How to set up the function after a successful UnitPay payment?

Question

PHP

There is a purchase form on the site, after clicking the "Buy" button, it throws at the UnitPay gateway where the payment takes place, I'm a beginner, so the question is: "How can I make some code run on the gateway after the payment is successful? UnitPay SDK?

Answer 1

it's easier to find a ready-made script