在库目录里增加一个文件:index_comments.lbi 里面有内容如下:

<?php
if(!function_exists("get_comments")){
function get_comments($num)
{
   $sql = 'SELECT * FROM '. $GLOBALS['ecs']->table('comment') .
            ' WHERE status = 1 AND parent_id = 0 and comment_type=0 '.
            ' ORDER BY add_time DESC';
  if ($num > 0)
  {
   $sql .= ' LIMIT ' . $num;
  }
  //echo $sql;
       
  $res = $GLOBALS['db']->getAll($sql);
  $comments = array();
  foreach ($res AS $idx => $row)
  {
   $comments[$idx]['add_time']       = $comments[$idx]['add_time']       = local_date
($GLOBALS['_CFG']['time_format'], $row['add_time']);
   $comments[$idx]['user_name']       = $row['user_name'];
   $comments[$idx]['content']       = $row['content'];
   $comments[$idx]['id_value']       = $row['id_value'];
  }
  return $comments;
}
}
?>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!--数据调用-最新评论开始 -->      
<?php
   $this->assign('my_comments',get_comments(10)); // 10条数据
?>
  <div class="comments">
<!--{foreach from=$my_comments item=comments}-->
      <div class="t_l f_l"><a href="goods.php?id={$comments.id_value}" target="_blank">
{$comments.content|truncate:15:""}</a></div><div class="d_r f_r">时间：
{$comments.add_time}</div>
      <!--{/foreach}-->
  </div>

首页调用这个库文件就OK了.

<!-- #BeginLibraryItem "/library/index_comments.lbi" -->  <!-- #EndLibraryItem -->