不显示最新更新

Question

我正在制作像Facebook一样的Feed功能，但出于某种原因，它会一起循环。 它不是显示最新到最旧的更新，而是在每个组的行中显示它们。

而不是循环为最旧，最新，最新，更新，它将它们作为一个包在自己的组中循环。

我的代码

} else if ($feed_viewing=='clan_updates') {

     $select_clan_membership = $db->query("SELECT * FROM spud_groups_members WHERE member_name='$mybb_username'");

     while($select_clan_membership_array = $db->fetch_array($select_clan_membership)) {

       $gurl = $select_clan_membership_array['gurl'];
       $select_posts_from_groups_query = $db->query("SELECT * FROM spud_groups_posts WHERE group_url='$gurl' ORDER BY post_id DESC");


     while($select_posts_from_groups_array = $db->fetch_array($select_posts_from_groups_query)) {

       $group_url_id = $select_posts_from_groups_array['group_url'];
       $post_body = $select_posts_from_groups_array['post_body'];

       $select_group_data_from_posts_query = $db->query("SELECT * FROM spud_groups WHERE gid='$group_url_id'");
       $select_group_data_from_posts_array = $db->fetch_array($select_group_data_from_posts_query);
       $group_name_data = $select_group_data_from_posts_array['group_name'];
       #$group_name_data = false;
       echo "<div class='mx'> 
       <p> <h2> $group_name_data </h2></p>
        $post_body</div>
 <br>
        ";
        }
    }