wordpress add items to menu programatically

add_items_menu_wp.php

<?php

//add items to menu
add_filter( 'wp_nav_menu_items', 'add_extra_item_to_nav_menu', 10, 2 );
function add_extra_item_to_nav_menu( $items, $args ) {
    if (is_user_logged_in() && $args->menu == 1357) {
        $items .= '<li><a href="'. get_permalink( get_option('woocommerce_myaccount_page_id') ) .'">My Account</a></li>';
    }
    elseif (!is_user_logged_in() && $args->menu == 1357) {
        $items .= '<li><a href="' . get_permalink( wc_get_page_id( 'myaccount' ) ) . '">Sign in  /  Register</a></li>';
    }
    return $items;
}