Laravel发送邮件

public function mail(){
        $m3_email = new \stdClass();
        $m3_email->to = "254646295@qq.com";
        $m3_email->cc = ‘magina@speakez.cn‘;
        $m3_email->subject = ‘凯恩书店验证‘;
        $m3_email->content = ‘请于24小时点击该链接完成验证. http://book.magina.com/service/validate_email‘
            . ‘?member_id=‘ . 10001
            . ‘&code=‘ . Str::uuid();
        $flag  = Mail::send(‘email_register‘, [‘m3_email‘ => $m3_email], function ($m) use ($m3_email) {
            // $m->from(‘hello@app.com‘, ‘Your Application‘);
            $m->to($m3_email->to, ‘尊敬的用户‘)
                ->cc($m3_email->cc)
                ->subject($m3_email->subject);
        });
        return $flag ?‘发送成功‘:‘发送失败‘;
    }