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php充值实现

2026-01-30 04:40:12PHP

PHP充值功能实现

PHP实现充值功能通常涉及前端表单提交、后端处理、数据库记录以及可能的第三方支付接口集成。以下是实现充值功能的关键步骤和代码示例。

充值表单设计

创建HTML表单用于用户输入充值金额和选择支付方式：

<form action="charge.php" method="post">
    <label for="amount">充值金额：</label>
    <input type="number" id="amount" name="amount" min="1" required>

    <label for="payment_method">支付方式：</label>
    <select id="payment_method" name="payment_method" required>
        <option value="alipay">支付宝</option>
        <option value="wechat">微信支付</option>
        <option value="bank">银行卡</option>
    </select>

    <button type="submit">立即充值</button>
</form>

后端处理逻辑

在charge.php中处理充值请求：

<?php
session_start();
require_once 'db_config.php'; // 数据库连接配置

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $amount = floatval($_POST['amount']);
    $paymentMethod = $_POST['payment_method'];
    $userId = $_SESSION['user_id']; // 假设用户已登录

    // 验证金额有效性
    if ($amount <= 0) {
        die("充值金额必须大于0");
    }

    // 记录充值订单
    $orderId = uniqid(); // 生成唯一订单号
    $createTime = date('Y-m-d H:i:s');

    try {
        $stmt = $pdo->prepare("INSERT INTO recharge_orders 
            (order_id, user_id, amount, payment_method, status, create_time) 
            VALUES (?, ?, ?, ?, 'pending', ?)");
        $stmt->execute([$orderId, $userId, $amount, $paymentMethod, $createTime]);

        // 根据支付方式跳转不同处理
        switch ($paymentMethod) {
            case 'alipay':
                header("Location: alipay_payment.php?order_id=$orderId&amount=$amount");
                break;
            case 'wechat':
                header("Location: wechat_payment.php?order_id=$orderId&amount=$amount");
                break;
            default:
                // 其他支付方式处理
                break;
        }
    } catch (PDOException $e) {
        die("订单创建失败: " . $e->getMessage());
    }
}
?>

数据库表结构

创建存储充值订单的表：

CREATE TABLE recharge_orders (
    id INT AUTO_INCREMENT PRIMARY KEY,
    order_id VARCHAR(50) NOT NULL UNIQUE,
    user_id INT NOT NULL,
    amount DECIMAL(10,2) NOT NULL,
    payment_method VARCHAR(20) NOT NULL,
    status ENUM('pending', 'completed', 'failed') DEFAULT 'pending',
    create_time DATETIME NOT NULL,
    complete_time DATETIME,
    FOREIGN KEY (user_id) REFERENCES users(id)
);

支付宝支付集成示例

使用支付宝官方SDK实现支付：

// alipay_payment.php
require_once 'alipay_sdk/config.php';
require_once 'alipay_sdk/pagepay/service/AlipayTradeService.php';
require_once 'alipay_sdk/pagepay/buildermodel/AlipayTradePagePayContentBuilder.php';

$orderId = $_GET['order_id'];
$amount = $_GET['amount'];

// 构造支付请求
$payRequestBuilder = new AlipayTradePagePayContentBuilder();
$payRequestBuilder->setBody("账户充值");
$payRequestBuilder->setSubject("用户充值");
$payRequestBuilder->setOutTradeNo($orderId);
$payRequestBuilder->setTotalAmount($amount);
$payRequestBuilder->setProductCode("FAST_INSTANT_TRADE_PAY");

$config = $alipayConfig;
$alipayService = new AlipayTradeService($config);

$response = $alipayService->pagePay(
    $payRequestBuilder,
    $config['return_url'],
    $config['notify_url']
);

// 输出支付表单
echo $response;

支付回调处理

处理支付完成后的回调通知：

// notify.php
require_once 'alipay_sdk/config.php';
require_once 'alipay_sdk/pagepay/service/AlipayTradeService.php';

$alipayService = new AlipayTradeService($alipayConfig);
$verifyResult = $alipayService->check($_POST);

if ($verifyResult) {
    $orderId = $_POST['out_trade_no'];
    $tradeStatus = $_POST['trade_status'];

    if ($tradeStatus == 'TRADE_SUCCESS') {
        // 更新订单状态
        $stmt = $pdo->prepare("UPDATE recharge_orders SET 
            status = 'completed', 
            complete_time = NOW() 
            WHERE order_id = ?");
        $stmt->execute([$orderId]);

        // 更新用户余额
        $stmt = $pdo->prepare("UPDATE users SET 
            balance = balance + (SELECT amount FROM recharge_orders WHERE order_id = ?) 
            WHERE id = (SELECT user_id FROM recharge_orders WHERE order_id = ?)");
        $stmt->execute([$orderId, $orderId]);
    }

    echo "success";
} else {
    echo "fail";
}