RedBeanPHP\Facade::exec PHP Method

    public static function exec($sql, $bindings = array())
    {
        return self::query('exec', $sql, $bindings);
    }

 public function logout()
 {
     $adminId = $this->app->getSession()->get('adminId');
     $sql = "delete from `adminsession` where `admin_id` = '" . $adminId . "'";
     R::exec($sql);
     $this->app->getSession()->remove('adminId');
 }