function listlist(&$num) 
{
    //if(1==$page) $num_last=1;
    //else $num_last=$num-100+1;
    $file_name="data";
    
    $real_num=0;
    for(;$real_num<=100;$num--)
    {
        $file_temp=$file_name.$num.".txt";
        if(FALSE==file_exists($file_temp)) continue;
        else
        {
            $real_num++;
            $message=file($file_temp);
            $len=count($message);

            echo '<table width="68%" align="center">';
            echo'<tr>';
            echo'<td width="80%" style="font-size:13px;font-family=fantasy">';
            //$message=fgets($fd_temp);
            echo $message[0];
            echo"\n";

            echo $i;

            echo'</td>';
            echo'<td width="20%" style="font-size:13px;font-family=fantasy; text-align=center">';
            echo"<a href='pre_delete.php?file=$file_temp&num=$i&max=$max'>删除留言</a>";
            echo"</td>";
            echo"</tr>";
            //echo"<br/>";
            echo'<tr>';
            echo'<td style="font-size:17px">';

            for($i=1;$i<$len;$i++)
            {
            echo $message[$i];

            }
            echo"</td>";
            echo"</tr>";
            echo'</table>';
        }
    }
    $num--;
}