ecshop计算各种价格函数

ecshop计算各种价格函数

function get_final_price($goods_id, $goods_num = '1', $is_spec_price = false, $spec = array()) {

$final_price = '0'; //商品最终购买价格

$volume_price = '0'; //商品优惠价格

$promote_price = '0'; //商品促销价格

$user_price = '0'; //商品会员价格

//取得商品优惠价格列表

$price_list = get_volume_price_list($goods_id, '1');

if (!empty($price_list))

{

foreach ($price_list as $value)

{

if ($goods_num >= $value['number'])

{

$volume_price = $value['price'];

}

}

}

//取得商品促销价格列表

/* 取得商品信息 */

$sql = "SELECT g.promote_price, g.promote_start_date, g.promote_end_date, ".

"IFNULL(https://www.360docs.net/doc/c25474267.html,er_price, g.shop_price * '" . $_SESSION['discount'] . "') AS shop_price ".

" FROM " .$GLOBALS['ecs']->table('goods'). " AS g ".

" LEFT JOIN " . $GLOBALS['ecs']->table('member_price') . " AS mp ".

"ON mp.goods_id = g.goods_id AND https://www.360docs.net/doc/c25474267.html,er_rank = '" . $_SESSION['user_rank']. "' ".

" WHERE g.goods_id = '" . $goods_id . "'" .

" AND g.is_delete = 0";

$goods = $GLOBALS['db']->getRow($sql);

/* 计算商品的促销价格 */

if ($goods['promote_price'] > 0)

{

$promote_price = bargain_price($goods['promote_price'], $goods['promote_start_date'], $goods['promote_end_date']);

}

else

{

$promote_price = 0;

}

//取得商品会员价格列表

$user_price = $goods['shop_price'];

//比较商品的促销价格，会员价格，优惠价格

if (empty($volume_price) && empty($promote_price))

{

//如果优惠价格，促销价格都为空则取会员价格

$final_price = $user_price;

}

elseif (!empty($volume_price) && empty($promote_price))

{

//如果优惠价格为空时不参加这个比较。

$final_price = min($volume_price, $user_price);

}

elseif (empty($volume_price) && !empty($promote_price))

{

//如果促销价格为空时不参加这个比较。

$final_price = min($promote_price, $user_price);

}

elseif (!empty($volume_price) && !empty($promote_price))

{

//取促销价格，会员价格，优惠价格最小值

$final_price = min($volume_price, $promote_price, $user_price); }

else

{

$final_price = $user_price;

}

//如果需要加入规格价格

if ($is_spec_price)

{

if (!empty($spec))

{

$spec_price = spec_price($spec);

$final_price += $spec_price;

}

}

//返回商品最终购买价格 return $final_price; }