Пример #1
 * Registers a post type.
 * Note: Post type registrations should not be hooked before the
 * {@see 'init'} action. Also, any taxonomy connections should be
 * registered via the `$taxonomies` argument to ensure consistency
 * when hooks such as {@see 'parse_query'} or {@see 'pre_get_posts'}
 * are used.
 * Post types can support any number of built-in core features such
 * as meta boxes, custom fields, post thumbnails, post statuses,
 * comments, and more. See the `$supports` argument for a complete
 * list of supported features.
 * @since 2.9.0
 * @since 3.0.0 The `show_ui` argument is now enforced on the new post screen.
 * @since 4.4.0 The `show_ui` argument is now enforced on the post type listing
 *              screen and post editing screen.
 * @since 4.6.0 Converted to use `WP_Post_Type`.
 * @global array $wp_post_types List of post types.
 * @param string $post_type Post type key. Must not exceed 20 characters and may
 *                          only contain lowercase alphanumeric characters, dashes,
 *                          and underscores. See sanitize_key().
 * @param array|string $args {
 *     Array or string of arguments for registering a post type.
 *     @type string      $label                Name of the post type shown in the menu. Usually plural.
 *                                             Default is value of $labels['name'].
 *     @type array       $labels               An array of labels for this post type. If not set, post
 *                                             labels are inherited for non-hierarchical types and page
 *                                             labels for hierarchical ones. See get_post_type_labels() for a full
 *                                             list of supported labels.
 *     @type string      $description          A short descriptive summary of what the post type is.
 *                                             Default empty.
 *     @type bool        $public               Whether a post type is intended for use publicly either via
 *                                             the admin interface or by front-end users. While the default
 *                                             settings of $exclude_from_search, $publicly_queryable, $show_ui,
 *                                             and $show_in_nav_menus are inherited from public, each does not
 *                                             rely on this relationship and controls a very specific intention.
 *                                             Default false.
 *     @type bool        $hierarchical         Whether the post type is hierarchical (e.g. page). Default false.
 *     @type bool        $exclude_from_search  Whether to exclude posts with this post type from front end search
 *                                             results. Default is the opposite value of $public.
 *     @type bool        $publicly_queryable   Whether queries can be performed on the front end for the post type
 *                                             as part of parse_request(). Endpoints would include:
 *                                             * ?post_type={post_type_key}
 *                                             * ?{post_type_key}={single_post_slug}
 *                                             * ?{post_type_query_var}={single_post_slug}
 *                                             If not set, the default is inherited from $public.
 *     @type bool        $show_ui              Whether to generate and allow a UI for managing this post type in the
 *                                             admin. Default is value of $public.
 *     @type bool        $show_in_menu         Where to show the post type in the admin menu. To work, $show_ui
 *                                             must be true. If true, the post type is shown in its own top level
 *                                             menu. If false, no menu is shown. If a string of an existing top
 *                                             level menu (eg. 'tools.php' or 'edit.php?post_type=page'), the post
 *                                             type will be placed as a sub-menu of that.
 *                                             Default is value of $show_ui.
 *     @type bool        $show_in_nav_menus    Makes this post type available for selection in navigation menus.
 *                                             Default is value $public.
 *     @type bool        $show_in_admin_bar    Makes this post type available via the admin bar. Default is value
 *                                             of $show_in_menu.
 *     @type int         $menu_position        The position in the menu order the post type should appear. To work,
 *                                             $show_in_menu must be true. Default null (at the bottom).
 *     @type string      $menu_icon            The url to the icon to be used for this menu. Pass a base64-encoded
 *                                             SVG using a data URI, which will be colored to match the color scheme
 *                                             -- this should begin with 'data:image/svg+xml;base64,'. Pass the name
 *                                             of a Dashicons helper class to use a font icon, e.g.
 *                                             'dashicons-chart-pie'. Pass 'none' to leave div.wp-menu-image empty
 *                                             so an icon can be added via CSS. Defaults to use the posts icon.
 *     @type string      $capability_type      The string to use to build the read, edit, and delete capabilities.
 *                                             May be passed as an array to allow for alternative plurals when using
 *                                             this argument as a base to construct the capabilities, e.g.
 *                                             array('story', 'stories'). Default 'post'.
 *     @type array       $capabilities         Array of capabilities for this post type. $capability_type is used
 *                                             as a base to construct capabilities by default.
 *                                             See get_post_type_capabilities().
 *     @type bool        $map_meta_cap         Whether to use the internal default meta capability handling.
 *                                             Default false.
