More Information

http://ny1.php.net/talks/show.php/php5intro

http://cvs.php.net/cvs.php/ZendEngine2/ZEND_CHANGES?login=2

http://cvs.php.net/cvs.php/ZendEngine2/OBJECTS2_HOWTO?login=2

http://marcus-boerger.de/php/ext/spl/

http://www.php.net/~sterling/adt/

http://www.php.net/~sterling/mono/