如何使用PHP实现图像和附件在邮件中的嵌入？

composer require phpmailer/phpmailer

require 'vendor/autoload.php';

// 创建PHPMailer实例
$mailer = new PHPMailerPHPMailerPHPMailer();

// 配置SMTP
$mailer->isSMTP();
$mailer->Host = 'smtp.example.com';
$mailer->SMTPAuth = true;
$mailer->Username = 'you@example.com';
$mailer->Password = 'your-password';
$mailer->Port = 587;
$mailer->CharSet = 'UTF-8';

// 设置邮件信息
$mailer->setFrom('you@example.com', 'Your Name');
$mailer->addAddress('recipient@example.com', 'Recipient Name');
$mailer->Subject = 'Testing Email with Image and Attachment';
$mailer->Body = 'This is the body of the email.';
$mailer->AltBody = 'This is the plain text version of the email.';

// 添加嵌入图像
$mailer->addEmbeddedImage('/path/to/image.jpg', 'logo', 'logo.jpg');

// 在邮件的正文中使用cid引用该图像
$mailer->Body .= '<p><img src="cid:logo" alt="Logo"></p>';

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

// 发送邮件
if ($mailer->send()) {
    echo '邮件发送成功！';
} else {
    echo '邮件发送失败：' . $mailer->ErrorInfo;
}