note 106971 added to control-structures.foreach
| From: | nobody at nobody dot com | Date: | Thu, 22 Dec 2011 09:11:51 +0000 |
| Subject: | note 106971 added to control-structures.foreach | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-185201@lists.php.net to get a copy of this message | ||
<?php
$d3 = array('a'=>array('b'=>'c'));
foreach($d3['a'] as &$v4){}
foreach($d3 as $v4){}
var_dump($d3);
?>
will get something look like this:
array(1) {
["a"]=>
array(1) {
["b"]=>
&array(1) {
["b"]=>
*RECURSION*
}
}
}
then you try to walk some data with this array.
the script run out of memory and connect reset by peer
the document says:
Warning
Reference of a $value and the last array element remain even after the foreach loop. It is
recommended to destroy it by unset().
so what I learn is that NEVER ignore """Warning""" in document....
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Probable Submitter: 125.71.228.149
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Manual Page -- http://www.php.net/manual/en/control-structures.foreach.php
Edit -- https://master.php.net/note/edit/106971
Del: integrated -- https://master.php.net/note/delete/106971/integrated
Del: useless -- https://master.php.net/note/delete/106971/useless
Del: bad code -- https://master.php.net/note/delete/106971/bad+code
Del: spam -- https://master.php.net/note/delete/106971/spam
Del: non-english -- https://master.php.net/note/delete/106971/non-english
Del: in docs -- https://master.php.net/note/delete/106971/in+docs
Del: other reasons-- https://master.php.net/note/delete/106971
Reject -- https://master.php.net/note/reject/106971
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