Email & Credit Card Validation functions

[bobtest]

I am trying to do simple email validation as well as Credit Card validation (mod 10 arithmetic). Does any one know any simple functions I could include in my script as the classes I've got - I can't get them to be read by my script.

Thanks

[firepages]

cc validation scripts here-> http://www.hotscripts.com/PHP/Scripts_and_Programs/E-Commerce/Credit_Card_Processing/

and a nice toot here-> http://www.webmasterbase.com/article/728 should you want to roll your own