php发送邮件

<?php
//smtp类
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 = preg_replace("'(^|(\r\n))(\.)'si", "\1.\3", $body);
        $header = "MIME-Version:1.0\r\n";

        $header .= "To: ".$to."\r\n";

        if ($cc != "") {
            $header .= "Cc: ".$cc."\r\n";
        }

        $header .= "From: <".$from.">\r\n";
        $header .= "Subject: ".$subject."\r\n";
        $header .= $additional_headers;
        $header .= "Date: ".date("r")."\r\n";
        $header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";
        if($mailtype=="HTML"){
              //$header .= "Content-Type:text/html\r\n";  
            $header .= "Content-Type:text/html;charset=\"gbk\"\r\n";
            //charset=\"gbk\" 中文
        }
        
        

        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()
    {
        $errno = 0;
        $errstr = "";
        $this->log_write("Trying to ".$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)
    {
        $errno=0;
        $errstr="";
        $domain = preg_replace("'^.+@([^@]+)$'si", "\1", $address);
        $MXHOSTS = array();
        if (!@getmxrr($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 (!preg_match("'^[23]'si", $response)) {
            fputs($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 = "'\([^()]*\)'si";
        while (preg_match($comment, $address)) {
            $address = preg_replace($comment, "", $address);
        }
        return $address;
    }

    function get_address($address)
    {
        $address = preg_replace("'([ \t\r\n])+'si", "", $address);
        $address = preg_replace("'^.*<(.+)>.*$'si", "\1", $address);
        return $address;
    }

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

//调用smtp类发送socket验证邮件

function postmail($to,$subject = "",$body = "", $mailtype){
    $body = preg_replace("'(^|(\r\n))(\.)'si", "\1.\3", $body);


    $smtpserver = "smtp.staff.hexun.com";                    #SMTP服务器地址
    $smtpserverport =25;                                    #SMTP服务器端口,E-mail是25
    $smtpusermail = "edge_noreply@staff.hexun.com";             #SMTP服务器的用户邮箱
    $smtpemailto = $to;                                        #发送给谁,逗号分隔可以多个        
    $smtpuser = "edge_noreply@staff.hexun.com";                                    #SMTP服务器的用户帐号
    $smtppass = "kv17ovxeoea}tNOw";                            #SMTP服务器的用户密码
    $mailsubject = $subject;                            #邮件标题
    $mailbody = $body;                                        #邮件内容

    $smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);
    #true 表示使用身份验证,否则不使用身份验证.
    
    $smtp->debug = FALSE;
    #是否显示发送的调试信息
    
    $send = $smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);
    #调用发送函数
    
    return $send;
}


define('LOCAL_IP', '127.0.0.1');

?>

require_once(dirname(__FILE__) . "/smtp.php");

$to = "xxx@xxx.com";
$subject = "[警告]xxx数据列表获取异常";
$mailtype = "HTML";
$body = '';

if (!$link) {
    $body = "Unable to connect or select mssql database!\n<br>";
    
    if (strlen($body) > 0) {
        $body .= "<br><br><br><br>[系统邮件,请勿回复此地址]\n";
            
        $return = postmail($to, $subject, $body , $mailtype);
    }
    die('Unable to connect or select database!\n');
}