需要修改一个程序文件 lib_goods.php
今天只讲首页调用(及 最新 热门 热销中显示)其他地方显示 有需要的以后再共享给大家
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