Users Online | deuxcode.com

 A function that shows online users either anonymous, authenticated, or both.

 /**
  * Returns number of users online
  *
  * @param $type
  *  can be 'anon', 'auth', or '' which returns both
  */
 function deuxcode_users_online($type = '') {
 
   $interval = time() - variable_get('user_block_seconds_online', 900);
 
   switch ($type) {
     case 'anon':
       $users_count = sess_count($interval);
       break;
     case 'auth':
       $users_count = db_result(db_query("SELECT COUNT(DISTINCT uid) FROM {sessions} WHERE uid > 0 AND timestamp >= %d", $interval));
       break;
     default:
       $count_anon = sess_count($interval);
       $count_auth = db_result(db_query("SELECT COUNT(DISTINCT uid) FROM {sessions} WHERE uid > 0 AND timestamp >= %d", $interval));
       $users_count = $count_anon + $count_auth;
        break;
   }
   return $users_count;
 }