How to parse larger XML file with limited resources?

Question

Possible Duplicate:
Parsing Huge XML Files in PHP

I am trying to parse a 70Mb XML file under PHP. After a while the resources are not enough and the script crashes. If there is a larger XML file it ends sooner. I can't change the memory limit of the server and of PHP.

What can I do to parse large files? The file size can vary, and it's not always 70Mb, it could easily be 200Mb.

Answer 1

You can use the XMLReader class.
It doesn't read the entire document as an object model into the memory but is a pull parser.

Answer 2

In general, when you want to parse large XML documents in a constrained environment, you should use a SAX parser, that does not store the entire document in any form. SAX parsers make calls to user defined functions when they encounter an opening or closing tag for example.