Empire CMS는 회원이 로그인되어 있고 로그인한 후에만 콘텐츠를 볼 수 있는지 여부를 어떻게 확인합니까?

<?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; 
?>

<script src="[!--news.url--]e/show.php?classid=[!--classid--]&id=[!--id--]"></script>