header redirect IP

[hokie5449]

If I do something like header(Location: www.url.com). Is there a way that url.com would be able to get the IP from the server that did the redirect? It looks like $_SERVER["REMOTE_ADDR"] returns the clients IP address which isnt what I need.

Thanks

[dagon]

you could use $_SERVER['HTTP_REFERER'] but it is very unreliable, your better passing an argument in the url ie

header("Location: http://www.url.com?from=abc.com");