Edit report at https://bugs.php.net/bug.php?id=62135&edit=1
ID: 62135 User updated by: Sjon at hortensius dot net Reported by: Sjon at hortensius dot net Summary: Closure->bindTo plus $this reassign = corruption Status: Not a bug Type: Bug Package: Scripting Engine problem Operating System: ArchLinux PHP Version: 5.4.3 Block user comment: N Private report: N New Comment: Ah, too bad; I should have tested that. Thanks for your explanation! Previous Comments: ------------------------------------------------------------------------ [2012-05-24 10:02:50] johan...@php.net 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 With the "can not reassign $this" message we try to prevent mistakes. For performance and architecture reasons we can't prevent all ways one can shoot in one own's foot though. your behavior also isn't closure related: class A { public$a = "public"; function __construct() { $x =& $this; $x = new stdClass; var_dump($this, $this->a); } } new A(); will show the same result. The difference between $this and $this->a comes from the fact that $this is some magic variable. ------------------------------------------------------------------------ [2012-05-24 09:25:58] Sjon at hortensius dot net Description: ------------ I just found the bindTo method on a Closure, a started to play with it. I found out I can get some serieusly strange behaviour by re-assigning $this. Somehow I end up with one variable pointing to different objects? Test script: --------------- From: http://3v4l.org/bp598#v540 <?php class A { public $a = 'public'; } $m = function (){ $x =& $this; $x = new stdClass; var_dump($this, $this->a); }; $a = new A; $m = $m->bindTo($a); $m(); Expected result: ---------------- * Cannot re-assign $this OR * 'stdClass' + Notice OR * 'A' + 'public Actual result: -------------- object(stdClass)#1 (0) { } string(6) "public" ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=62135&edit=1
