/**
  * 获得购物车中商品的总重量、总价格、总数量
  *
  * @access  public
  * @param   int     $type   类型：默认普通商品
  * @return  array
  */
 function cart_weight_price($type = CART_GENERAL_GOODS)
 {
     $package_row['weight'] = 0;
     $package_row['amount'] = 0;
     $package_row['number'] = 0;
     $packages_row['free_shipping'] = 1;
     /* 获得购物车中非超值礼包商品的总重量 */
     $sql = 'SELECT SUM(g.goods_weight * c.goods_number) AS weight, ' . 'SUM(c.goods_price * c.goods_number) AS amount, ' . 'SUM(c.goods_number) AS number ' . 'FROM ' . $this->pre . 'cart AS c ' . 'LEFT JOIN ' . $this->pre . 'goods AS g ON g.goods_id = c.goods_id ' . "WHERE c.session_id = '" . SESS_ID . "' " . "AND rec_type = '{$type}' AND g.is_shipping = 0";
     $row = $this->row($sql);
     $packages_row['weight'] = floatval($row['weight']) + $package_row['weight'];
     $packages_row['amount'] = floatval($row['amount']) + $package_row['amount'];
     $packages_row['number'] = intval($row['number']) + $package_row['number'];
     /* 格式化重量 */
     $packages_row['formated_weight'] = formated_weight($packages_row['weight']);
     return $packages_row;
 }

/**
 * 获得购物车中商品的总重量、总价格、总数量
 *
 * @access  public
 * @param   int     $type   类型：默认普通商品
 * @return  array
 */
function cart_weight_price($type = CART_GENERAL_GOODS)
{
    $package_row['weight'] = 0;
    $package_row['amount'] = 0;
    $package_row['number'] = 0;
    $packages_row['free_shipping'] = 1;
    /* 计算超值礼包内商品的相关配送参数 */
    $sql = 'SELECT goods_id, goods_number, goods_price FROM ' . $GLOBALS['ecs']->table('cart') . " WHERE extension_code = 'package_buy' AND session_id = '" . SESS_ID . "'";
    $row = $GLOBALS['db']->getAll($sql);
    if ($row) {
        $packages_row['free_shipping'] = 0;
        $free_shipping_count = 0;
        foreach ($row as $val) {
            // 如果商品全为免运费商品，设置一个标识变量
            $sql = 'SELECT count(*) FROM ' . $GLOBALS['ecs']->table('package_goods') . ' AS pg, ' . $GLOBALS['ecs']->table('goods') . ' AS g ' . "WHERE g.goods_id = pg.goods_id AND g.is_shipping = 0 AND pg.package_id = '" . $val['goods_id'] . "'";
            $shipping_count = $GLOBALS['db']->getOne($sql);
            if ($shipping_count > 0) {
                // 循环计算每个超值礼包商品的重量和数量，注意一个礼包中可能包换若干个同一商品
                $sql = 'SELECT SUM(g.goods_weight * pg.goods_number) AS weight, ' . 'SUM(pg.goods_number) AS number FROM ' . $GLOBALS['ecs']->table('package_goods') . ' AS pg, ' . $GLOBALS['ecs']->table('goods') . ' AS g ' . "WHERE g.goods_id = pg.goods_id AND g.is_shipping = 0 AND pg.package_id = '" . $val['goods_id'] . "'";
                $goods_row = $GLOBALS['db']->getRow($sql);
                $package_row['weight'] += floatval($goods_row['weight']) * $val['goods_number'];
                $package_row['amount'] += floatval($val['goods_price']) * $val['goods_number'];
                $package_row['number'] += intval($goods_row['number']) * $val['goods_number'];
            } else {
                $free_shipping_count++;
            }
        }
        $packages_row['free_shipping'] = $free_shipping_count == count($row) ? 1 : 0;
    }
    /* 获得购物车中非超值礼包商品的总重量 */
    $sql = 'SELECT SUM(g.goods_weight * c.goods_number) AS weight, ' . 'SUM(c.goods_price * c.goods_number) AS amount, ' . 'SUM(c.goods_number) AS number ' . 'FROM ' . $GLOBALS['ecs']->table('cart') . ' AS c ' . 'LEFT JOIN ' . $GLOBALS['ecs']->table('goods') . ' AS g ON g.goods_id = c.goods_id ' . "WHERE c.session_id = '" . SESS_ID . "' " . "AND rec_type = '{$type}' AND g.is_shipping = 0 AND c.extension_code != 'package_buy'";
    $row = $GLOBALS['db']->getRow($sql);
    $packages_row['weight'] = floatval($row['weight']) + $package_row['weight'];
    $packages_row['amount'] = floatval($row['amount']) + $package_row['amount'];
    $packages_row['number'] = intval($row['number']) + $package_row['number'];
    /* 格式化重量 */
    $packages_row['formated_weight'] = formated_weight($packages_row['weight']);
    return $packages_row;
}

/**
 * 获得购物车中商品的总重量、总价格、总数量
 *
 * @access  public
 * @param   int     $type   类型：默认普通商品
 * @return  array
 */
function cart_weight_price($type = CART_GENERAL_GOODS)
{
    /* 获得购物车中商品的总重量 */
    $sql = 'SELECT SUM(g.goods_weight * c.goods_number) AS weight, ' . 'SUM(c.goods_price * c.goods_number) AS amount, ' . 'SUM(c.goods_number) AS number ' . 'FROM ' . $GLOBALS['ecs']->table('cart') . ' AS c ' . 'LEFT JOIN ' . $GLOBALS['ecs']->table('goods') . ' AS g ON g.goods_id = c.goods_id ' . "WHERE c.session_id = '" . SESS_ID . "' " . "AND rec_type = '{$type}'";
    $row = $GLOBALS['db']->getRow($sql);
    $row['weight'] = floatval($row['weight']);
    $row['amount'] = floatval($row['amount']);
    $row['number'] = intval($row['number']);
    /* 格式化重量 */
    $row['formated_weight'] = formated_weight($row['weight']);
    return $row;
}