phpcms如何调用某一组图里的所有图片

{pc:get sql=”select * from v9_picture_data where id = ‘$id’”}
    {loop $data $n $r}
        {loop string2array($r['pictureurls']) $pic_k $v}
             <a href=”{$r[url]}”><img src=”{$v[url]}” alt=”{$v[alt]}”/></a>
        {/loop}
    {/loop}
{/pc}