How to automatically post on social networks?

Question

PHP

The question is, I just can’t think of a mechanism for implementation:
1) The buyer buys the goods in IM, after placing the order, POPUP appears with the question:
“Do you want to share with friends?” if it presses yes, then post on your wall in VK ...
How to emulate pressing the VK button, let's say, through posting from share.pluso.ru?

Answer 1

codepen.io/anon/pen/Woormb
This is the most primitive example.
It is better if you use a callback from a popup to process a click.