$mail = new phpmailer; $mail->issmtp(); $mail->host = 'smtp.163.com'; $mail->smtpauth = true;$mail->charset='utf-8'; $mail->username = 'xxxx@163.com'; $mail->password = 'xxx'; $mail->port = 25; $mail->from = 'xxxx@163.com'; $mail->fromname = 'xxxx'; $mail->addaddress('xxx@qq.com'); $mail->wordwrap = 50; $mail->ishtml(true); $mail->subject = '发送邮件测试';$mail->body = 'xxxx';if(!$mail->send()) { echo '邮件发送失败.'; echo '错误信息: ' . $mail->errorinfo;} else { echo '邮件发送成功';}

回复内容： $mail = new phpmailer; $mail->issmtp(); $mail->host = 'smtp.163.com'; $mail->smtpauth = true;$mail->charset='utf-8'; $mail->username = 'xxxx@163.com'; $mail->password = 'xxx'; $mail->port = 25; $mail->from = 'xxxx@163.com'; $mail->fromname = 'xxxx'; $mail->addaddress('xxx@qq.com'); $mail->wordwrap = 50; $mail->ishtml(true); $mail->subject = '发送邮件测试';$mail->body = 'xxxx';if(!$mail->send()) { echo '邮件发送失败.'; echo '错误信息: ' . $mail->errorinfo;} else { echo '邮件发送成功';}

https://github.com/kokororin/posutoba/tree/master/src/system/library/vendor/phpmailer
vendor('phpmailer.phpmailerautoload');$mail = new \phpmailer();
用thinkphp框架的吧，把smtp那个类文件的命名空间改为和你的phpmailer类一样的命名空间就好了，前几天刚刚配置过