使用SwiftMailer getting发送文件

composer require swiftmailer/swiftmailer

require_once 'path/to/vendor/autoload.php';

// 创建邮件实例
$mailer = new Swift_Mailer(new Swift_SmtpTransport('smtp.example.com', 587));
$message = new Swift_Message();

$message->setFrom(['sender@example.com' => 'Sender Name']);
$message->setTo(['recipient@example.com' => 'Recipient Name']);
$message->setSubject('Email Subject');
$message->setBody('Email Content');

$attachment = Swift_Attachment::fromPath('path/to/file.pdf');
$message->attach($attachment);

$result = $mailer->send($message);