In this brief article we have covered the following in regards to processing XML with PHP:
Simple XML document structure
defining simple tag definitions for the XML parser
setting simple options for the XML parser
registering callback functions with the XML parser
using the XML parser from within a PHP class and
then using that class from another script.
I hope that this introduction helps you in getting started and exploring the power of XML with PHP.
Some links that you may find helpful are listed below: