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班级成员留言簿： 显示留言：class/notebook/index.php
<?
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if(!session_is_registered("userregister")||($userregister==""))//检查是否注册,如userregister未注册或session为空值，重新注册.
{
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exit;
}
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<?php
include ("../config.php");
$result = mysql_query("SELECT * FROM notebook",$db);
$row=mysql_num_rows($result);//查看查询结果有多少行
$max=$row; //帖子总数
//设每页显示10篇，可自行设定，$p总页数，$page第几页，$low 从第几行开始读，$x 读取几行
if (!$page){ $page=1;}//$page默认值为1
$p=ceil($max/10);//页数为$max/10的最大整数
$low=10*($page-1);
if($page==$p&&($max%10)<0){$x=($max%10);} else {$x=10;}//如果是最后一页，且不是10的整倍数,读取$max除以10的余数，否则取10
if($max==0){$x=0;}//如果没有帖子，$x取0
$result = mysql_query("select * from notebook ORDER BY time DESC limit $low,$x",$db);//按照帖子的时间降序查询
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