php how to find the location where a user came from?

Question

simple question:

how to find the location (url) where a user came from before accessing my page?

and

how to find the locati         


        

Answer 1

To the first question:

Usually if someone comes to your page via a link or something like this a HTTP referer entry points to the refering page. See rfc2616

Second question:

If you have a link which links to an external page you may notice this by wrapping these links with some script. If someone types in a page by hand you will not be able to determine the location where the user went.