我使用以下代码创建了自定义帖子类型：

register_post_type(
    \'custom_type\',
    array(
        \'labels\'              => $labels,
        \'description\'         => \'\',
        \'public\'              => false,
        \'publicly_queryable\'  => false,
        \'exclude_from_search\' => true,
        \'show_in_nav_menus\'   => false,
        \'show_ui\'             => true,
        \'show_in_menu\'        => true,
        \'show_in_admin_bar\'   => true,
        \'menu_icon\'           => $icon,
        \'can_export\'          => false,
        \'delete_with_user\'    => false,
        \'hierarchical\'        => false,
        \'has_archive\'         => false,
        \'query_var\'           => false,
        \'capability_type\'     => \'custom_type\',
        \'map_meta_cap\'        => true,
        \'rewrite\'             => false,
        \'supports\'            => array(
            \'title\',
            \'custom-fields\'
        )
    )
);