PHP发送电子邮件的代码

我们做网站的时候一定会用到发送电子邮件给用户的功能,以下是PHP发送电子邮件的代码,经过我的测试,是绝对可以使用的。

Smtp.php的代码:

<?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 = "")
    {
        $header = "";
        $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;
        }
    }
}

调用Stmp.php函数sendMail举例:

function sendMail($ip)
{
    include "Smtp.php";
    $smtpserver = "smtp.163.com"; //您的smtp服务器的地址 
    $port = 25; //smtp服务器的端口,一般是 25 
    $smtpuser = ""; //您登录smtp服务器的用户名 
    $smtppwd = ""; //您登录smtp服务器的密码 
    $mailtype = "TXT"; //邮件的类型,可选值是 TXT 或 HTML ,TXT 表示是纯文本的邮件,HTML 表示是 html格式的邮件 
    $sender = "";
    //发件人,一般要与您登录smtp服务器的用户名($smtpuser)相同,否则可能会因为smtp服务器的设置导致发送失败 
    $smtp = new smtp($smtpserver, $port, true, $smtpuser, $smtppwd, $sender);
    $smtp->debug = true; //是否开启调试,只在测试程序时使用,正式使用时请将此行注释 
    $to = "wangzhiangtony@qq.com"; //收件人 
    $subject = "这是邮件主题";
    $body = "这是邮件内容";
    $send = $smtp->sendmail($to, $sender, $subject, $body, $mailtype);
    if ($send == 1) {
        echo "邮件发送成功";
    } else {
        echo "邮件发送失败";
    } 
}

 

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