php 普通会员实名认证后才能买一单任产品 上级是消费商才能领 只有5个下级名额可以领。开通消费商之后满一个月才能购买运费单只能下任何产品一单再满一个才能继续。可以买11次。实例代码

以下是一个实例代码，实现了上述要求的购买逻辑：

class User {
    private $isRealNameVerified; // 是否实名认证
    private $isMerchant; // 是否消费商
    private $isFreightOrderAllowed; // 是否允许购买运费单
    private $productCount; // 已购买产品数量
    private $subordinateCount; // 下级名额数量

    public function __construct() {
        $this->isRealNameVerified = false;
        $this->isMerchant = false;
        $this->isFreightOrderAllowed = false;
        $this->productCount = 0;
        $this->subordinateCount = 5;
    }

    public function verifyRealName() {
        // 实名认证逻辑
        $this->isRealNameVerified = true;
    }

    public function becomeMerchant() {
        // 成为消费商逻辑
        $this->isMerchant = true;
    }

    public function canPurchaseProduct() {
        if ($this->isRealNameVerified && $this->isMerchant && $this->subordinateCount > 0) {
            return true;
        }
        return false;
    }

    public function purchaseProduct() {
        if ($this->canPurchaseProduct()) {
            // 购买产品逻辑
            $this->productCount++;
            $this->subordinateCount--;
            
            if ($this->productCount % 11 == 0) {
                $this->isFreightOrderAllowed = false;
            } else {
                $this->isFreightOrderAllowed = true;
            }
            
            return true;
        }
        return false;
    }

    public function canPurchaseFreightOrder() {
        if ($this->isFreightOrderAllowed && $this->productCount >= 1) {
            return true;
        }
        return false;
    }
}

// 使用示例
$user = new User();
$user->verifyRealName();
$user->becomeMerchant();

if ($user->canPurchaseProduct()) {
    $user->purchaseProduct();
    echo "购买成功！";
} else {
    echo "无法购买！";
}

if ($user->canPurchaseFreightOrder()) {
    echo "允许购买运费单！";
} else {
    echo "不允许购买运费单！";
}

请注意，以上代码仅为示例，实际应用中可能需要根据具体需求进行适当调整