【EC-CUBE2.13.3】商品別送料設定で０円設定されている商品が含まれる注文は送料無料にする

SC_CartSession_Ex.php

<?php
/*
 * This file is part of EC-CUBE
 *
 * Copyright(c) 2000-2014 LOCKON CO.,LTD. All Rights Reserved.
 *
 * http://www.lockon.co.jp/
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

require_once CLASS_REALDIR . 'SC_CartSession.php';

class SC_CartSession_Ex extends SC_CartSession
{
    /**
     * カートの内容を計算する.
     *
     * カートの内容を計算し, 下記のキーを保持する連想配列を返す.
     *
     * - tax: 税額
     * - subtotal: カート内商品の小計
     * - deliv_fee: カート内商品の合計送料
     * - total: 合計金額
     * - payment_total: お支払い合計
     * - add_point: 加算ポイント
     *
     * @param integer       $productTypeId 商品種別ID
     * @param SC_Customer   $objCustomer   ログイン中の SC_Customer インスタンス
     * @param integer       $use_point     今回使用ポイント
     * @param integer|array $deliv_pref    配送先都道府県ID.
     *                                   複数に配送する場合は都道府県IDの配列
     * @param  integer $charge           手数料
     * @param  integer $discount         値引き
     * @param  integer $deliv_id         配送業者ID
     * @param  integer $order_pref       注文者の都道府県ID
     * @param  integer $order_country_id 注文者の国
     * @return array   カートの計算結果の配列
     */
    public function calculate($productTypeId, &$objCustomer, $use_point = 0,
        $deliv_pref = '', $charge = 0, $discount = 0, $deliv_id = 0,
        $order_pref = 0, $order_country_id = 0
    ) {

        $results = array();
        $total_point = $this->getAllProductsPoint($productTypeId);
        // MEMO: 税金計算は注文者の住所基準
        $results['tax'] = $this->getAllProductsTax($productTypeId, $order_pref, $order_country_id);
        $results['subtotal'] = $this->getAllProductsTotal($productTypeId, $order_pref, $order_country_id);
        $results['deliv_fee'] = 0;

        // 商品ごとの送料を加算
        $isDelivFeeFree = false;// 商品送料無料フラグ
        if (OPTION_PRODUCT_DELIV_FEE == 1) {
            $cartItems = $this->getCartList($productTypeId);
            foreach ($cartItems as $arrItem) {
                if (!is_null($arrItem['productsClass']['deliv_fee']) && $arrItem['productsClass']['deliv_fee'] == 0) {
                        $isDelivFeeFree = true; // 商品送料0円設定の場合true
                }
                $results['deliv_fee'] += $arrItem['productsClass']['deliv_fee'] * $arrItem['quantity'];
            }
        }

        // 配送業者の送料を加算
        if($isDelivFeeFree){
                // 送料0円設定の商品がみつかったら全体の送料を0円にする
                $results['deliv_fee'] = 0;
        }else{
                if (OPTION_DELIV_FEE == 1
                        && !SC_Utils_Ex::isBlank($deliv_pref)
                        && !SC_Utils_Ex::isBlank($deliv_id)) {
                                $results['deliv_fee'] += SC_Helper_Delivery_Ex::getDelivFee($deliv_pref, $deliv_id);
                }
        }

        // 送料無料チェック
        if ($this->isDelivFree($productTypeId)) {
            $results['deliv_fee'] = 0;
        }

        // 合計を計算
        $results['total'] = $results['subtotal'];
        $results['total'] += $results['deliv_fee'];
        $results['total'] += $charge;
        $results['total'] -= $discount;

        // お支払い合計
        $results['payment_total'] = $results['total'] - $use_point * POINT_VALUE;

        // 加算ポイントの計算
        if (USE_POINT !== false) {
            $results['add_point'] = SC_Helper_DB_Ex::sfGetAddPoint($total_point, $use_point);
            if ($objCustomer != '') {
                // 誕生日月であった場合
                if ($objCustomer->isBirthMonth()) {
                    $results['birth_point'] = BIRTH_MONTH_POINT;
                    $results['add_point'] += $results['birth_point'];
                }
            }
            if ($results['add_point'] < 0) {
                $results['add_point'] = 0;
            }
        }

        return $results;
    }
}