Quote: "he IS going to need to modify the source in DBP and be able to communicate with SQL via php"
I've been looking at PHP a bit lately for a mySQL database that will be used for a FaceBook game.
It will be forever and a day before I get anything working right, but I think Sting is on the right track.
You will have to Mod the FPSC source code, so learn DBPro.
I am going to keep an eye on 'Project PHP' here in the forums, because that might be the easiest way to get going without knowing everything about everything.
Add in Instant Payment Notification (IPN) compatibility for PayPal payments, and the whole thing could be a fully automated money machine.