My Facebook Group Url is: http://www.facebook.com/groups/284064464943140/ I\'ve read that the group ID is in the Url labelled \"id=\" or \"groupid=\" but assume this has cha
Based upon graph api, you can get group ids as follows:
$facebook->api( '/'.$userId.'/groups', 'GET', array( 'access_token=' => $userToken ));
by iterating through its results.