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织梦的arclist标签可以按照文章点击次数、发布日期、得分等进行排序，今天有个客户需要按照软件下载次数进行排列，于是做了简单二次开发，首先找到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.')';
}
