分享个发邮件API 便于不支持smtp的虚拟空间使用

host = $host; $this->port = $port; $this->errno = $errno; $this->errstr = $errstr; $this->timeout = $timeout; $this->auth = $auth; $this->user = $user; $this->pass = $pass; $this->from = $from; } function send_mail_sock($subject,$message,$to,$from_name,$mailformat=0)//邮件标题,邮件内容,收件地址,邮件格式1=text|0=html,默认为0 { $host = $this->host; $port = $this->port; $errno = $this->errno; $errstr = $this->errstr; $timeout = $this->timeout; $auth = $this->auth; $user = $this->user; $pass = $this->pass; $from = $this->from; /* 1.创建sock，并打开连接 2.设置为阻塞模式 3.测试smtp应答码是否为220，220代表邮件服务就绪 4.发送用户身份验证，由用户设置 1=EHLO Host Domain \r\n 0=HELO Host Domain \r\n ?.读取服务器端发送给客户端的返回数据 smtp.163.com 发送的数据为： 250-PIPELINING//流水命令，告诉客户端可以一次发送多个命令来提高速度，在这里PHP 并没有使用，因为PHP单个文件的运行还是单线程的 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN 250 8BITMIME//得到这一行也就是smtp服务器发送结束了，等待客户端发送命令 5.发送AUTH LOGIN命令 6.发送用户名 7.发送密码 ?.身份验证过成功后后， 8.向服务器添加from 9.向服务器添加to 10.发送DATA命令,开始输入email数据,以"."号结束 11.书写邮件内容 12.将邮件内容发送到smtp服务器 13.发送QUIT命令，结束会话 */ $fp = fsockopen($host,$port,$errno,$errstr,$timeout);//打开sock的网络连接 if(!$fp){return '1.没有设置好smtp服务';} stream_set_blocking($fp, true);//设置为阻塞模式,此模式读不到数据则会停止在那 $mail_return=fgets($fp, 512);//读取512字节内容 if(substr($mail_return, 0, 3) != '220') {return $host.'-2.返回应答码为'.substr($mail_return, 0, 3);}//返回应答码所代表意思请参考'smtp协议.txt' fputs($fp, ($auth ? 'EHLO' : 'HELO')." ".$host."\r\n");//服务器标识用户身份 1=身份验证的标识,0=不需要身份验证的标识 $mail_return = fgets($fp, 512); if(substr($mail_return, 0, 3) != 220 && substr($mail_return, 0, 3) != 250) {return $host.'-3.返回应答码为'.substr($mail_return, 0, 3);} while(true) { $mail_return = fgets($fp, 512); if(substr($mail_return, 3, 1) != '-' || empty($mail_return)) {break;} } if($auth) { fputs($fp, "AUTH LOGIN\r\n"); $mail_return = fgets($fp, 512); if(substr($mail_return, 0, 3) != 334) {return $host.'-5.返回应答码为'.substr($mail_return, 0, 3);} fputs($fp, base64_encode($user)."\r\n"); $mail_return = fgets($fp, 512); if(substr($mail_return, 0, 3) != 334) {return $host.'-6.返回应答码为'.substr($mail_return, 0, 3).'user='.$user;} fputs($fp, base64_encode($pass)."\r\n"); $mail_return=fgets($fp, 512); if(substr($mail_return, 0, 3) != 235) {return $host.'-7.用户验证失败，应答码为'.substr($mail_return, 0, 3);} } //向服务器添加FROM and TO //------------------------------------------------------------------------------------------------------------------------ fputs($fp, "MAIL FROM: ".$from."\r\n");//有两种格式，MAIL FROM:xxx@xx.com和MAIL FROM:  $mail_return = fgets($fp, 512); if(substr($mail_return, 0, 3) != 250) { fputs($fp, "MAIL FROM: <".$from.">\r\n"); $mail_return = fgets($fp, 512); if(substr($mail_return, 0, 3) != 250) {return $host.'-8.返回应答码为'.substr($mail_return, 0, 3);} } foreach(explode(',', $to) as $mailto) { $mailto = trim($mailto); if($mailto) { fputs($fp, "RCPT TO: ".$mailto."\r\n"); $mail_return = fgets($fp, 512); if(substr($mail_return, 0, 3) != 250) { fputs($fp, "RCPT TO: <".$mailto.">\r\n"); $mail_return = fgets($fp, 512); if(substr($mail_return, 0, 3) != 250) {return $host.'-9.返回应答码为'.substr($mail_return, 0, 3);} } } } //------------------------------------------------------------------------------------------------------------------------ fputs($fp, "DATA\r\n");//开始输入email数据,以"."号结束 $mail_return = fgets($fp, 512); if(substr($mail_return, 0, 3) != 354) {return $host.'-10.返回应答码为'.substr($mail_return, 0, 3);} //邮件内容 //----------------------------------------------------------- $mail_message = "From:".$from_name.'<'.$from.">\r\n"; $mail_message .= "To:".$to."\r\n"; $mail_message .= "Subject:".str_replace("\n",' ',$subject)."\r\n"; if($mailformat==1) {$mail_message .= "Content-Type: text/html;\r\n"; } else {$mail_message .= "Content-Type: text/plain;\r\n";} // $mail_message .= "charset=gb2312\r\n\r\n"; $mail_message .= $message; $mail_message .= "\r\n.\r\n"; //----------------------------------------------------------- fputs($fp,$mail_message); fputs($fp,"QUIT\r\n"); return 1; } } ?>