wordpress 后台添加自定义菜单

后台添加book分类，在functions.php添加如下代码

add_action( 'init', 'create_post_type' );
function create_post_type() {
    register_post_type( 'book',
        array(
            'labels' => array(
                'name' => __( 'book' ),
                'singular_name' => __( 'book' )
            ),
            'public' => true,
            'has_archive' => true,
        )
    );
}