dedecms获取顶级栏目的id,名称及链接

修改 include/helpers/extend.helper.php 

结尾增加 ：

if ( ! function_exists('gettoptype'))
{
function gettoptype($tid,$action)
{
global $dsql,$cfg_Cs;
if(!is_array($cfg_Cs))
{
require_once(DEDEDATA."/cache/inc_catalog_base.inc");
}
if(!isset($cfg_Cs[$tid][0]) || $cfg_Cs[$tid][0]==0)
{
$topid = $tid;
}
else
{
$topid = GetTopid($cfg_Cs[$tid][0]);
}
$row = $dsql->GetOne("SELECt * FROM `arctype` WHERe id=$topid");
$toptypename = $row['typename'];
$toptypeurl = $topid;
if($action=='id') return $topid;
if($action=='name') return $toptypename;
if($action=='link') return GetoneTypeUrlA($row);
}
}

调用代码 
{dede:field.typeid function="gettoptype(@me,id)"/} //id 
{dede:field.typeid function="gettoptype(@me,name)"/} //名称 
{dede:field.typeid function="gettoptype(@me,link)"/} //链接