#29253 [Ver]: array_diff with $GLOBALS argument fails apache.(zend optimizer running)

ID: 29253 Updated by: dmitry@php.net Reported By: camka at email dot ee Status: Verified Bug Type: Arrays related Operating System: * PHP Version: 5CVS, 4CVS (2004-08-01) New Comment: Fixed in CVS HEAD (6.0), PHP_5_1, PHP_5_0 and PHP_4_4. Previous Comments: ------------------------------------------------------------------------ [2004-08-07 13:42:32] andrey@php.net To my knowledge array_diff* do not unset anything. I confirm the behaviour under 5.1.0-dev (of 7.Aug.2004) as well as with 4.2.3 (so this problem exists also in the old implementation of the function). The problem appears when only $GLOBALS is used, and the latter is a variable (array) with specific behaviour. Unfortunately I wasn't able to reproduce similar problem with one of the other array functions. ------------------------------------------------------------------------ [2004-07-20 14:40:32] camka at email dot ee last win snapshot <?php error_reporting(E_ALL); $zz = $GLOBALS; $ff = 'ff'; array_diff_assoc($GLOBALS, $zz); var_dump($zz); // this line crashes apache when optimizer is running ?> when optimizer is disabled gives the following notice message and doesn't crash Notice: Undefined variable: zz in c:\wwwww\test\crashme.php on line 7 NULL seems like array_diff parameters are being unset inside the function ------------------------------------------------------------------------ [2004-07-19 09:58:31] camka at email dot ee Description: ------------ when using array_diff with one of the parameters is $GLOBALS seems like the whole variable scope is messed up. Reproduce code: --------------- <?php $zz = $GLOBALS; $gg = 'afad'; var_dump(array_diff_assoc($GLOBALS, $zz)); echo $gg; // strange behavour. $gg is like an array!!! // var_dump($gg); // this call fails apache ?> Expected result: ---------------- expect seeing 'afad' and empty array; Actual result: -------------- array(0) { } Arra the length of "Arra" string depends on the length of $gg length; if uncomment the last line - apache child fails [Mon Jul 19 10:26:00 2004] [notice] child pid 10946 exit signal Segmentation fault (11 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=29253&edit=1