Use of the function %xml_parse_into_struct()% %PEAR::XML_Parser%, a class that allows event and tag driven parsing. By Stig Sæther Bakken %PEAR::XML_Tree%, a class that parses into a general tree of nodes (DOMXML style tree). By Bernd Römer and Tomas Cox. %PEAR::Tree%, a general class to represent trees that can handle XML data, as well as data from other sources (DBs, etc.). By Wolfram Kriesing. %PEAR::XML_Transformer%, allows XML transformations without XSLT by registering processing callback functions for each tag. By Sebastian Bergmann and Kristian Köhntopp.