尝试将vars传递给PHP邮件

$to = 'recipient@example.com';
$subject = 'Hello';
$message = 'This is an email with variables: Name: {name}, Age: {age}';
$headers = 'From: sender@example.com';

// 替换邮件内容中的变量
$message = str_replace('{name}', $name, $message);
$message = str_replace('{age}', $age, $message);

// 发送邮件
mail($to, $subject, $message, $headers);

require 'vendor/autoload.php'; // 引入PHPMailer库

// 创建一个新的PHPMailer实例
$mail = new PHPMailer\PHPMailer\PHPMailer();

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

// 设置发件人和收件人
$mail->setFrom('sender@example.com', 'Sender');
$mail->addAddress('recipient@example.com', 'Recipient');

// 设置邮件主题和内容
$mail->Subject = 'Hello';
$mail->Body = 'This is an email with variables: Name: {name}, Age: {age}';

// 替换邮件内容中的变量
$mail->Body = str_replace('{name}', $name, $mail->Body);
$mail->Body = str_replace('{age}', $age, $mail->Body);

// 发送邮件
if ($mail->send()) {
    echo 'Email sent successfully';
} else {
    echo 'Error sending email: ' . $mail->ErrorInfo;
}