使用 PHPMailer 实现邮件的实时发送

<?php
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
 
require 'path/to/PHPMailer/src/Exception.php';
require 'path/to/PHPMailer/src/PHPMailer.php';
require 'path/to/PHPMailer/src/SMTP.php';
 
$mail = new PHPMailer(true);
 
try {
    //Server settings
    $mail->isSMTP();                                         
    $mail->Host       = 'smtp.example.com';                   
    $mail->SMTPAuth   = true;                                 
    $mail->Username   = 'user@example.com';                   
    $mail->Password   = 'secret';                             
    $mail->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;          
    $mail->Port       = 465;                                  
 
    //Recipients
    $mail->setFrom('from@example.com', 'Mailer');
    $mail->addAddress('to@example.com', 'Joe User');          
 
    //Content
    $mail->isHTML(true);                                      
    $mail->Subject = 'Subject Text';
    $mail->Body    = 'Body Text';
    $mail->AltBody = 'This is the body in plain text for non-HTML mail clients';
 
    $mail->send();
    echo 'Message has been sent';
} catch (Exception $e) {
    echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";
}

确保替换 'path/to/PHPMailer/src/...' 为实际的路径，以及设置正确的 SMTP 服务器、用户凭据和端口。这段代码演示了如何使用 PHPMailer 发送一封 HTML 格式的电子邮件。