Is it possible to send a payment confirmation request to paypal?

Question

PHP

As already written in the title, if the opportunity to send a request to confirm the successful completion of the transfer process in PayPal.
That is, I want to send a request to the PayPal Api, passing the paymentKey as an argument, and in return I want something like
PaymentStatus = "success" or PaymentStatus="fail".

Answer 1

If you just want to know the status of the payment, then here or here
If you want to make a store, then pay attention to the Post Back API

Answer 2

What does the PayPal api documentation say about this?