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Request #44761 DOM & Large Files
Submitted: 2008-04-17 14:34 UTC Modified: 2011-10-15 12:03 UTC
Votes:1
Avg. Score:4.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:1 (100.0%)
From: xwisdom at yahoo dot com Assigned:
Status: Not a bug Package: *General Issues
PHP Version: 5.2.5 OS: Windows XP
Private report: No CVE-ID: None
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 [2008-04-17 14:34 UTC] xwisdom at yahoo dot com 
Description:
------------
I think the (X)HTML DOM features are great but I would like for it to process the DOMDocument much faster.

It appears that the HTML DOM features in php are not able to handle large html files (200k+). It's slow down when processing these files.

I would like to request that the DOM processing objects be given a speed boost. The DOM that's present in the browsers are much faster at processing the element. If this can be done then it would be great!

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 [2011-10-14 15:27 UTC] clicky at erebot dot net 
The DOM extension is meant explicitely to handle small XML files as it requires a copy of the file being processed and a large number of objects be kept in memory (this is also true for the SimpleXML extension which is based on the same underlying parsing library).

If you need a faster alternative, I'd suggest you take a look at the XMLReader and XML Parser extensions (http://php.net/manual/en/book.xmlreader.php and http://php.net/manual/en/book.xml.php, respectively).
XMLReader works by using a cursor-based parsing approach, while XML Parser uses a push-based approach.
Here are some drawbacks though when using these extensions:
- validation may not be possible (true XML Parser)
- you can't use XPath to browse through the data (true for both extensions)

Hope this helps.
 [2011-10-15 12:03 UTC] rrichards@php.net
-Status: Open +Status: Bogus -Package: Feature/Change Request +Package: *General Issues
 [2011-10-15 12:03 UTC] rrichards@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
 
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