More (web) resources

DOM

Very good (English written) intro to XML in PHP at IBM Developerworks: Reading and writing the XML DOM with PHP

SimpleXML

Elliotte Rusty Harold: SimpleXML processing with PHP A markup-specific library for XML processing in PHP

XML in PHP

Jiří Kosek /in Czech/: Very good Czech-written intro series on XML in PHP Processing by Jirka Kosek (www.zdrojak.cz)