PHP開發實務：使用PHPMailer傳送郵件到MySQL資料庫的用戶

<?php
$hostname = 'localhost';
$username = 'root';
$password = 'your_password';
$database = 'your_database';

$conn = new mysqli($hostname, $username, $password, $database);

if ($conn->connect_error) {
    die("连接失败：" . $conn->connect_error);
}

<?php
require 'PHPMailer.php';
require 'SMTP.php';

use PHPMailerPHPMailerPHPMailer;
use PHPMailerPHPMailerException;

// 创建PHPMailer对象
$mail = new PHPMailer(true);

try {
    // 配置SMTP服务器
    $mail->isSMTP();
    $mail->Host = 'smtp.example.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'your_username';
    $mail->Password = 'your_password';
    $mail->SMTPSecure = 'tls';
    $mail->Port = 587;

    // 设置邮件信息
    $mail->setFrom('from@example.com', 'Your Name');
    $mail->addAddress('to@example.com', 'Recipient Name');
    $mail->Subject = 'Test Email';
    $mail->Body = 'This is a test email sent using PHPMailer';

    // 发送邮件
    $mail->send();

    // 保存邮件信息到数据库
    $name = 'John Doe';
    $email = 'johndoe@example.com';
    
    $sql = "INSERT INTO users (name, email, created_at) VALUES ('$name', '$email', NOW())";
    $result = $conn->query($sql);
    
    if ($result) {
        echo '邮件发送成功，并已保存到数据库。';
    } else {
        echo '邮件发送成功，但保存到数据库失败。';
    }

} catch (Exception $e) {
    echo '邮件发送失败：' . $mail->ErrorInfo;
}

$conn->close();
?>