在Ecshop首页商品和商品分类页显示商品已销售数量的方法。

ecshop首页：

这个需要修改一个程序文件 lib_goods.php
实现在文件末尾添加一个函数

    function get_buy_sum($goods_id)
     
    {
     
    $sql = "select sum(goods_number) from " . $GLOBALS['ecs']->table('order_goods') . " AS g ,".$GLOBALS['ecs']->table('order_info') . " AS o WHERE o.order_id=g.order_id and g.goods_id = " . $goods_id . "  and o.order_status=1 "  ;//o.order_status=1 表示确认了的订单才算
     
        return $GLOBALS['db']->getOne($sql);
     
    }

然后找到 在get_recommend_goods函数中 大致325行

    $goods[$idx]['url']          = build_uri('goods', array('gid' => $row['goods_id']), $row['goods_name']);

其后添加

    $goods[$idx]['buy_num']   = get_buy_sum($row['goods_id']);

剩下的就是通过在模板中用
{if $goods.buy_num}
{$goods.buy_num}
{else}
0
{/if}
调用了 

ECSHOP商品分类页：

修改 category.php 文件
在
$arr[$row['goods_id']]['goods_id']         = $row['goods_id'];
下增加
$sql="selectNULL(goods_number),0) from ". $GLOBALS['ecs']->table('order_goods') . " AS og , ". $GLOBALS['ecs']->table('order_info') ." AS o where o.order_id =og.order_id and o.order_status >0 and og.goods_id=".$row['goods_id'];
                $arr[$row['goods_id']]['count_sell']=$GLOBALS['db']->getOne($sql);

然后修改 library/goods_list.lbi
在你想显示购买数量的地方加入下面代码：
销售数量：{$goods.count_sell}