thinkphp如何实现邮箱修改密码

<?php
namespace app\index\controller;
use think\Controller;
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

class Email extends Controller{
    protected $module='index';
    protected $layout='public/layout';
    protected $namespace='app\index\controller';
    
    public function modifyPassword($email,$oldPassword,$newPassword){
        //新建PHPMailer对象
        $mail=new PHPMailer(true);
        
        //配置SMTP服务器信息
        $mail->isSMTP();
        $mail->SMTPAuth=true;
        $mail->SMTPSecure='ssl';
        $$mail->Host='smtp.gmail.com';
        $mail->Port=465;
        $mail->Username='xxxx@gmail.com';
        $mail->Password='xxxx';
        
        //配置邮件内容
        $mail->setFrom('xxxx@gmail.com','管理员');
        $mail->addAddress($email);
        $mail->Subject='修改密码';
        $mail->Body="您的当前密码是{$oldPassword}，新密码是{$newPassword}"；
        
        //发送邮件
        if(!$mail->send()){
            echo '邮件发送失败：' . $mail->ErrorInfo;
        }else{
            echo '邮件发送成功';
        }
    }
}