wp_insert_post中没有可克隆的父类别

Question

如何选择哪些无法点击wp_insert_post中的父类别？

示例我想要http://fiddle.jshell.net/Pp7Ey/show/

谢谢回答！

   $title = $_POST['title'];
    $description = $_POST['description'];
    $cat = $_POST['cat'];

        $data = array(
        'post_title' => $title,
        'post_content' => $description,
        'post_status' => 'publish',
        'post_category' =>array($cat)
        );

wp_insert_post($data);

...

  <?php wp_dropdown_categories('orderby=name&hide_empty=0&show_count=1&show_option_none=Select one&class=cat&hierarchical=1&name=cat'); ?>