mtv\wp\models\UserCollection::get_by PHP Метод

    public static function get_by($kwargs)
    {
        if (isset($kwargs['user_email'])) {
            $userid = get_user_id_from_string($kwargs['user_email']);
            if ($userid === 0) {
                throw new JsonableException(__("I don't know that email address", 'mtv'));
            }
        } else {
            if (isset($kwargs['user_login'])) {
                $userid = get_user_id_from_string($kwargs['user_login']);
                if ($userid === 0) {
                    throw new JsonableException(__("I don't know that user name", 'mtv'));
                }
            } else {
                throw new NotImplementedException();
            }
        }
        $user = new static::$model(array('id' => $userid));
        $user->fetch();
        return $user;
    }