foreach(array('HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_FORWARDED_FOR', 'HTTP_CLIENT_IP', 'HTTP_VIA') as $i)
		if(isset($_SERVER[$i]))
		{
			header('HTTP/1.1 403');
			header('Content-Type: text/plain');
			header('X-EXIT: NO SNIFF');
			exit('Proxy detected.');
		}