php中通过smtp发邮件的类,测试通过

<?php
class smtp
{
    /* public variables */
    var $smtp_port;
    var $time_out;
    var $host_name;
    var $log_file;
    var $relay_host;
    var $debug;
    var $auth;
    var $user;
    var $pass;

    /* private variables */ 
    var $sock;

    /* constractor */
    function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)
    {
        $this->debug = false;
        $this->smtp_port = $smtp_port;
        $this->relay_host = $relay_host;
        $this->time_out = 30; //is used in fsockopen() 
        $this->auth = $auth;//auth
        $this->user = $user;
        $this->pass = $pass;
        $this->host_name = "localhost"; //is used in helo command 
        $this->log_file = "";
        $this->sock = false;
}

    /* main function */
    function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
    {
        $mail_from = $this->get_address($this->strip_comment($from));
        $body = ereg_replace("(^|(\r\n))(\.)", "\1.\3", $body);
        $header .= "mime-version:1.0\r\n";
        if($mailtype=="html")
        {
            $header .= "content-type:text/html\r\n";
        }
        $header .= "to: ".$to."\r\n";
        if ($cc != "") 
        {
            $header .= "cc: ".$cc."\r\n";
        }
        $header .= "from: $from<".$from.">\r\n";
        $header .= "subject: ".$subject."\r\n";
        $header .= $additional_headers;
        $header .= "date: ".date("r")."\r\n";
        $header .= "x-mailer:by redhat (php/".phpversion().")\r\n";
        list($msec, $sec) = explode(" ", microtime());
        $header .= "message-id: <".date("ymdhis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";
        $to = explode(",", $this->strip_comment($to));

        if ($cc != "") 
        {
            $to = array_merge($to, explode(",", $this->strip_comment($cc)));
            }
        if ($bcc != "") 
        {
            $to = array_merge($to, explode(",", $this->strip_comment($bcc)));
        }
        $sent = true;
        foreach ($to as $rcpt_to) 
        {
            $rcpt_to = $this->get_address($rcpt_to);
            if (!$this->smtp_sockopen($rcpt_to)) 
            {
                $this->log_write("error: cannot send email to ".$rcpt_to."\n");
                $sent = false;
                continue;
            }
            if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) 
            {
                $this->log_write("e-mail has been sent to <".$rcpt_to.">\n");
            } 
            else 
            {
                $this->log_write("error: cannot send email to <".$rcpt_to.">\n");
                $sent = false;
            }
            fclose($this->sock);
            $this->log_write("disconnected from remote host\n");
        }
        return $sent;
    }

    /* private functions */
    function smtp_send($helo, $from, $to, $header, $body = "")
    {
        if (!$this->smtp_putcmd("helo", $helo)) 
        {
            return $this->smtp_error("sending helo command");
        }

        #auth
        if($this->auth)
        {
            if (!$this->smtp_putcmd("auth login", base64_encode($this->user))) 
            {
                return $this->smtp_error("sending helo command");
            }
            if (!$this->smtp_putcmd("", base64_encode($this->pass))) 
            {
                return $this->smtp_error("sending helo command");
            }
        }
        if (!$this->smtp_putcmd("mail", "from:<".$from.">")) 
        {
            return $this->smtp_error("sending mail from command");
        }
        if (!$this->smtp_putcmd("rcpt", "to:<".$to.">")) 
        {
            return $this->smtp_error("sending rcpt to command");
        }
        if (!$this->smtp_putcmd("data"))
        {
            return $this->smtp_error("sending data command");
        }
        if (!$this->smtp_message($header, $body)) 
        {
            return $this->smtp_error("sending message");
        }
        if (!$this->smtp_eom())
        {
            return $this->smtp_error("sending <cr><lf>.<cr><lf> [eom]");
        }
        if (!$this->smtp_putcmd("quit")) 
        {
            return $this->smtp_error("sending quit command");
        }
        return true;
    }

    function smtp_sockopen($address)
    {
        if ($this->relay_host == "") 
        {
            return $this->smtp_sockopen_mx($address);
        } 
        else
        {
            return $this->smtp_sockopen_relay();
        }
    }

