PHP coupon code verification?

[gdogfunk]

Hello,

I have a client who will be placing an ad in several magazines and is planning on using a promotional code for each magazine. They are currently setup through paypal and I was asked to implement something that would allow the customer to access a page on their site and type in the promotional code. If the code matched, then they would be taken to a page where the buy now button is setup with the lower price. They also want to be able to track how many people used each promotional code. Is this something I can do with PHP? I was thinking that it almost be a password match type thing, but I'm not sure where to start. Would I build a table with the promo codes and then build a form for entry and when they enter the code it then checks for a match, if yes, then onward, if no, then error page.

Thanks in advance!

Ryan

[Shrike]

Yep PHP is perfectly suited to this kind of thing, as is any web oriented language.

I would probably take things a step further and tie the promo code to the product in the database, to try to ensure that the user doesn't use the same code for different products.

[gdogfunk]

Actually, there is only one product. They will get the discount only using the code...How might I go about tracking each code request?

Thanks!