ecshop怎么在商品详细页显示已售数量和评论数量

ecshop如何在商品详细页显示已售数量和评论数量
ecshop增加已售数量和评论数量很简单，步骤如下：

1.在ecshop程序goods.php页面最下面加入这两个函数
function get_buy_sum($goods_id)
{
    $sql = 'SELECT IFNULL(SUM(g.goods_number), 0) ' .
        'FROM ' . $GLOBALS['ecs']->table('order_info') . ' AS o, ' .
            $GLOBALS['ecs']->table('order_goods') . ' AS g ' .
        "WHERE o.order_id = g.order_id " .
        "AND o.order_status = '" . OS_CONFIRMED . "' " .
        "AND o.shipping_status " . db_create_in(array(SS_SHIPPED, SS_RECEIVED)) .
        " AND o.pay_status " . db_create_in(array(PS_PAYED, PS_PAYING)) .
        " AND g.goods_id = '$goods_id'";
    return $GLOBALS['db']->getOne($sql);
}

function get_comment_num($goods_id) {
     $sql= "select count(*) from ".$GLOBALS['ecs']->table('comment').' where id_value='".$goods_id."' AND status = 1";
     return $GLOBALS['db']->getOne($sql);
}

2.在ecshop程序goods.php中加入
$smarty->assign('buy_num',get_buy_sum($goods_id));
$smarty->assign('comment_num',get_comment_num($goods_id));

3.ecshop中goods.dwt模板中加入如下代码：

<li class="clearfix">
<dd>
<strong>累计售出：</strong>{$buy_num}
</dd>
</li>


<li class="clearfix">
<dd>
<strong>评论数量：</strong><a href="#comment">{$comment_num}</a>
</dd>
</li>

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ecshop怎么在商品详细页显示已售数量和评论数量

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