我们走吧。首先，创建自定义帖子类型（产品）：

add_action( \'init\', \'add_post_type_products\' );
function add_post_type_products() {
    $labels = array(
        \'menu_name\'             => _x(\'Products\', \'your_text_domain\'), // the menu name text. This string is the name to give menu items. Defaults to value of name
        \'name\'                  => _x(\'Products\', \'post type general name\', \'your_text_domain\'), // general name, usually plural. The same as, and overridden by $post_type_object->label
        \'singular_name\'         => _x(\'Products\', \'post type singular name\', \'your_text_domain\'), // name for one object of this post type. Defaults to value of name
        \'all_items\'             => _x(\'All Products\', \'your_text_domain\'), // the all items text used in the menu. Default is the Name label
        \'add_new\'               => _x(\'Add Product\', \'your_text_domain\'), // the add new text. The default is Add New for both hierarchical and non-hierarchical types.
        \'add_new_item\'          => __(\'Add Product\', \'your_text_domain\'), // the add new item text. Default is Add New Post/Add New Page
        \'edit_item\'             => __(\'Edit Product\', \'your_text_domain\'), // the edit item text. Default is Edit Post/Edit Page
        \'new_item\'              => __(\'New Product\', \'your_text_domain\'), // the new item text. Default is New Post/New Page
        \'view_item\'             => __(\'View\', \'your_text_domain\'), // the view item text. Default is View Post/View Page
        \'search_items\'          => __(\'Search Product\', \'your_text_domain\'), // the search items text. Default is Search Posts/Search Pages
        \'not_found\'             => __(\'Not Found\', \'your_text_domain\'), // the not found text. Default is No posts found/No pages found
        \'not_found_in_trash\'    => __(\'Not found on trash\', \'your_text_domain\'), // the not found in trash text. Default is No posts found in Trash/No pages found in Trash
        \'parent_item_colon\'     => \'\', // the parent text. This string isn\'t used on non-hierarchical types. In hierarchical ones the default is Parent Page
        \'slug\'                  => \'products\' // the slug for this post type
    );
    $args = array(
        \'labels\'                => $labels,
        \'menu_position\'         => 5, // The position in the menu order the post type should appear. show_in_menu must be true
        \'menu_icon\'             => theme_path . \'/images/product-icon.png\', // The url to the icon to be used for this menu
        \'public\'                => true, // Whether a post type is intended to be used publicly either via the admin interface or by front-end users
        \'exclude_from_search\'   => false, // Whether to exclude posts with this post type from front end search results
        \'has_archive\'           => true, // Support to archive-{post-type}.php file
        \'publicly_queryable\'    => true, // Whether queries can be performed on the front end as part of parse_request()
        \'show_ui\'               => true, // Whether to generate a default UI for managing this post type in the admin
        \'show_in_menu\'          => true, // Where to show the post type in the admin menu. show_ui must be true
        \'show_in_admin_bar\'     => true, // Whether to make this post type available in the WordPress admin bar
        \'show_in_nav_menus\'     => false, // Whether post_type is available for selection in navigation menus
        \'hierarchical\'          => false, // Whether the post type is hierarchical
        \'rewrite\'               => true, // Triggers the handling of rewrites for this post type
        \'query_var\'             => true, // Sets the query_var key for this post type
        \'can_export\'            => true, // Can this post_type be exported
        \'supports\'              => array(\'title\',\'editor\',\'author\',\'thumbnail\',\'excerpt\',\'comments\') // Supported values: title, editor, author, thumbnail, excerpt, trackbacks, custom-fields, comments, revisions, page-attributes, post-formats
    );
    register_post_type(\'products\', $args);
    flush_rewrite_rules();
}

add_action(\'init\', \'add_taxonomy_product_categories\');
function add_taxonomy_product_categories() { 
    $post_types = array(\'products\');
    $args = array( 
        \'hierarchical\' => true,
        \'labels\' => array( 
            \'name\'              => _x(\'Categories\', \'taxonomy general name\', \'your_text_domain\'),
            \'singular_name\'     => _x(\'Category\', \'taxonomy singular name\', \'your_text_domain\'),
            \'search_items\'      => __(\'Search Category\', \'your_text_domain\'), 
            \'all_items\'         => __(\'All Categories\', \'your_text_domain\'), 
            \'parent_item\'       => __(\'Parent Category\', \'your_text_domain\'), 
            \'parent_item_colon\' => __(\'Parent Category:\', \'your_text_domain\'), 
            \'edit_item\'         => __(\'Edit Category\', \'your_text_domain\'),
            \'update_item\'       => __(\'Update Category\', \'your_text_domain\'),
            \'add_new_item\'      => __(\'Add New Category\', \'your_text_domain\'),
            \'new_item_name\'     => __(\'New Category\', \'your_text_domain\'), 
            \'menu_name\'         => __(\'Categories\', \'your_text_domain\'), 
        ),
        \'rewrite\' => array( 
            \'slug\'              => \'product_categories\',
            \'with_front\'        => false, // Don\'t display the category base before "/slug/" 
            \'hierarchical\'      => true // This will allow URL\'s like "/slug/sub-slug/" 
        )
    );
    register_taxonomy(\'product_categories\', $post_types, $args);
    flush_rewrite_rules();
}