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private function checkCookie(){
                  if(!isset($_COOKIE['sessid'])) {
                          $this->userInfo['id'] = 0;
                          $this->userInfo['isAdmin'] = false;
                          return false;
                  }

                  $id_lenght = strlen($_COOKIE['sessid']) - 32;
                  $cookie_id = substr($_COOKIE['sessid'],0,$id_lenght);
                  $cookie_hash = substr($_COOKIE['sessid'],$id_lenght);
                  $this->registry['db']->heal($cookie_id); // антиинжект
                  $dbres = $this->registry['db']->query("SELECT password FROM users WHERE user_id = '$cookie_id';")->fetch();
                  if(md5($dbres['password']) == $cookie_hash){
                         $this->userInfo['id'] = $cookie_id;
                         return true;
                  }
                  return false;
      }