if (x($_REQUEST, "realtime_cb") && x($_REQUEST, "realtime_cb")) {
logger("facebook_init: Facebook Real-Time callback called", LOGGER_DEBUG);
- if (x($_REQUEST["hub_verify_token"])) {
+ if (x($_REQUEST, "hub_verify_token")) {
// this is the verification callback while registering for real time updates
$verify_token = get_config('facebook', 'cb_verify_token');