http referer and header location problem

[eurusd]

On site site1.com and many others people use ip showing gif
<img src=site2.com/yourip.gif>

I want to redirect from site2.com to site3.com

PHP Code:

Header("Location: site3.com/newip.php"); 


But how to change or blank $REFERER, so site3.com sees as referrer site2.com or blank?
Any Ideas? Is there any trick to that?

[Jaan]

PHP Code:

unset($_SERVER['HTTP_REFERER']); 


I don't know if it works but you can try it

[eurusd]

hmm, did you try it?

[eurusd]

nope does not work

[orjan]

I think that the referrer is sent by the browser to the server in the request
something like:

GET /index.php
REFERRER dom2.com/index.php

The server itself would never know on which page the browser just left.