How do I save the original $_SERVER['HTTP_REFERER']; on a page that refreshes several times?

Question

I have a page where I need to get the referring URL so I can redirect them back after they compete a form. My problem is, the form has several drop menus and each time a selecti

Answer 1

When they go to the page save the referrer in a session variable.

After it refreshes and does the page logic, redirect to the session variable you saved.