PHPCMS v9 调用多个栏目下文章的两个办法

在利用phpcms做网站的时候，经常会遇到一个问题，就是在当前列表调用多个栏目下面的内容的问题，那么如何解决呢，有两种方法，一般建议大家选取第一种使用。 第一种、直接写子栏目id ，用cat in

{pc:get sql= "SELECT * from v9_news where status=99 and catid in(21,22,23,24,25) order by id DESC"  num= "7"  return = "data" }
{loop  $data  $r }
        <li><a href= "{$r[url]}"  title= "{$r[title]}"  target= "_blank" >{str_cut( $r [ 'title' ],40)}({ date ( 'm-d' , $r [inputtime])})</span></a></li>
{/loop}
{/pc}

{loop subcat(15)   $k  $v }
{php  $subcatid [] =  $k ;}
{/loop}
{php  $subcatid   = implode( ',' ,  $subcatid );}
{pc:get sql= "SELECT * from v9_news where status=99 and catid in ($subcatid) order by id DESC"  num= "7"  return = "data"  }
{loop  $data  $r }
         <li><span><strong><a href= "{$CATEGORYS[$r[catid]][url]}" >[{ $CATEGORYS [ $r [catid]][catname]}]</a><a href= "{$r[url]}"  title= "{$r[title]}"  target= "_blank" >{str_cut( $r [ 'title' ],40)}</a></strong><em>[{ date ( 'Y-m-d' , $r [inputtime])}]</em></span></li>
{/loop}
{/pc}