第二部分：读取数据库，并实现循环输出

<?php
$sql="select * from liuyan order by ly_id desc";
$conn=mysql_query($sql,$connec);
while($rs=mysql_fetch_array($conn)){  
?>
<table width="476" border="1" cellspacing="0" cellpadding="0">
  <tr>
  <td width="135" height="30"><div align="center">留言主题</div></td>
  <td width="204" height="30"><div align="center">留言时间</div></td>
  <td width="129" height="30"><div align="center">留言人</div></td>
  </tr>
  <tr bgcolor="#CC9999">
  <td height="30"><?= $rs["ly_title"]?>
    <div align="center"></div></td>
  <td height="30"><?= $rs["ly_time"]?>
    <div align="center"></div></td>
  <td height="30"><?= $rs["ly_author"]?>
    <div align="center"></div></td>
  </tr>
  <tr>
  <td height="30"><div align="center"><a href="huifu.php?id=<?php echo $rs["ly_id"]?>">回复留言</a></div></td>
  <td height="30"><div align="center"><a href="viewhuifu.php?id=<?php echo $rs["ly_id"]?>">查看回复信息</a></div></td>
  <td height="30"><div align="center">已有回复</div></td>
  </tr>
</table>
<?php
}
?>