How to get the name and link of the previous column in Dedecms

{dede:field name='typeid' runphp='yes'}
                                global $dsql;
                                /*获取当前栏目信息*/
                                $typeid = @me;
                                $query = "SELECT reid FROM dede_arctype where id = $typeid";
                                $rs = $dsql->GetOne($query);
                                $reid = $rs['reid'];//获取到栏目的上级栏目
                                
                                /*获取上级栏目信息*/
                                $query2 = "SELECT * FROM dede_arctype where id = $reid";
                                $row = $dsql->GetOne($query2);
                                
                                /*打印栏目上级栏目链接信息*/
                                $typename = $row['typename'];
                                $link = GetTypeUrl($row['typeid'],MfTypedir($row['typedir']),$row['isdefault'],$row['defaultname'],$row['ispart'],$row['namerule2'],$row['moresite'],$row['siteurl'],$row['sitepath']);
                                @me = "<a href=&#39;{$link}&#39;>$typename</a>";                                
                            {/dede:field}