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Bug #27376 Array recrusion make Memory leak
Submitted: 2004-02-24 08:03 UTC Modified: 2004-02-24 14:10 UTC
From: rxk at gmx dot de Assigned:
Status: Not a bug Package: Arrays related
PHP Version: 4.3.4 OS: win2000/Linux
Private report: No CVE-ID: None
View Developer Edit
 [2004-02-24 08:03 UTC] rxk at gmx dot de 
Description:
------------
unset don't free the memory.

Reproduce code:
---------------
<?php
set_time_limit(0);
$a=array();

for($j=0;$j<5;$j++) {
	for($i=0;$i<20000;$i++) {
	
		$a[$i] = array(1,2,3,4,5);
		$a[$i][] = &$a[$i];

	}
	echo "before unset\n";sleep(5);
	unset($a);
	echo "after unset\n";sleep(5);
}
?>

Actual result:
--------------
There is none differentiated before or after unset.
The memory overflows.

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 [2004-02-24 08:40 UTC] derick@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

Infinite recursion like this is always leaking. Don\'t you think your example is pretty dumb anyway? :)
 [2004-02-24 14:10 UTC] rxk at gmx dot de 
I don't think this example ist pretty. But this ist a Problem for me. The class phpxpath (http://sourceforge.net/projects/phpxpath/) use recursive arrays. I will to use the class in a shell-script-daemon but with thge "bug" is this not possibly!
 
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