Facebook Connect send SMS with PHP

I created an application in Facebook and now I would like to notify my users whether a certain event has happened by sending them a text message. I have already included the sms permissions to my application, but I can't find any examples/docum开发者_开发问答entation showing me how to properly send it with PHP.

The following is what I have so far:

 $smsrequest = $this->facebook_connect->fb->api('/sms.send/', 'GET',
      array(
           'uid'         => $user_id,
           'message'     => $message
      )
 );

sms.send was deprecated http://developers.facebook.com/roadmap/deprecations/ http://forum.developers.facebook.net/viewtopic.php?id=82649