dedecms 栏目树形无限级菜单实现方法

在includechannelunit.func.php教程文件底部添加如下代码：
-----------------------------------------------------
/*树形栏目补充，获取二级，san级，四级栏目列表/

function getproducttree($typeid)
{
$linklist = "";
$dsql = new dedesql(false);
$dsql->setquery("select id,typedir,typename,isdefault from dede_arctype where reid = '$typeid' order by sortrank");
$dsql->execute();
while($row=$dsql->getobject())
{
   $typelink = gettypeurl($row->id,mftypedir($row->typedir),$row->isdefault,$row->defaultname,$row->ispart,$row->namerule2,$row->moresite,$row->siteurl,$row->sitepath);
   $linklist .= "n

".$row->typename."

nn";
   $linklist .= getsonclass($row->id);
}
$dsql->close();
return $linklist;
}

//获得小类栏目链接

function getsonclass($parentid)
{
$linklist = "";
$dsql = new dedesql(false);
$dsql->setquery("select id,typedir,typename,isdefault from dede_arctype where reid='$parentid' order by sortrank");
$dsql->execute($parentid);
while($row=$dsql->getobject($parentid))
{
   $typelink = gettypeurl($row->id,mftypedir($row->typedir),$row->isdefault,$row->defaultname,$row->ispart,$row->namerule2,$row->moresite,$row->siteurl,$row->sitepath);
   $linklist .= "

".$row->typename."

n";
   $linklist .= getsonclass2($row->id);
}
return $linklist;
}
function getsonclass2($parentid)
{
$linklist = "";
$dsql = new dedesql(false);
$dsql->setquery("select id,typedir,typename,isdefault from dede_arctype where reid='$parentid' order by sortrank");
$dsql->execute($parentid);
while($row=$dsql->getobject($parentid))
{
   $typelink = gettypeurl($row->id,mftypedir($row->typedir),$row->isdefault,$row->defaultname,$row->ispart,$row->namerule2,$row->moresite,$row->siteurl,$row->sitepath);
   $linklist .= "

".$row->typename."

n";
   $linklist .= getsonclass3($row->id);
}
return $linklist;
}
function getsonclass3($parentid)
{
$linklist = "";
$dsql = new dedesql(false);
$dsql->setquery("select id,typedir,typename,isdefault from dede_arctype where reid='$parentid' order by sortrank");
$dsql->execute($parentid);
while($row=$dsql->getobject($parentid))
{
   $typelink = gettypeurl($row->id,mftypedir($row->typedir),$row->isdefault,$row->defaultname,$row->ispart,$row->namerule2,$row->moresite,$row->siteurl,$row->sitepath);
   $linklist .= "

".$row->typename."

n";
}
return $linklist;
}

/*树形栏目补充*/
----------------------------------------------------------------------------
2、在模板里用

{dede:channel function='getproducttree(2)'}{/dede:channel}　

调用即可。这里getproducttree(2)中的 2 是产品展示的栏目id。如果你的是其他的，请作相应修改。