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Bug #47833 xpath::query fails when huge xml file loaded
Submitted: 2009-03-29 20:41 UTC Modified: 2009-04-21 01:00 UTC
From: getmequick at gmail dot com Assigned:
Status: No Feedback Package: DOM XML related
PHP Version: 5.2.9 OS: Windows XP
Private report: No CVE-ID: None
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 [2009-03-29 20:41 UTC] getmequick at gmail dot com
Description:
------------
I'm running latest PHP 5.2.9.1 on Win XP machine with apache 2.0 on it

I have 1GB free RAM (of 2GB)

here's the issue, I load huge xml file (8MB) that has namespace defined in it and try query with xpath, it ends with timeout error

strangely, when I move namespace definition out, it works. 
also, if I reduce filesize to say 1KB it also works (with namespace defined)

summary:

- Doesn't work when xml has a namespace defined and filesize is huge (~8MB tested)

- Works when filesize is tiny and has a namespace.
- Works when filesize is huge and no namespace defined.


Reproduce code:
---------------
test.xml
------------------
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.google.com/schemas/sitemap/0.84">
<url>
<loc>..</loc>
</url>
<url>
<loc>..</loc>
</url>
<url>
<loc>..</loc>
</url>
</urlset>


test.php
------------------
<?php
ini_set('display_errors', true);
ini_set('error_reporting', E_ALL);

$dom     = DomDocument::load('test.xml');
$xpath   = new DomXPath($dom);
$ns    = '';
if ($dom->documentElement && $dom->documentElement->namespaceURI)
{
  $xpath->registerNamespace('ns', $dom->documentElement->namespaceURI);
  $ns    = 'ns:';
}

$locUrls  = $xpath->query("//{$ns}loc");
var_dump($locUrls);
?>

Expected result:
----------------
Nodelist object.

Actual result:
--------------
PHP timeout error.

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 [2009-04-13 18:27 UTC] jani@php.net
Please try using this CVS snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/


 [2009-04-21 01:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 
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