dedecmsdedeCMS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.')'; 

}