用phpmail发送邮件，简单实现php发邮件功能！

摘要：发件人是我的邮箱收件人是我的邮箱当我点击发送的时候，我就会在我的邮箱的已发送列表看到一篇发送的邮件然后登陆邮箱就可以看到收件箱有一封刚刚发过来的邮件。

很多网站都开始有邮箱验证码验证了。
例如网站评论有人回复了，你就能立马收到邮件。
这些功能是如何实现的呢？
其实就是用php实现的，当然这样的类很多，我这里给大家分享的是phpmail

首先该文件有一个封装类和一个配置

很简单，然后一个表单进行发邮件。

发件人是我的163邮箱
收件人是我的QQ邮箱

当我点击发送的时候，我就会在我的163邮箱的“已发送”列表看到一篇发送的邮件

然后登陆QQ邮箱就可以看到收件箱有一封刚刚发过来的邮件。
如果收件箱看不到，请到垃圾箱找找......我的是在垃圾箱找到的。

这就是整个发送过程！

上代码：

index.html

    
收件人：
    
标  题：
    
内  容：
    

Smtp.class.php

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("/(^|(
))(.)/", "1.3", $body);

        $header = "MIME-Version:1.0
";

        if($mailtype=="HTML"){

            $header .= "Content-Type:text/html
";

        }

        $header .= "To: ".$to."
";

        if ($cc != "") {

            $header .= "Cc: ".$cc."
";

        }

        $header .= "From: $from<".$from.">
";

        $header .= "Subject: ".$subject."
";

        $header .= $additional_headers;

        $header .= "Date: ".date("r")."
";

        $header .= "X-Mailer:By Redhat (PHP/".phpversion().")
";

        list($msec, $sec) = explode(" ", microtime());

        $header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">
";

        $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."
");

                $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.">
");

            } else {

                $this->log_write("Error: Cannot send email to <".$rcpt_to.">
");

                $sent = FALSE;

            }

            fclose($this->sock);

            $this->log_write("Disconnected from remote host
");

        }

        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 . [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."
");

        $this->sock = @fsockopen($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."
");

            $this->log_write("Error: ".$errstr." (".$errno.")
");

            return FALSE;

        }

        $this->log_write("Connected to relay host ".$this->relay_host."
");

        return TRUE;

    }

    function smtp_sockopen_mx($address)
    {

        $domain = preg_replace("/^.+@([^@]+)$/", "1", $address);

        if (!@getmxrr($domain, $MXHOSTS)) {

            $this->log_write("Error: Cannot resolve MX "".$domain.""
");

            return FALSE;

        }

        //专注与php学习 http://www.daixiaorui.com 欢迎您的访问

        foreach ($MXHOSTS as $host) {

            $this->log_write("Trying to ".$host.":".$this->smtp_port."
");

            $this->sock = @fsockopen($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."
");

                $this->log_write("Error: ".$errstr." (".$errno.")
");

                continue;

            }

            $this->log_write("Connected to mx host ".$host."
");

            return TRUE;

        }

        $this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")
");

        return FALSE;

    }

    function smtp_message($header, $body)
    {

        fputs($this->sock, $header."
".$body);

        $this->smtp_debug("> ".str_replace("
", "
"."> ", $header."
> ".$body."
> "));

        return TRUE;

    }

    function smtp_eom()
    {

        fputs($this->sock, "
.
");

        $this->smtp_debug(". [EOM]
");

        return $this->smtp_ok();

    }

    function smtp_ok()
    {

        $response = str_replace("
", "", fgets($this->sock, 512));

        $this->smtp_debug($response."
");

        if (!preg_match("/^[23]/", $response)) {

            fputs($this->sock, "QUIT
");

            fgets($this->sock, 512);

            $this->log_write("Error: Remote host returned "".$response.""
");

            return FALSE;

        }

        return TRUE;

    }

    function smtp_putcmd($cmd, $arg = "")
    {

        if ($arg != "") {

            if($cmd=="") $cmd = $arg;

            else $cmd = $cmd." ".$arg;

        }

        fputs($this->sock, $cmd."
");

        $this->smtp_debug("> ".$cmd."
");

        return $this->smtp_ok();

    }

    function smtp_error($string)
    {

        $this->log_write("Error: Error occurred while ".$string.".
");

        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.""
");

            return FALSE;

        }

        flock($fp, LOCK_EX);

        fputs($fp, $message);

        fclose($fp);


        return TRUE;

    }


    function strip_comment($address)
    {

        $comment = "/([^()]*)/";

        while (preg_match($comment, $address)) {

            $address = preg_replace($comment, "", $address);

        }

        return $address;

    }


    function get_address($address)
    {

        $address = preg_replace("/([ 	
])+/", "", $address);

        $address = preg_replace("/^.*<(.+)>.*$/", "1", $address);

        return $address;

    }

    function smtp_debug($message)
    {

        if ($this->debug) {

            echo $message;

        }

    }

}

sendmail.php

".$_POST["content"]."";//邮件内容
    $mailtype = "HTML";//邮件格式（HTML/TXT）,TXT为文本邮件
    //************************ 配置信息 ****************************
    $smtp = new Smtp($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 = false;//是否显示发送的调试信息
    $state = $smtp->sendmail($smtpemailto, $smtpusermail, $mailtitle, $mailcontent, $mailtype);

    echo "
";
    if($state==""){
        echo "对不起，邮件发送失败！请检查邮箱填写是否有误。";
        echo "点此返回";
        exit();
    }
    echo "恭喜！邮件发送成功！！";
    echo "点此返回";
    echo "
";

?>

注意：$smtppass这里不是填邮箱的密码，填密码是不行的，要在163后台设置打开授权开关设置一个授权码，打开所有的服务即可。

一般发件人和收件人都在同一个网域就不会被拉入黑名单！发件人用腾讯的，收件人也用腾讯的，那就绝对没问题。