    function smtp_sockopen_relay()
    {
        $this->log_write("trying to ".$this->relay_host.":".$this->smtp_port."\n");
        $this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
        if (!($this->sock && $this->smtp_ok())) 
        {
            $this->log_write("error: cannot connenct to relay host ".$this->relay_host."\n");
            $this->log_write("error: ".$errstr." (".$errno.")\n");
            return false;
        }
        $this->log_write("connected to relay host ".$this->relay_host."\n");
        return true;;
    }

    function smtp_sockopen_mx($address)
    {
        $domain = ereg_replace("^.+@([^@]+)$", "\1", $address);
        if (!@getmxrr($domain, $mxhosts)) 
        {
            $this->log_write("error: cannot resolve mx \"".$domain."\"\n");
            return false;
        }
        foreach ($mxhosts as $host) 
        {
            $this->log_write("trying to ".$host.":".$this->smtp_port."\n");
            $this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
            if (!($this->sock && $this->smtp_ok())) 
            {
                $this->log_write("warning: cannot connect to mx host ".$host."\n");
                $this->log_write("error: ".$errstr." (".$errno.")\n");
                continue;
            }
            $this->log_write("connected to mx host ".$host."\n");
            return true;
        }
        $this->log_write("error: cannot connect to any mx hosts (".implode(", ", $mxhosts).")\n");
        return false;
    }

    function smtp_message($header, $body)
    {
        fputs($this->sock, $header."\r\n".$body);
        $this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));
        return true;
    }

    function smtp_eom()
    {
        fputs($this->sock, "\r\n.\r\n");
        $this->smtp_debug(". [eom]\n");
        return $this->smtp_ok();
    }

    function smtp_ok()
    {
        $response = str_replace("\r\n", "", fgets($this->sock, 512));
        $this->smtp_debug($response."\n");
        if (!ereg("^[23]", $response)) 
        {
            fputs($this->sock, "quit\r\n");
            fgets($this->sock, 512);
            $this->log_write("error: remote host returned \"".$response."\"\n");
            return false;
        }
        return true;
    }

    function smtp_putcmd($cmd, $arg = "")
    {
        if ($arg != "") 
        {
            if($cmd=="") 
            {
                $cmd = $arg;
            }
            else
            {
                $cmd = $cmd." ".$arg;
            }
        }
        fputs($this->sock, $cmd."\r\n");
        $this->smtp_debug("> ".$cmd."\n");
        return $this->smtp_ok();
    }

    function smtp_error($string)
    {
        $this->log_write("error: error occurred while ".$string.".\n");
        return false;
    }

    function log_write($message)
    {
        $this->smtp_debug($message);
        if ($this->log_file == "")
        {
            return true;
        }
        $message = date("m d h:i:s ").get_current_user()."[".getmypid()."]: ".$message;
        if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) 
        {
            $this->smtp_debug("warning: cannot open log file \"".$this->log_file."\"\n");
            return false;;
        }
        flock($fp, lock_ex);
        fputs($fp, $message);
        fclose($fp);
        return true;
    }

    function strip_comment($address)
    {
        $comment = "\([^()]*\)";
        while (ereg($comment, $address)) 
        {
            $address = ereg_replace($comment, "", $address);
        }
        return $address;
    }

    function get_address($address)
    {
        $address = ereg_replace("([ \t\r\n])+", "", $address);
        $address = ereg_replace("^.*<(.+)>.*$", "\1", $address);
        return $address;
    }

    function smtp_debug($message)
    {
        if ($this->debug) 
        {
            echo $message;
        }
    }

}
?>

<?php
/*
这是一个测试程序!!!
*/
require("smtp.php");
##########################################
$smtpserver = "smtp.163.com";//smtp服务器
$smtpserverport = 25;//smtp服务器端口
$smtpusermail = "reterry123@163.com";//smtp服务器的用户邮箱
$smtpemailto = "dxytools@gmail.com";//发送给谁
$smtpuser = "reterry123";//smtp服务器的用户帐号
$smtppass = "014040001";//smtp服务器的用户密码
$mailsubject = "中文";//邮件主题
$mailbody = "<h1>中文</h1>测试下能淤泥新年感";//邮件内容
$mailtype = "html";//邮件格式（html/txt）,txt为文本邮件
##########################################
$smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);//这里面的一个true是表示使用身份验证,否则不使用身份验证.
$smtp->debug = true;//是否显示发送的调试信息
$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);
?>