Please complete the commented sections in the IPN script that paypal provides. (PHP script is attached) You can also use an existing PHP script if it does the same thing.
If the transaction fails the error message should be emailed to the administrator.
The script will run on a site where a subscription system is already running.
(Basically, if the payment goes through one field in MySQL table will be updated to make the users account active)
Notes:**
Script should be well commented.
Paypal buttons ande MySQL code have already been done.
Thanks
-Gumscan