Referral helper for OpenTable form submissions

opentableAction.php

<?php

/**
 * Referral helper for OpenTable form submissions
 * 
 * The RestaurantReferralID must match the RestaurantID value, however the 
 * only solution for this is JavaScript. This script copies the 
 * RestaurantID into the RestaurantReferralID and passes it to the 
 * OpenTable action endpoint.
 * 
 * @author  Made by Cloud Limited
 */

$request = $_REQUEST;

if (isset($request['RestaurantReferralID'])
	&& isset($request['RestaurantID'])
	&& (empty($request['RestaurantReferralID'])
		|| $request['RestaurantReferralID'] != $request['RestaurantID']))
{
	$request['RestaurantReferralID'] = $request['RestaurantID'];
}

header('Location: http://www.opentable.co.uk/restaurant-search.aspx?' . http_build_query($request));
exit;