How to check payment success android in-app billing v3?

Question

PHP

It is necessary to integrate built-in payments into the android application, then check them on the server and give the content if everything is fine.
Out of the corner of my ear I heard that in the third version of in-app billing, it became possible to interact with the Google server, receiving information about a given transaction from there. At the same time, I can not find any ready-made solutions or detailed documentation for such an implementation.
Does Google provide the ability to verify payments with a request from their server? Can their server send payment notifications to my server? If yes, how is it implemented?

Answer 1

https://developers.google.com/android-publisher/ar...

Answer 2

I prefer to use this library
https://github.com/anjlab/android-inapp-billing-v3