如何使用PHP在gmail中发送PDF附件文件？

<?php
require 'PHPMailer/PHPMailerAutoload.php';

// 创建PHPMailer实例
$mail = new PHPMailer;

// 配置SMTP服务器
$mail->isSMTP();
$mail->Host = 'smtp.gmail.com';
$mail->SMTPAuth = true;
$mail->Username = 'your-email@gmail.com';
$mail->Password = 'your-app-password';
$mail->SMTPSecure = 'tls';
$mail->Port = 587;

// 配置发件人和收件人
$mail->setFrom('your-email@gmail.com', 'Your Name');
$mail->addAddress('recipient@example.com', 'Recipient Name');

// 添加附件
$mail->addAttachment('path/to/your/file.pdf', 'file.pdf');

// 邮件内容
$mail->Subject = 'Email with PDF attachment';
$mail->Body = 'Please find the attached PDF file.';

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