PayPal's API was actually pretty easy to implement for my subscription service.
PayPalTech has a nice script generator that outputs a simple PHP script that gets data from PayPal's API after a purchase/subscription is processed, I'm a terrible coder and I was able to get all the data I needed pretty easily.
PayPalTech has a nice script generator that outputs a simple PHP script that gets data from PayPal's API after a purchase/subscription is processed, I'm a terrible coder and I was able to get all the data I needed pretty easily.
https://www.paypaltech.com/PDTGen/