帝国cms获取当前栏目的顶级栏目ID以及顶级栏目ID以下的栏目列表

//获取当前栏目的上级顶级栏目
function getfirstclassid($classid){
 global $empire,$dbtbpre;
 $result = mysql_query("select * from {$dbtbpre}enewsclass where classid = '$classid' limit 1");
 while($row=mysql_fetch_array($result)){
  $bclassid = $row[bclassid];
 }
 if($bclassid>0){
  $firstclassid = getfirstclassid($bclassid);
 }else{
  $firstclassid =  $classid;
 }
 /*
 $result = mysql_query("select * from {$dbtbpre}enewsclass where classid = '$bclassid' limit 1");
 while($row=mysql_fetch_array($result)){
  $bclassid = $row[bclassid];
 }
 */
 return $firstclassid;
}

<?php
   $firstclassid = getfirstclassid($_GET[classid]);
   $result = mysql_query("select classname from {$dbtbpre}enewsclass where classid = '$firstclassid' limit 1");
   while($row=mysql_fetch_array($result)){
    $firstclassname = $row[classname];
   }
   ?>

<?php
$result = mysql_query("select * from {$dbtbpre}enewsclass where bclassid = '$firstclassid' order by myorder asc limit 15 ");
while($row=mysql_fetch_array($result)){
?>
<li><a href="/e/action/ListInfo/?classid=<?=$row['classid']?>" target="_blank"><?=$row['classname']?></a></li>

<?php
}
?>