phpmailer 中文

$mail->CharSet = 'UTF-8';

$mail->Subject = '=?UTF-8?B?' . base64_encode('邮件主题') . '?=';
$mail->Body = '邮件正文内容';

<?php
require 'vendor/autoload.php';

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

$mail = new PHPMailer(true);

try {
    // 邮件服务器设置
    $mail->isSMTP();
    $mail->Host = 'smtp.example.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'your_email@example.com';
    $mail->Password = 'your_password';
    $mail->SMTPSecure = 'tls';
    $mail->Port = 587;

    // 发件人
    $mail->setFrom('from@example.com', 'Mailer');

    // 收件人
    $mail->addAddress('to@example.com', 'Receiver');

    // 邮件内容
    $mail->isHTML(true);
    $mail->CharSet = 'UTF-8';
    $mail->Subject = '=?UTF-8?B?' . base64_encode('邮件主题') . '?=';
    $mail->Body    = '邮件正文内容';

    // 发送邮件
    $mail->send();
    echo '邮件发送成功';
} catch (Exception $e) {
    echo "邮件发送失败: {$mail->ErrorInfo}";
}
?>