php自动添加相关文章

{pc:content action="relation" relation="$relation" id="$id" catid="$catid" num="20" order="id desc" keywords="$rs[keywords]"}
{loop $data $r}
<a href="{$r[url]}" title="{$r[title]}" target="_blank">{str_cut($r[title],93,'')}</a>
{/loop}
{/pc}