If I set a page to return to after the transaction is complete, I can get it to add credits to the users account. However, they could just refresh this page to gain more credits. Ideally there would be a payment ID sent through POST to my page. Is this the case? How can I set this up?
Also, is it possible to test the system without actually paying money each time?
Thanks
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"How Can I Set Up A Paypal Button That Only Adds Credit Once Per Transaction?" was posted on Saturday, January 2nd, 2010 at 1:33 pm.
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How can I set this up?
Easyest way is:https://www.paypal.com/cy/cgi-bin/webscr…
Also, is it possible to test the system without actually paying money each time?
For this you should set up Sandbox account:https://developer.paypal.com/