Site Check out.

[The Little Guy]

I don't know if it is allowed to post something like this, but... How do you make a check out? Not the shopping cart, I think I got that, but where the user enters in their credit card number, expiration date etc. Then some how it validates whether what they entered is valid or not.

[chesemonkyloma]

you would use regular expressions to check to make sure its valid. its hard to right you a script without knowing the shopping cart and the forms you are using. i dont know regex that much, but you also need to make sure you know the actual format of credit cards/etc. heres a class script for credit cards: http://www.sitepoint.com/article/card-validation-class-php