I need a google checkout api integration script.
This is for an existing website. I will post data to the script. The script will process the data, validate the user information (Return the user if necessary), and then redirect to the google checkout page when the user info is OK. When the checkout is complete, the script needs to process the data returned from google, update the database, and display a thankyou page for the customer.
SHould be pretty striaght forward.
The site is php 4.3...
Let me know if you need further info.