No... the referer header is sent by your web browser.
But if you really want to forge such things, you can get PHP to send the http requests, and then you can add any HTTP Referer as the header there...
Of course, this is an entirely different story. You can even try and use the http class by Manuel Lemos at http://phpclasses.upperdesign.com
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http://phpclasses.websapp.com/goto/browse.html/package/3.html
Have fun
