internal array pointer (IAP) of $a and then returning $a (including the modified IAP). Then in the main script you assign this to $d (still with modified IAP that is at the end of the array) and try to iterate further with it - which fails. Isn't this how it is supposed to work? ------------------------------------------------------------------------ [2015-06-09 11:25:57] artur at salonstron dot pl Description: ------------ In the example below, the variable $d is assigned a reference to a local variable $a (in function test) despite the fact that variable was not returns by reference. To fix this, you must either before returning the $a use the reset(), or inside test() use another variable. Test script: --------------- <?php $a = array ( 1=>"a", 2=>"b", 3=>"c" ); $d = test($a); echo "d:<br />"; while(list($key, $val)=each($d)) { echo $val." "; } function test($a) { while(list($key, $val)=each($a)) { $a[$key] = $val . "t3"; } return $a; } Expected result: ---------------- d: at3 bt3 ct3 Actual result: -------------- d: ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=69784&edit=1