Helper\Stats::countUser PHP Method

    public static function countUser()
    {
        $stn = DB::getInstance()->prepare("SELECT count(1) FROM `member`");
        $stn->execute();
        return $stn->fetch(DB::FETCH_NUM)[0];
    }

 public function index()
 {
     $data['user'] = User::getCurrent();
     $data['flow_num10'] = Stats::dataUsage(0);
     $data['flow_num30'] = Stats::dataUsage(1);
     $data['flow_num100'] = Stats::dataUsage(2);
     $data['flow_max'] = Stats::dataUsage(3);
     $data['userCount'] = Stats::countUser();
     $data['money'] = Stats::countMoney();
     Template::setContext($data);
     Template::setView('admin/index');
 }