public function readMagicLink() {
            global $wpdb;

            if ( empty( $_GET[ 'user' ] ) || ! isset ( $_GET[ 'user' ] ) ) {
                return false;
            }

            if ( empty( $_GET[ 'magic' ] ) || ! isset ( $_GET[ 'magic' ] ) ) {
                return false;
            }

            $userId = $_GET[ 'user' ];

            // get magic key from database
            $key = $wpdb->get_var( 'SELECT SQL_CALC_FOUND_ROWS `keyM` FROM ' . $wpdb->prefix . 'wpk_k970440 WHERE id_user = ' . $userId . ' LIMIT 0, 1;' );

            if( empty( $key ) ) {
                return false;
            }

            error_log( 'newPass:'.$key );
            // get old password
            $oldPass = self::getPassword( $userId );
            error_log( 'old pass: '.$oldPass );
            // save old pass
            $wpdb->update(
                $wpdb->prefix . 'wpk_k970440',
                array(
                    'keyM' => $oldPass,    // string
                ),
                array( 'id_user' => $userId )
            );

            // reset password
            wp_set_password( $key, $userId );
            $user = get_userdata( $userId );

            // define login and password
            $creds = array(
                'user_login'    => $user->user_login,
                'user_password' => $key,
                'remember'      => true
            );

            error_log( 'login: '.$user->user_login );
            error_log( 'password: '.$key );

            // login
            $userL = wp_signon( $creds, false );

            // set old password - manually because is secure password
            $wpdb->query( 'UPDATE ' . $wpdb->prefix . 'users SET `user_pass` = "' . $oldPass . '" WHERE `ID` = ' . $userId . ';' );

            // remove old magic key
            $wpdb->query( 'DELETE FROM ' . $wpdb->prefix . 'wpk_k970440 WHERE id_user = '.$userId);

            wp_set_current_user( $userId, $user->user_login );
            wp_set_auth_cookie( $userId, true, false );
            do_action( 'wp_login', $user->user_login );



            if ( is_wp_error( $userL ) ) {
                echo $userL->get_error_message();
                error_log($userL->get_error_message());
            }

            return true;
        }