PHPで開発した中古リサイクルサイトがオンライン返金機能に対応

// 连接数据库
$db = new PDO("mysql:host=localhost;dbname=test", "username", "password");

// 创建transactions数据表
$sql = "CREATE TABLE transactions (
    id INT(11) AUTO_INCREMENT PRIMARY KEY,
    amount DECIMAL(10,2) NOT NULL,
    buyer VARCHAR(255) NOT NULL,
    seller VARCHAR(255) NOT NULL,
    refund_status INT(1) DEFAULT 0
)";
$db->exec($sql);

// 处理退款申请表单
if($_SERVER["REQUEST_METHOD"] == "POST") {
    $refundAmount = $_POST["refund_amount"];
    $transactionId = $_POST["transaction_id"];

    // 进行退款处理，可以根据具体业务逻辑实现
    if($refundAmount > 0 && !empty($transactionId)) {
        $sql = "UPDATE transactions SET refund_status = 1 WHERE id = :transactionId";
        $stmt = $db->prepare($sql);
        $stmt->bindParam(":transactionId", $transactionId);
        $stmt->execute();
        
        // 其他退款操作，比如向卖家发起退款请求，更新账户余额等
    } else {
        echo "退款金额或交易编号不能为空";
    }
}

// 查询退款申请列表
$sql = "SELECT * FROM transactions WHERE refund_status = 1";
$stmt = $db->query($sql);
$refundRequests = $stmt->fetchAll(PDO::FETCH_ASSOC);

// 展示退款申请
foreach($refundRequests as $refundRequest) {
    echo "交易编号：" . $refundRequest["id"] . "<br>";
    echo "退款金额：" . $refundRequest["amount"] . "<br>";
    echo "购买者：" . $refundRequest["buyer"] . "<br>";
    echo "卖家：" . $refundRequest["seller"] . "<br>";
    echo "<a href='process_refund.php?id=" . $refundRequest["id"] . "'>处理退款</a>";
    echo "<br><br>";
}