Derick Rethans - dr@ez.no - twitter: @
http://derickrethans.nl/talks.php

http://derickrethans.nl/talks.php
http://www.derickrethans.nl/vld.php
http://xdebug.org
http://t3.dotgnu.info/blog/tags/inclued/

http://www.amazon.com/Extending-Embedding-PHP-Sara-Golemon/dp/067232704X
http://devzone.zend.com/article/1021