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card processing question

Ken Boyd
Ranch Hand

Joined: Dec 10, 2003
Posts: 329
I have following question regarding credit card processing..
1. You want to deliver PIN number when credit card is valid & deduct your inventory of PIN accordingly. I mean credit card validation is done by someone else & how you will update customer account for order info & deduct your inventory?
a. Client disconnected before we can update our inventory database but credit card is valid & charged. What we should do to avoid this situation or store something in database for temp transaction & look at that data if above situation occur.
b. If everything is good like you get YES from card validation take out that product from inventory & enter order info to user account. All done IN database MySQL.
I know many card processing agency provide API & reply which indicate CC validation. If someone can give me idea about first problem that will be great.
Thank you


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subject: card processing question