织梦dedeCMS列表标签按照下载次数排序

DEDECMS按照下载次数排序，排序在SQL语句里无非就是order by 下载次数 desc，知道了这个然后我们就看需要改哪里了。?
找到include目录下面的taglib目录里的arclist.lib.PHP文件在376行后加入如下代码?
if($orderby == 'down')?
{?
$sql = "select SUM(downloads) as down_num,id from dede_downloads group by id ORDER BY down_num DESC LIMIT 0,15";?
$dsql->Execute('me',$sql);?
while($drow = $dsql->GetArray() )?
{?
$arr[] = $drow['id'];?
}?
$dstr = implode(",",$arr);?
if($orwhere!='')?
{?
$orwhere .= " AND arc.id in($dstr)";?
}else{?
$orwhere .= " where arc.id in($dstr)";?
}?
$ordersql = 'ORDER BY field(arc.id,'.$dstr.')';?
}

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