phpcms首页如何只显示指定栏目

下面的代码通过栏目id来控制显示哪些栏目，id根据实际情况后台查询，subcat函数看最后附件解释，以下修改代码：

{loop subcat(0,0,0,$siteid) $r}
  {if $r['catid']==1||$r['catid']==2 } //显示哪些栏目
        {php $num++}
        <div class="box cat-area" {if $num%2!=0}style=" margin-right:10px"{/if}>
          <h5 class="title-1">{$r}<a href="{$r}" class="more">更多>></a></h5>
             <div class="content">
             {pc:content  action="lists" catid="$r" order="updatetime DESC" thumb="1" num="1" return="info"}
             {loop $info $v}
              <p>
               @@##@@
                    <strong><a   target="_blank" title="{$v[&#39;title&#39;]}"{title_style($v)}>{str_cut($v[&#39;title&#39;],28)}</a></strong><br />{str_cut($v[&#39;description&#39;],100)}
                </p>
              {/loop}
              {/pc}               
                <div class="bk15 hr"></div>
                {pc:content action="lists" catid="$r" num="5" order="id DESC" return="info"}
                <ul class="list lh24 f14">
                {loop $info $v}
                 <li>·<a href="{$v[&#39;url&#39;]}" target="_blank" title="{$v[&#39;title&#39;]}"{title_style($v)}>{str_cut($v[&#39;title&#39;],40)}</a></li>
                {/loop}
                </ul>
                {/pc}
            </div>
        </div>
        {if $num%2==0}<div class="bk10"></div>{/if}
  {/if}
  {/loop}