织梦dedecms判断seo标题是否为空的解决方法：
如果为空时，则自动调用栏目名称的代码如下：{dede:field name='id' runphp='yes'}$tid=@me;$dsql = $db = new DedeSql(false);$sql='select seotitle from dede_arctype where id='.$tid;$arr = $db->GetOne($sql);$seotitle=$arr['seotitle'];if($seotitle==""){$sql='select typename from dede_arctype where id='.$tid;$arr = $db->GetOne($sql);@me=$arr['typename'];}else{@me=$seotitle;}