PHP를 사용하여 이메일을 보내는 방법은 무엇입니까?

composer require swiftmailer/swiftmailer

$transport = (new \Swift_SmtpTransport('smtp.gmail.com', 587))
    ->setUsername('your_gmail_address@gmail.com')
    ->setPassword('your_gmail_password');

$message = (new \Swift_Message())
    ->setFrom(['from_address@example.com' => 'From Name'])
    ->setTo(['to_address@example.com' => 'To Name'])
    ->setSubject('Email Subject')
    ->setBody('Email Body');

$mailer = new \Swift_Mailer($transport);

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

use Swift_Mailer;
use Swift_Message;
use Swift_SmtpTransport;

// 配置 SMTP 服务器
$transport = (new Swift_SmtpTransport('smtp.mailtrap.io', 2525))
    ->setUsername('your_mailtrap_username')
    ->setPassword('your_mailtrap_password');

// 创建邮件消息
$message = (new Swift_Message())
    ->setFrom(['from@example.com' => 'From Name'])
    ->setTo(['to@example.com' => 'To Name'])
    ->setSubject('Hello from PHP!')
    ->setBody('This is a simple email sent using PHP and Swift Mailer.');

// 创建邮件发送器
$mailer = new Swift_Mailer($transport);

// 发送邮件
$result = $mailer->send($message);

if ($result) {
    echo 'Email sent successfully.';
} else {
    echo 'There was an error sending the email.';
}