织梦导航菜单判断是否有子栏目,有则显示否则隐藏(二级菜单调用)

我们做织梦模版的时候,在调用二级菜单的时候,会遇到这样的问题,如果有子栏目,就显示二级菜单,如果没有就不显示,下面给出代码:   {dede:channelartlist row=8 typeid='1,2,3,4,5'} <li class="tab dropdown">      <a href="{dede:field.typeurl/}" class="tablink arwlink" title="{dede:field.typename/}">{dede:field.typename/}</a>      {dede:field name=typeid runphp="yes"}      global $dsql; $sql = "SELECT id From `arctype` WHERE reid='@me' And ishidden<>1 order by sortrank asc limit 0, 100 ";      $row = $dsql->GetOne($sql);      @me=is_array($row)?'<ul class="subnav">':'';      {/dede:field}        {dede:channel type='son' noself='yes' }          <a href="[field:typeurl/]">[field:typename/]</a>      {/dede:channel}            {dede:field name=typeid runphp="yes"}      global $dsql; $sql = "SELECT id From `arctype` WHERE reid='@me' And ishidden<>1 order by sortrank asc limit 0, 100 ";      $row = $dsql->GetOne($sql);      @me=is_array($row)?'</ul>':'';           {/dede:field} </li> {/dede:channelartlist}