Make a webhook

[san3jaya]

I have a website there is only one button called purchases. When it is clicked, it will redirect to this page: https://cafe-369.sumupstore.com/product/test-01

The customer will select the variant and will do the payment. once payment is successful it should redirect back to the main website. so I thought about using webhook but I am not sure I can do it with this workflow. So is there any way to do this?

More info: I am using php