Online PHP tutorials

[ULTIMATESSJ]

Does anyone know of any good PHP tutorials to help me learn how to hack vBulletins, i've tried making some and i get errors quite a lot

[mjames]

Some tutorial links:

http://www.webguys.com/pdavis/Programs/What_Is_PHP
http://builder.cnet.com/webbuilding/pages/Programming/PHPIntro
http://www.hotscripts.com/PHP/Tips_and_Tutorials/Introduction_to_PHP