PHP send mail

 

<?php
class smtp
{
    private $smtp_port;
    private $time_out;
    private $host_name;
    private $log_file;
    private $relay_host;
    public $debug = false;
    private $auth;
    private $user;
    private $pass;
    private $sender;
    private $sock;

    function __construct($smtp_host, $smtp_user, $smtp_userpass, $sender, $smtp_port = 25, $auth = true)
    {
        $this->debug = FALSE;
        $this->smtp_port = $smtp_port;
        $this->relay_host = $smtp_host;
        $this->time_out = 30; //is used in fsockopen()
        $this->auth = $auth;//auth
        $this->user = $smtp_user;
        $this->pass = $smtp_userpass;
        $this->sender = $sender;
        $this->host_name = "localhost"; //is used in HELO command

        $this->log_file = "";
        $this->logs = "";
        $this->sock = FALSE;
    }

    function sendmail($from, $to, $subject = "", $body = "", $mailtype = "TXT", $cc = "", $bcc = "", $additional_headers = "")
    {
        $sent = TRUE;
        $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."/r/n";
        $header .= "Subject: ".$subject."/r/n";
        $header .= $additional_headers;
        $header .= "Date: ".date("r")."/r/n";
        $header .= "X-Mailer: mail.com (PHP/".phpversion().")/r/n";
        list($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)));
        }

        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 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 $this->smtp_error("sending AUTH command");
            }
            if (!$this->smtp_putcmd("", base64_encode($this->pass))) {
                return $this->smtp_error("sending AUTH command");
            }
        }
        #
        if (!$this->smtp_putcmd("MAIL", "FROM:<".$this->sender.">")) {
            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;
    }
   
    private function smtp_sockopen($address)
    {
        if ($this->relay_host == "") {
            return $this->smtp_sockopen_mx($address);
        } else {
            return $this->smtp_sockopen_relay();
        }
    }

    private 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;
    }

    private 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;
    }

    private 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;
    }

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

    private 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;
    }

    private 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();
    }

    private function smtp_error($string)
    {
        $this->log_write("Error: Error occurred while ".$string."./n");
        return FALSE;
    }

    private function log_write($message)
    {
        $this->logs .= $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;
    }

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

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

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

 

使用方式：

$smtp_host = 'mail.163.com';  //发信服务器
$smtp_user = '[e-mail]';  //用于发信认证的 email
$smtp_pass = '***';  //用于发信认证的 password
$smtp_port = 25;
$mail_format = 'HTML';  //或者 TXT ,信件的格式
$receiver = '[e-mail]';
$body = 'mail content';

$sm = new smtp($smtp_host, $smtp_user, $smtp_pass, $smtp_user, $smtp_port);
if($sm->sendmail($smtp_user, $receiver, 'Registration Validating', $body, $mail_format){
    echo 'Failed to send email.';
    exit;
}

摘自：http://topic.csdn.net/u/20080625/18/9023c74f-ac0e-430b-80bd-1f54beeffb65.html