phpcms栏目调用

{loop subcat(0,0,0,$siteid) $r} 
        {php $num++}

          <h3><a href="{$r[url]}">{$r[catname]}</a></h3>
        <a href="{$r[url]}" title=""><img src="/sp/img/yzmlfk_96.jpg"/></a>

    {pc:content action="category" catid="$r[arrchildid]" num="20" siteid="$siteid" order="listorder ASC"}
{loop $data $r}
    [<a href="{$r[url]}">{$r[catname]}</a>]  {/loop}
{/pc}   
{/loop}

前一级栏目下的所有二级栏目：

{pc:content action="category" catid="$r[arrchildid]" num="20" siteid="$siteid" order="listorder ASC"}