优化PHP中Stripe API调用以提升页面加载性能：策略与实践

// 示例：在用户表中存储订阅状态
CREATE TABLE users (
    id INT PRIMARY KEY AUTO_INCREMENT,
    email VARCHAR(255) UNIQUE,
    stripe_customer_id VARCHAR(255),
    subscription_status VARCHAR(50) DEFAULT 'inactive', -- active, canceled, past_due, etc.
    -- 其他用户字段
);

<?php
require_once('vendor/autoload.php'); // 引入Stripe PHP库

// 您的Stripe Webhook密钥
$webhookSecret = 'whsec_YOUR_WEBHOOK_SECRET';

$payload = @file_get_contents('php://input');
$sig_header = $_SERVER['HTTP_STRIPE_SIGNATURE'];
$event = null;

try {
    $event = \Stripe\Webhook::constructEvent(
        $payload, $sig_header, $webhookSecret
    );
} catch(\UnexpectedValueException $e) {
    // 无效的payload
    http_response_code(400);
    exit();
} catch(\Stripe\Exception\SignatureVerificationException $e) {
    // 无效的签名
    http_response_code(400);
    exit();
}

// 处理事件
switch ($event->type) {
    case 'customer.subscription.updated':
        $subscription = $event->data->object; // 获取订阅对象
        $customerId = $subscription->customer;
        $newStatus = $subscription->status;

        // 根据 $customerId 和 $newStatus 更新您的数据库
        // 确保使用事务以保证数据一致性
        try {
            // 假设您有一个数据库更新函数
            updateUserSubscriptionStatus($customerId, $newStatus);
            // 记录日志
            error_log("Subscription for customer {$customerId} updated to {$newStatus}");
        } catch (Exception $e) {
            // 处理数据库更新失败的情况
            error_log("Failed to update subscription for customer {$customerId}: " . $e->getMessage());
            http_response_code(500); // 返回服务器错误
            exit();
        }
        break;
    // 处理其他您关心的事件类型
    case 'customer.subscription.deleted':
        // ... 处理订阅删除
        break;
    default:
        // 未知事件类型
        error_log("Received unknown event type " . $event->type);
}

http_response_code(200); // 成功处理
?>

<?php
// ... 您的PHP代码

$startTime = microtime(true);

// 假设这是您的Stripe API调用，例如：
// $subscription = \Stripe\Subscription::retrieve('sub_...');
// 或者通过cURL发起请求
$ch = curl_init('https://api.stripe.com/v1/subscriptions/sub_...');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Authorization: Bearer sk_test_YOUR_SECRET_KEY',
    'Content-Type: application/x-www-form-urlencoded'
]);
$response = curl_exec($ch);
curl_close($ch);

$endTime = microtime(true);
$duration = ($endTime - $startTime) * 1000; // 转换为毫秒

error_log("Stripe API call took {$duration} ms.");

// ... 继续您的页面逻辑
?>