Edit report at https://bugs.php.net/bug.php?id=65248&edit=1
ID: 65248 Updated by: tyr...@php.net Reported by: 791446794 at qq dot com Summary: using references on foreach -Status: Open +Status: Not a bug Type: Feature/Change Request Package: Scripting Engine problem Operating System: Win PHP Version: Irrelevant Block user comment: N Private report: N New Comment: Per the warning at http://php.net/manual/en/control-structures.foreach.php, you should always unset() the iterator reference after the foreach to avoid this sort of issue, since PHP doesn't have block scope. Previous Comments: ------------------------------------------------------------------------ [2013-07-12 04:02:32] 791446794 at qq dot com Description: ------------ PHP version: 5.3.13 EXAMPLE: <?php $a=array( 'key'=>1 ); foreach($a as &$item) {} $b=array( 'abc'=>2 ); foreach($b as &$item) {} var_dump($a); ?> It will get "array(1) { ["key"]=> &int(2) } " Buy use code like following EXAMPLE: <?php $a=array( 'key'=>1 ); foreach($a as &$item) {} unset($item);//unset the variable $item $b=array( 'abc'=>2 ); foreach($b as &$item) {} var_dump($a); ?> It get the result "array(1) { ["key"]=> int(1) } "; I think that when use refrence in foreach ,it better auto unset the refrenced ITEM and don't need use 'unset' explicitly . ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65248&edit=1
