织梦dedecms图集列表页、图集内容页调用图片数量的方法

{dede:list pagesize='12'}    
    <li>
        <a href=[field:arcurl/] target=_blank><img src=[field:litpic/] alt="[field:title/]" width=40 height=40 border=0></a><br>
        <a href=[field:arcurl/] target=_blank>[field:title/]</a><br>共[field:id  function="Getimgnum(@me)"/]张
    </li>   
{/dede:list}

function Getimgnum($aid)    
{    
    global $dsql;    
    $imgurls = '';    
    $row =$dsql->getone( "Select imgurls From `dede_addonimages` where aid='$aid' ");    
        $imgurls= $row['imgurls'];    
preg_match_all("/{dede:img (.*){\/dede:img/isU",$imgurls,$wordcount);     
$count=count($wordcount[1]);    
    return $count; 
}