如何使用SMTP发送邮件。Yii框架？

import smtplib
from email.mime.text import MIMEText

def send_email():
    # 配置SMTP服务器信息
    smtp_server = 'smtp.example.com'
    smtp_port = 25
    username = 'your_username'
    password = 'your_password'

    # 构造邮件内容
    subject = 'Hello'
    content = 'This is a test email.'
    sender = 'sender@example.com'
    receiver = 'receiver@example.com'
    message = MIMEText(content, 'plain')
    message['Subject'] = subject
    message['From'] = sender
    message['To'] = receiver

    # 发送邮件
    try:
        smtp_obj = smtplib.SMTP(smtp_server, smtp_port)
        smtp_obj.login(username, password)
        smtp_obj.sendmail(sender, receiver, message.as_string())
        smtp_obj.quit()
        print('Email sent successfully!')
    except smtplib.SMTPException as e:
        print('Failed to send email:', str(e))

# 调用发送邮件函数
send_email()

use Yii;
use yii\mail\MailerInterface;
use yii\mail\MessageInterface;

class MailController extends yii\web\Controller
{
    public function actionSend()
    {
        // 获取邮件发送组件
        $mailer = Yii::$app->mailer;

        // 构造邮件内容
        $subject = 'Hello';
        $content = 'This is a test email.';
        $sender = 'sender@example.com';
        $receiver = 'receiver@example.com';

        // 发送邮件
        try {
            $message = $mailer->compose()
                ->setTo($receiver)
                ->setFrom($sender)
                ->setSubject($subject)
                ->setTextBody($content)
                ->send();

            if ($message instanceof MessageInterface) {
                echo 'Email sent successfully!';
            } else {
                echo 'Failed to send email.';
            }
        } catch (\Exception $e) {
            echo 'Failed to send email:', $e->getMessage();
        }
    }
}