织梦cms统计当前栏目下子栏目数量的方法

{dede:field.typeid runphp='yes'}
$id = @me;
global $dsql;
$sql="select COUNT(id) as num from dede_arctype WHERE reid=$id";
$row=$dsql->GetOne($sql);
@me= $row['num'];
{/dede:field.typeid}