get方式获取页码，id号分页显示查询结果

<?php
require "../../class/connect.php";
require "../../data/dbcache/class.php";
require "../../class/db_sql.php";
$link = db_connect();
$empire = new mysqlquery();
$add = $_GET;
$tagid = $add[tagid];
$total="select count(*) as total from {$dbtbpre}enewstagsdata where tagid=$tagid ";
$res = mysql_query($total);
$num=mysql_fetch_array($res);
$totalNumber=$num[0];

$orderby = $_GET["orderby"];
$perNumber = 20;
$page = $_GET["page"];
$totalPage = ceil($totalNumber / $perNumber);
if (!$page) {
$page = 1;
}
$startCount = ($page - 1) * $perNumber;

$sql="select id from {$dbtbpre}enewstagsdata where tagid=$tagid order by newstime desc limit $startCount,$perNumber";
$rst = mysql_query($sql);
while($str=mysql_fetch_assoc($rst)) {
$query = mysql_query("select title,newstime,titlepic,titleurl,smalltext,classid,onclick,befrom from {$dbtbpre}ecms_news where id=$str[id]");
while ($row = $empire->fetch($query)) {
$titlepic = ($row["titlepic"] ? $row["titlepic"] : $public_r[newsurl] . "e/data/images/notimg.gif");
$csql = mysql_query("select classname from {$dbtbpre}enewsclass where classid='" . $row["classid"] . "' limit 1");
$cr = $empire->fetch($csql);
echo "<li class=\"item\"> <span id=\"ad_extra\" style=\"display:none;\"></span>
<div class=\"y-box item-inner\">
<div class=\"y-left lbox\" ga_event=\"article_img_click\">
<a class=\"img-wrap\" target=\"_blank\" href=\"" . $row["titleurl"] . "\"> <img alt=\"\" src=\"" . $titlepic. "\" /> </a>
</div>
<div class=\"rbox \">
<div class=\"rbox-inner\">
<div class=\"title-box\" ga_event=\"article_title_click\">
<a class=\"link title\" target=\"_blank\" href=\"" . $row["titleurl"] . "\"> " . $row["title"] . " </a>
</div>
<div class=\"y-box footer\">
<div class=\"y-left\">
<div class=\"y-left\">
<a class=\"lbtn tag-hot\" ga_event=\"article_avatar_click\" href=\"/" . $class_r[$row[classid]][classpath] . "/\">" . $class_r[$row[classid]][classname] . "</a>
<a class=\"lbtn source\" ga_event=\"article_name_click\">  " . $row["befrom"] . " </a>
</div>
<span class=\"lbtn\"> " . date("m-d H:i", $row["newstime"]) . "</span>
<span> " . $row["onclick"] . "阅读</span>
</div>
<div class=\"y-right\">
</div>
</div>
</div>
</div>
</div>";
}
}
$empire = NULL;
db_close();
?>