我用这句话：

echo (the_user_favorites_list($user_id = um_profile_id(), $site_id = null, $include_links = true, $filters = null, $post_thumbnail_id = get_post_thumbnail_id()));

显示用户的收藏夹，但只显示帖子的链接。我想：

$post_thumbnail_id = get_post_thumbnail_id()

也会显示缩略图，但事实并非如此。我应该如何修改此内容以使其具有：

*Post1 title link*
*Thumbnail1* 

*Post2 title link*
*Thumbnail2* 

代码如下：

function get_user_favorites_list($user_id = null, $site_id = null, $include_links = false, $filters = null, $include_button = false)
{
    global $blog_id;
    $site_id = ( is_multisite() && is_null($site_id) ) ? $blog_id : $site_id;
    if ( !is_multisite() ) $site_id = 1;
    $favorites = new UserFavorites($user_id, $site_id, $include_links, $filters);
    return $favorites->getFavoritesList($include_button);
}

function the_user_favorites_list($user_id = null, $site_id = null, $include_links = false, $filters = null, $include_button = false)
{
    echo get_user_favorites_list($user_id, $site_id, $include_links, $filters, $include_button);
}

谢谢你的帮助