Originally Posted by Nathan

As of NATS v3 this is a nats code:

list($data, $tourid, $subid1, $subid2, $adid) = explode(',', $natscode);
$chars = strlen($data);
$add = 4 - ($chars % 4);
if ($add < 4) while($add--) $data .= '=';

list($campaignid, $programid, $siteid) = explode(':', base64_decode($data));