php内置函数使用 compact()

    /**
     * 获取购物车的价格详情
     * @param $cartList|购物车列表
     * @return array
     */
    public function getCartPriceInfo($cartList = null) {
        $total_fee = $goods_fee = $goods_num = 0; //初始化数据。商品总额/节约金额/商品总共数量
        if ($cartList) {
            foreach ($cartList as $cartKey => $cartItem) {
                $total_fee += $cartItem['goods_fee'];
                $goods_fee += $cartItem['cut_fee'];
                $goods_num += $cartItem['goods_num'];
            }
        }
        $result = array(
            'total_fee' => $total_fee,
            'goods_fee' => $goods_fee,
            'goods_num' => $goods_num,
        );
        return $result;
    }

    /**
     * 获取购物车的价格详情
     * @param $cartList|购物车列表
     * @return array
     */
    public function getCartPriceInfo($cartList = null){
        $total_fee = $goods_fee = $goods_num = 0;//初始化数据。商品总额/节约金额/商品总共数量
        if($cartList){
            foreach ($cartList as $cartKey => $cartItem) {
                $total_fee += $cartItem['goods_fee'];
                $goods_fee += $cartItem['cut_fee'];
                $goods_num += $cartItem['goods_num'];
            }
        }
        return compact('total_fee', 'goods_fee', 'goods_num');
    }