 *     @type array       $supports             Core feature(s) the post type supports. Serves as an alias for calling
 *                                             add_post_type_support() directly. Core features include 'title',
 *                                             'editor', 'comments', 'revisions', 'trackbacks', 'author', 'excerpt',
 *                                             'page-attributes', 'thumbnail', 'custom-fields', and 'post-formats'.
 *                                             Additionally, the 'revisions' feature dictates whether the post type
 *                                             will store revisions, and the 'comments' feature dictates whether the
 *                                             comments count will show on the edit screen. Defaults is an array
 *                                             containing 'title' and 'editor'.
 *     @type callable    $register_meta_box_cb Provide a callback function that sets up the meta boxes for the
 *                                             edit form. Do remove_meta_box() and add_meta_box() calls in the
 *                                             callback. Default null.
 *     @type array       $taxonomies           An array of taxonomy identifiers that will be registered for the
 *                                             post type. Taxonomies can be registered later with register_taxonomy()
 *                                             or register_taxonomy_for_object_type().
 *                                             Default empty array.
 *     @type bool|string $has_archive          Whether there should be post type archives, or if a string, the
 *                                             archive slug to use. Will generate the proper rewrite rules if
 *                                             $rewrite is enabled. Default false.
 *     @type bool|array  $rewrite              {
 *         Triggers the handling of rewrites for this post type. To prevent rewrite, set to false.
 *         Defaults to true, using $post_type as slug. To specify rewrite rules, an array can be
 *         passed with any of these keys:
 *         @type string $slug       Customize the permastruct slug. Defaults to $post_type key.
 *         @type bool   $with_front Whether the permastruct should be prepended with WP_Rewrite::$front.
 *                                  Default true.
 *         @type bool   $feeds      Whether the feed permastruct should be built for this post type.
 *                                  Default is value of $has_archive.
 *         @type bool   $pages      Whether the permastruct should provide for pagination. Default true.
 *         @type const  $ep_mask    Endpoint mask to assign. If not specified and permalink_epmask is set,
 *                                  inherits from $permalink_epmask. If not specified and permalink_epmask
 *                                  is not set, defaults to EP_PERMALINK.
 *     }
 *     @type string|bool $query_var            Sets the query_var key for this post type. Defaults to $post_type
 *                                             key. If false, a post type cannot be loaded at
 *                                             ?{query_var}={post_slug}. If specified as a string, the query
 *                                             ?{query_var_string}={post_slug} will be valid.
 *     @type bool        $can_export           Whether to allow this post type to be exported. Default true.
 *     @type bool        $delete_with_user     Whether to delete posts of this type when deleting a user. If true,
 *                                             posts of this type belonging to the user will be moved to trash
 *                                             when then user is deleted. If false, posts of this type belonging
 *                                             to the user will *not* be trashed or deleted. If not set (the default),
 *                                             posts are trashed if post_type_supports('author'). Otherwise posts
 *                                             are not trashed or deleted. Default null.
 *     @type bool        $_builtin             FOR INTERNAL USE ONLY! True if this post type is a native or
 *                                             "built-in" post_type. Default false.
 *     @type string      $_edit_link           FOR INTERNAL USE ONLY! URL segment to use for edit link of
 *                                             this post type. Default 'post.php?post=%d'.
 * }
 * @return WP_Post_Type|WP_Error The registered post type object, or an error object.
function register_post_type($post_type, $args = array())
    global $wp_post_types;
    if (!is_array($wp_post_types)) {
        $wp_post_types = array();
    // Sanitize post type name
    $post_type = sanitize_key($post_type);
    if (empty($post_type) || strlen($post_type) > 20) {
        _doing_it_wrong(__FUNCTION__, __('Post type names must be between 1 and 20 characters in length.'), '4.2.0');
        return new WP_Error('post_type_length_invalid', __('Post type names must be between 1 and 20 characters in length.'));
    $post_type_object = new WP_Post_Type($post_type, $args);
    $wp_post_types[$post_type] = $post_type_object;
     * Fires after a post type is registered.
     * @since 3.3.0
     * @param string       $post_type        Post type.
     * @param WP_Post_Type $post_type_object Arguments used to register the post type.
    do_action('registered_post_type', $post_type, $post_type_object);
    return $post_type_object;
 public function test_register_taxonomies()
     global $wp_post_types;
     $post_type = rand_str();
     $post_type_object = new WP_Post_Type($post_type, array('taxonomies' => array('post_tag')));
     $wp_post_types[$post_type] = $post_type_object;
     $taxonomies = get_object_taxonomies($post_type);
     $taxonomies_after = get_object_taxonomies($post_type);
     $this->assertEqualSets(array('post_tag'), $taxonomies);
     $this->assertEqualSets(array(), $taxonomies_after);