帝国CMS判断会员是否登录及登录后才能看到内容的方法

<?php
require("class/connect.php");
include("class/db_sql.php");
include("class/config.php");
include("data/dbcache/class.php");
$link=db_connect();
$empire=new mysqlquery();
$classid=intval($_GET[&#39;classid&#39;]);
$id=intval($_GET[&#39;id&#39;]);
$muserid=(int)getcvar(&#39;mluserid&#39;);//用户id
$musername=RepPostVar(getcvar(&#39;mlusername&#39;));//用户名
$mgroupid=(int)getcvar(&#39;mlgroupid&#39;);//会员组id
if($classid&&$id&&$class_r[$classid][tbname]&&$muserid)
{
$r=$empire->fetch1("select id,phone from {$dbtbpre}ecms_".$class_r[$classid][tbname]." where id=&#39;$id&#39; and 
classid=&#39;$classid&#39; limit 1");
if($r[id])
{
?>
document.write(&#39;<li title="<?=$r[phone]?>">手机：<?=$r[phone]?></li>&#39;);
<?php
}
}
else
{
?>
document.write(&#39;<li class="businessCard-embed-content-nologin"><span>手机：</span>
<span class="businessCard-embed-content-nologinIcon"></span><a id="businessCard-embed-login" href="#">
登录后可见</a></li>&#39;);
<?php
}
db_close();
$empire=null;
?>