#42158 [Opn]: SimpleXMLElement as parameter for preg_match leads to memory leak
| From: | chabrol at vfnm dot de | Date: | Tue, 31 Jul 2007 13:19:38 +0000 |
| Subject: | #42158 [Opn]: SimpleXMLElement as parameter for preg_match leads to memory leak | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-115601@lists.php.net to get a copy of this message | ||
ID: 42158
User updated by: chabrol at vfnm dot de
Reported By: chabrol at vfnm dot de
Status: Open
Bug Type: PCRE related
Operating System: Linux
PHP Version: 5CVS-2007-07-31 (snap)
New Comment:
little imprecision fix: Memory is only increasing until hitting
configured memory if you replace the limited for-loop by a while(true)
...
Previous Comments:
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[2007-07-31 13:13:45] chabrol at vfnm dot de
Description:
------------
If you use a SimpleXMLElement as parameter for preg_match or
preg_match_all, memory is lost.
P.S.: If you cast the parameter explicit with (string)$xml->name memory
usage doesn't increase. So i suppose it's an problem related to internal
casting.
Reproduce code:
---------------
<?php
$xml = simplexml_load_string("<root><name>foo</name></root>");
for ($i=1; $i<=20; $i++) {
preg_match("/bar/", $xml->name);
// or preg_match_all("/bar/", $xml->name, $matches);
echo "Memory usage after $i iterations: " . memory_get_usage() .
"\n";
}
?>
Expected result:
----------------
I would expect an more or less equal memory usage.
Actual result:
--------------
Memory usage is constantly increasing until hitting configured memory
limit
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=42158&edit=1