ecshop中，有配件这个概念。而且ecshop中配件的概念就是．在增加录入该商品Ａ的时候，你可以录入a,b,c作为Ａ商品的配件。

　１：增加ecshop商品配件的方法

　后台->商品管理->增加新商品->配件．在这里你可以选择某个类别下面的商品。作为配件，而且还可以指定该配件的价格。

　2：因为出现了ecshop配件的问题，所以。在购买Ａ商品的时候，在购物车的下面，会出现该商品Ａ下的配件。而ecshop中产品Ａ的所有配件就存储在表group_goods中。里面存储了Ａ的ＩＤ，也存储了配件，a,b,c的ＩＤ．用来匹配的。

　３：配件，可以在购买Ａ的时候，计算出配件的价格。而并非配件产品本身的价格，从而可以利用配件，进行套餐的匹配．

　４：echop计算配件的价格函数分析

　function get_goods_fittings($goods_list = array())
{
$temp_index = 0;
$arr = array();

$sql = 'SELECT gg.parent_id, ggg.goods_name AS parent_name, gg.goods_id, gg.goods_price, g.goods_name, g.goods_thumb, g.goods_img, g.shop_price AS org_price, ' .
"IFNULL(mp.user_price, g.shop_price * '$_SESSION[discount]') AS shop_price ".
'FROM ' . $GLOBALS['ecs']->table('group_goods') . ' AS gg ' .
'LEFT JOIN ' . $GLOBALS['ecs']->table('goods') . 'AS g ON g.goods_id = gg.goods_id ' .
"LEFT JOIN " . $GLOBALS['ecs']->table('member_price') . " AS mp ".
"ON mp.goods_id = gg.goods_id AND mp.user_rank = '$_SESSION[user_rank]' ".
"LEFT JOIN " . $GLOBALS['ecs']->table('goods') . " AS ggg ON ggg.goods_id = gg.parent_id ".
"WHERE gg.parent_id " . db_create_in($goods_list) . " AND g.is_delete = 0 AND g.is_on_sale = 1 ".
"ORDER BY gg.parent_id, gg.goods_id";

$res = $GLOBALS['db']->query($sql);

while ($row = $GLOBALS['db']->fetchRow($res))
{
$arr[$temp_index]['parent_id'] = $row['parent_id'];//配件的基本件ID
$arr[$temp_index]['parent_name'] = $row['parent_name'];//配件的基本件的名称
$arr[$temp_index]['parent_short_name'] = $GLOBALS['_CFG']['goods_name_length'] > 0 ?
sub_str($row['parent_name'], $GLOBALS['_CFG']['goods_name_length']) : $row['parent_name'];//配件的基本件显示的名称
$arr[$temp_index]['goods_id'] = $row['goods_id'];//配件的商品ID
$arr[$temp_index]['goods_name'] = $row['goods_name'];//配件的名称
$arr[$temp_index]['short_name'] = $GLOBALS['_CFG']['goods_name_length'] > 0 ?
sub_str($row['goods_name'], $GLOBALS['_CFG']['goods_name_length']) : $row['goods_name'];//配件显示的名称
$arr[$temp_index]['fittings_price'] = price_format($row['goods_price']);//配件价格
$arr[$temp_index]['shop_price'] = price_format($row['shop_price']);//配件原价格
$arr[$temp_index]['goods_thumb'] = get_image_path($row['goods_id'], $row['goods_thumb'], true);
$arr[$temp_index]['goods_img'] = get_image_path($row['goods_id'], $row['goods_img']);
$arr[$temp_index]['url'] = build_uri('goods', array('gid'=>$row['goods_id']), $row['goods_name']);
$temp_index ++;
}

return $arr;
}

本函数中告诉我们，ecshop 配件的价格，是读了group_goods表中的goods_price字段的值．而放到购物车中的时候，也是通过该字段计算。那么，配件的价格，永远能体现出．基件和配件的关系。