织梦DedeCMS图集模型调用图集中图片总数量的方法

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