I need to create an account on my server for a user when they process a payment through Google checkout. I will be using a php script to process the payment notification. Has anyone done this? Are there some sample PHP scripts already out there? I read something about the notification history API and the Polling API - the both seem the same to me...
What is the best solution?
I found that the best way is to use the History API, although it will take at least 5 minutes for the account to be updated as my server will need to continually poll the server.