phpcms v9中get-sql调用数据表中的图组图片

{pc:get sql="SELECT pictureurls FROM phpcms_picture_data where id = $id" start="0" num="30" return="pictureurls" }
{loop $pictureurls $pic_k $r}
{php $a=string2array($r[pictureurls])}
{loop $a $pic_l $v} # www.jb200.com
<img src="{$v['url']}" longdesc="{$v['url']}" alt="{$v['alt']}" />
{/loop}
{/loop}
{/pc}