How to execute the code, depending on the open tab in the browser?

Question

PHP

There is a checkout form in the store, in which there are two tabs, for unregistered users, and for registered ones, and an order confirmation button, depending on the selected tab, the "Confirm order" button must execute a different code, in the first case, register a user, authorize and confirm order, in the second just authorize and confirm the order. How to do this check on active tab?

Answer 1

In different "tabs" it is necessary to generate different forms.
Or change the action of the form, for example, by adding a parameter action="register.php?action=new_user"
Or add a field with type=hidden and add a certain parameter there