#47833 [Opn->Fbk]: xpath::query fails when huge xml file loaded

From: Date: Mon, 13 Apr 2009 18:27:35 +0000
Subject: #47833 [Opn->Fbk]: xpath::query fails when huge xml file loaded
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-135784@lists.php.net to get a copy of this message 
 ID:               47833
 Updated by:       jani@php.net
 Reported By:      getmequick at gmail dot com
-Status:           Open
+Status:           Feedback
 Bug Type:         DOM XML related
 Operating System: Windows XP
 PHP Version:      5.2.9
 New Comment:

Please try using this CVS snapshot:

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

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




Previous Comments:
------------------------------------------------------------------------

[2009-03-29 20:41:54] 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.


------------------------------------------------------------------------


-- 
Edit this bug report at http://bugs.php.net/?id=47833&edit=1

Thread (2 messages)

« previous php.bugs (#135784) next »