code: public function clientGetByDbid($dbid)
      {
          foreach ($this->clientList() as $client) {
              if ($client["client_database_id"] == $dbid) {
                  return $client;
              }
          }
  
          throw new Ts3Exception("invalid clientID", 0x200);
      }
docs: Returns the Client object matching the given database ID.
  
  @param  integer $dbid
  @throws Ts3Exception
  @return Client