ID: 42158
Comment by: ibapty at gmail dot com
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:
I can vouch for the workaround based on a similar issue (see
http://bugs.php.net/bug.php?id=41911) I encountered. Unfortunately that
bug got marked as bogus with a similar explaination.
I accept that in 99% of uses of PHP where script shutdown occurs that
this type of memory leak is acceptable. However, in my case I am using
PHP persistently with the win32service module (php.net/win32service). In
the end I have had to setup a routine to restart the service every few
minutes to workaround this type of memory leak instead of trying to
track them all down.
Previous Comments:
[2007-07-31 23:04:51] judas dot iscariote at gmail dot com
There is no memory leak, those leaks are reported at script shutdown by
the Zend Engine.
to fix your problem do this
preg_match(/bar/, (string)$xml-name);
yes, cast it to string.
[2007-07-31 13:19:38] chabrol at vfnm dot de
little imprecision fix: Memory is only increasing until hitting
configured memory if you replace the limited for-loop by a while(true)
...
[2007-07-31 13:13:45] chabrol at vfnm dot de
Description:
If you use a SimpleXMLElement as parameter for preg_match or
preg_match_all, memory is lost.
P.S.: If you cast the parameter explicit with (string)$xml-name memory
usage doesn't increase. So i suppose it's an problem related to internal
casting.
Reproduce code:
---
?php
$xml = simplexml_load_string(rootnamefoo/name/root);
for ($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
--
Edit this bug report at http://bugs.php.net/?id=42158edit=1
