Wrapper XMLReader(http://php.net/manual/ru/book.xmlreader.php) class, for simple SAX-reading(and simple XPath-queries) of huge(testing over 1G file) xml.
Minimum the memory usage of other xml libraries(SimpleXML, DOMXML).
Usage example: http://github.com/dkrnl/SimpleXMLReader/blob/master/examples/example1.php
License: Public Domain