add_action('init', function () {
    // список параметров: https://wp-kama.ru/function/register_taxonomy
    register_taxonomy('product-category', ['products'], [
        'label'                 => '',
        'labels'                => [
            'name'              => 'Categories',
            'singular_name'     => 'Categories',
            'search_items'      => 'Search Categories',
            'all_items'         => 'All Categories',
            'view_item '        => 'View Category',
            'parent_item'       => 'Parent Category',
            'parent_item_colon' => 'Parent Category:',
            'edit_item'         => 'Edit Category',
            'update_item'       => 'Update Category',
            'add_new_item'      => 'Add New Category',
            'new_item_name'     => 'New Category Name',
            'menu_name'         => 'Categories',
        ],
        'description'           => '',
        'public'                => true,
        'hierarchical'          => true,
        'rewrite'               => [
            'slug'         => 'catalog',
            'hierarchical' => true,
            'with_front'   => false,
        ],
    ]);

    // https://wp-kama.ru/function/register_post_type
    register_post_type('products', [
        'label'  => null,
        'labels' => [
            'name'               => 'Products',
            'singular_name'      => 'Product',
            'add_new'            => 'Add new',
            'add_new_item'       => 'Add new product',
            'edit_item'          => 'Edit product',
            'new_item'           => 'New product',
            'view_item'          => 'View product',
            'search_items'       => 'Find product',
            'not_found'          => 'Products nof found',
            'not_found_in_trash' => 'In basket product not found',
            'parent_item_colon'  => '',
            'menu_name'          => 'Products',
        ],
        'description'         => '',
        'public'              => true,
        'show_in_rest'        => false,
        'rest_base'           => '',
        'hierarchical'        => false,
        'supports'            => ['title', 'editor', 'thumbnail'],
        'taxonomies'          => ['product-category'],
        'has_archive'         => 'catalog',
        'rewrite'             => [
            'slug'         => 'catalog/%product-category%',
            'with_front'   => false,
        ],
        'query_var'           => true,
    ]);
});
function products_permalink($permalink, $post)
{
    if (strpos($permalink, '%product-category%') === FALSE) return $permalink;

    $terms = get_the_terms($post, 'product-category');
    if (!is_wp_error($terms) && !empty($terms) && is_object($terms[0])) {
        $taxonomy_slug =  get_term_parents_list($terms[0]->term_id, 'product-category', [
            'separator' => '/',
            'format'    => 'slug',
            'link'      => false,
            'inclusive' => true,
        ]);
        $taxonomy_slug = mb_substr($taxonomy_slug, 0, -1);
    } else
        $taxonomy_slug = 'no-products';

    var_dump($taxonomy_slug);

    return str_replace('%product-category%', $taxonomy_slug, $permalink);
}
add_filter('post_type_link', 'products_permalink', 10, 2);