php使用smtp服务发送邮件其次

$jieguo=$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);$smtpserver = "smtp.exmail.qq.com";//SMTP服务器$smtpserverport =25;//SMTP服务器端口$smtpusermail = "用户邮箱";//SMTP服务器的用户邮箱$smtpemailto = "发送给谁";//发送给谁$smtpuser = "SMTP服务器的用户帐号";//SMTP服务器的用户帐号$smtppass = "SMTP服务器的用户密码";//SMTP服务器的用户密码$mailsubject = iconv('UTF-8','GB2312', $row['subject']);//邮件主题$mailbody = iconv('UTF-8','GB2312', $row['message']);//邮件内容$mailtype = "TXT";//邮件格式（HTML/TXT）,TXT为文本邮件