8.6. Converting XML
You might want to convert an XML document into something else, such as an HTML document, a text file, or an XML file in a different format. The standard method for converting an XML document to another format is by using XSLT (eXtensible Stylesheet Language Transformations). XSLT is complex, so we are not going over all the details of the XML vocabulary. If you to learn more about XSLT, you can find the full specification at http://www.w3.org/TR/xslt.
If XSLT doesn't do what you want, you might need to resort to other solutions. The XML_Transformer PEAR class is one possible solution. With XML_Transformer, you can do XML transformations with PHP without the need for XSLT or external libraries.
8.6.1. XSLT
To use the XSLT functions ...
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