How to check that from which page we came in the current page in php?

Question

I simply want to check that what was my previous page.

Answer 1

Nice 😮 thanks 😀 rudolph flash

Answer 2

The standard method is to check the referer HTTP header via $_SERVER['HTTP_REFERER'].
However, you have to pay attention because this header is not always sent by the browser or can even be faked.