Find Referer

Hi Guys,



I want to know how to find out who is sending visitors to my site. So i obviusly need to find out who a visitors referer is.



I took a guess and thought that this is what I should use:





But that does not return anything. Any ideas guys?

HTTP_REFERER and REMOTE_ADDR server variables can be blocked by firewalls and proxy servers, and won't return the proper IP for a computer on a private LAN behind a router.



But I don't know an alternative to definitively get the referrer IP or url.

If you want a system then you could write or use an Affiliates script.



When you give your URL to someone have an affiliate ID attached via the QueryString which you can record.