Topic awaiting preservation: redirect and referer (Page 1 of 1)

Hi,

I have affiliates drive traffic to my website from links given them through a Directtrack (.com) affiliate program. Directtrack performs a redirect so that when the client gets to my site from a redirect they see my URL. That's all fine and good how ever I'd like to capture the referer link. When I try echoing $_SERVER['HTTP_REFERER'] in PHP it is blank.