Where can I read about the form of payment?

Question

Payment cards

Good afternoon. Recently, I was faced with the task of creating a form of payment a little different from everyone else. As I understand it, you can connect the form through api mastercard and paypal.
Let's say there are 2 people Peter and Vyacheslav. Peter sends money through the site to Vyacheslav, but at the same time, Peter must show in his personal account that this money is on his personal account on the site.
The question is how to display the number of the transferred currency in your personal account? Where can I read information about this or a similar form of payment?
Site on WP

Answer 1

in your setting - decompose nowhere
there are accounts in payment systems, you read data from there with your scripts and display it in your personal account,
you can practice on PayPal (google PayPal Sandbox ), but faster and easier - there is no crypt, fake
api mastercard, don't bother right away the same (it exists, but not for ordinary users, at least for a bank or a system with a license)