根据下级栏目获得顶级栏目名称的SQL语句

适用于 DEDE5.5，可能会有点影响速度，不过如果你站的数据不大的话可以忽略不计了。

代码如下：

{dede:field.typeid runphp=’yes’}
$ID = @me;
$sql = “SELECT * FROM `dede_arctype` WHERE id=$ID”;
$query = mysql_query($sql);
$row=mysql_fetch_array($query);
$relID = “$row[reid]”;
if($relID == 0) {@me = $row[typename];}
else{
$sql = “SELECT `typename` FROM `dede_arctype` WHERE id=$relID”;
$query = mysql_query($sql);
$row=mysql_fetch_array($query);
@me = $row[typename];
}
{/dede:field.typeid}

==============================================================
以下为更新标签，使用dedesql类操作。

{dede:field.typeid runphp=’yes’}
$ID = @me;
global $dsql;
$sql = “SELECT * FROM `dede_arctype` WHERE id=$ID”;
$dsql->Execute(‘a’, $sql);
$row = $dsql->GetArray(‘a’);
$relID = “$row[reid]”;
if($relID == 0)
{
@me = $row[typename];
}
else{
$sql = “SELECT `typename` FROM `dede_arctype` WHERE id=$relID”;
$dsql->Execute(‘t’, $sql);
$row = $dsql->GetArray(‘t’);

@me = $row[typename];
}
{/dede:field.typeid}