經(jīng)常有客戶反應(yīng)，我這件商品利潤大 想讓用戶多抵扣一點積分，這件商品沒有利潤不想讓用戶用積分抵扣，對于這種需求，最簡單粗暴的方法就是把最高可抵扣積分?jǐn)?shù)量放在商品里面來設(shè)置。

假設(shè)A商品利潤空間大，我設(shè)置最高可抵扣50積分，B商品利潤空間少，我設(shè)置可抵扣10積分或設(shè)置0積分不給抵扣

二開地方

代碼：

/**
     * 使用積分
     * @param $useIntegral
     * @param $userInfo
     * @param $payPrice
     * @param $other
     * @return array
     */
    public function useIntegral(bool $useIntegral, $userInfo, string $payPrice, array $other, array $cartInfo = [])
    {
        /** @var UserBillServices $userBillServices */
        $userBillServices = app()->make(UserBillServices::class);
        // 可用積分
        $usable = bcsub((string)$userInfo['integral'], (string)$userBillServices->getBillSum(['uid' => $userInfo['uid'], 'is_frozen' => 1]), 0);

        $SurplusIntegral = $usable;
        if ($useIntegral && $userInfo['integral'] > 0 && $other['integralRatio'] > 0) {
            // 獲取商品最高可抵扣積分?jǐn)?shù)
            $integralMaxNum = 0;
            foreach ($cartInfo as $val) {
                $integralMaxNum = bcadd($integralMaxNum, bcmul($val['productInfo']['max_integral'], $val['cart_num']));
            }
            if ($integralMaxNum > 0 && $userInfo['integral'] > $integralMaxNum) {
                $integral = $integralMaxNum;
            } else {
                $integral = $userInfo['integral'];
            }
            if ($integralMaxNum <= 0) {
                // 給默認(rèn)后臺設(shè)置的抵扣積分
                $integral = sys_config('integral_max_num', 200);
            }
            $deductionPrice = (float)bcmul((string)$integral, (string)$other['integralRatio'], 2);
            if ($deductionPrice < $payPrice) {
                $payPrice = bcsub((string)$payPrice, (string)$deductionPrice, 2);
                $usedIntegral = $integral;
            } else {
                $deductionPrice = $payPrice;
                $usedIntegral = (int)ceil(bcdiv((string)$payPrice, (string)$other['integralRatio'], 2));
                $payPrice = 0;
            }
            $deductionPrice = $deductionPrice > 0 ? $deductionPrice : 0;
            $usedIntegral = $usedIntegral > 0 ? $usedIntegral : 0;
            $SurplusIntegral = (int)bcsub((string)$usable, $usedIntegral, 0);
        } else {
            $deductionPrice = 0;
            $usedIntegral = 0;
        }
        if ($payPrice <= 0) $payPrice = 0;
        return [$payPrice, $deductionPrice, $usedIntegral, $SurplusIntegral];
    }

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