How to read gigantic xml file with PHP? [duplicate]

This question already has answers here: Closed 11 years 开发者_Python百科ago.

Possible Duplicate:

Parsing Huge XML Files in PHP

I want to read wikipedia's xml dump files with PHP. They are gigantic. What should I do?

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A SAX-based parser should handle large files fine, as opposed to a tree-based parser.

Here, someone has rolled their own.