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SMTP 之 PHP 调用示例

本文介绍使用 PHP 通过 SMTP 协议发信。

使用 PHP 通过 SMTP 协议发信

方法一:使用外部依赖phpmailer,通过github下载(PHPMailer.php,Exception.php,SMTP.php)。

PHPMailer.php修改中文编码:

public $CharSet = self::CHARSET_ISO88591;

修改为:

public $CharSet = self::CHARSET_UTF8;

发信示例代码:

<?php
require 'PHPMailer.php';
require 'Exception.php';
require 'SMTP.php';


$mail = new PHPMailer(true);

try {
    //Server settings
    $mail->Charset='UTF-8';
    $mail->SMTPDebug = SMTP::DEBUG_SERVER;                      
    $mail->isSMTP();                                            
    $mail->Host       = 'ssl://smtpdm.aliyun.com';                     //邮件推送服务器
    $mail->Port       = 465;                                    //端口
    //$mail->Host       = 'smtpdm.aliyun.com';                     
    //$mail->Port       = 80;                                    
    $mail->SMTPAuth   = true;                                   //授权
    $mail->Username   = 'Sender@demo.aliyun.com';                     //发信地址
    $mail->Password   = '*******';                               //SMTP 密码
    $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;         //启用加密
    //Recipients
    $mail->setFrom('Sender@demo.aliyun.com', 'Mailer');   //显示发信地址,可设置代发。
    $mail->addAddress('Address@demo.aliyun.com', 'name');     //收件人和昵称
    //$mail->addAddress('Address@demo.aliyun.com');               //昵称也可不填
    //$mail->addAddress('Address2@demo.aliyun.com', 'name2');//如果需要设置多个收件人,可以再添加一条
    $mail->addReplyTo('Address@demo.aliyun.com', 'Information');//回信地址
    $mail->addCC('Address@demo.aliyun.com');//抄送人
    $mail->addBCC('Address@demo.aliyun.com');//密送人

    //Attachments
    //$mail->addAttachment('C:/Users/Documents/test.jpg');         //增加附件
    $mail->addAttachment('C:/Users/Documents/test.jpg', 'new.jpg');    //名称可选

    //Content
    $mail->isHTML(true);                                  //HTML 格式
    $mail->Subject = '测试 标题';
    $mail->Body    = '测试 内容';
    //$mail->AltBody = 'This is the body in plain text for non-HTML mail clients';

    $mail->Sender = 'Sender@demo.aliyun.com';
    echo 'Message has been sent';
    $mail->send();
    echo 'Message has been sent';
} catch (Exception $e) {
    echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";
}
?>

方法二:使用外部依赖email.class.php

<?php
require 'email.class.php';

$mailto='收信地址';
$mailsubject="测试邮件";
$mailbody='这里是邮件内容';

$smtpserver     = "smtpdm.aliyun.com";
$smtpserverport = 80;
// $smtpserver= "ssl://smtpdm.aliyun.com";
// $smtpserverport = 465;
$smtpusermail   = "发信地址";

// 发件人的账号,填写控制台配置的发信地址,比如xxx@xxx.com
$smtpuser       = "发件人账号";
// 访问SMTP服务时需要提供的密码(在控制台选择发信地址进行设置)
$smtppass       = "***";

$mailsubject    = "=?UTF-8?B?" . base64_encode($mailsubject) . "?=";
$mailtype       = "HTML";

//可选,设置回信地址
$smtpreplyto    = "***";

$smtp           = new smtp($smtpserver, $smtpserverport, true, $smtpuser, $smtppass);
$smtp->debug    = false;
$cc   ="";
$bcc  = "";
$additional_headers = "";
//设置发件人名称,名称用户可以自定义填写。
$sender  = "发件人";
$smtp->sendmail($mailto,$smtpusermail, $mailsubject, $mailbody, $mailtype, $cc, $bcc, $additional_headers, $sender, $smtpreplyto);
?>

其中email.class.php的内容需修改

$header .=”Reply-To: “.$replyToAddress.”\r\n”;//其中$replyToAddress就是参数$smtpreplyto

注意

  • email.class.php 为外部依赖,请自行在网上下载。

  • mailto:收件人邮箱地址。

  • smtpuser:完整的发信地址。

email.class.php可参考示例

<?php

/**
 * email smtp (support php7)
 *
 */


class Smtp
{
    /* Public Variables */
    public $smtp_port;

    public $time_out;

    public $host_name;

    public $log_file;

    public $relay_host;

    public $debug;

    public $auth;

    public $user;

    public $pass;

    /* Private Variables */
    private $sock;

    /* Constractor */
    function __construct($relay_host = "", $smtp_port = 80,$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, $fromUser, $replyToAddress)
    {

        $mail_from = $this->get_address($this->strip_comment($from));

        $body = preg_replace("/(^|(\r\n))(\.)/", "\1.\3", $body);

        $header = "MIME-Version:1.0\r\n";

        if($mailtype=="HTML"){

            $header .= "Content-Type:text/html; charset=utf-8\r\n";

        }

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

        if ($cc != "") {

            $header .= "Cc: ".$cc."\r\n";

        }

        $header .= "From: $fromUser<".$from.">\r\n";

        $header .= "Subject: ".$subject."\r\n";

        $header .= "Reply-To: ".$replyToAddress."\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";

        //若需要开启邮件跟踪服务,请使用以下代码设置跟踪链接头。前置条件和约束见文档"如何开启数据跟踪功能?"
        //$header .= "Content-Transfer-Encoding: quoted-printable\r\n";
        //$header .= "X-AliDM-Trace: ". base64_encode(json_encode(['TagName'=>'用户创建的Tag','OpenTrace'=>"1"]))."\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)
    {

        $domain = preg_replace("/^.+@([^@]+)$/", "\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 (!preg_match("/^[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 (preg_match($comment, $address)) {

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

        }

        return $address;

    }


    function get_address($address)
    {

        $address = preg_replace("/([ \t\r\n])+/", "", $address);

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

        return $address;

    }

    function smtp_debug($message)
    {

        if ($this->debug) {

            echo $message;

        }

    }

}
?>
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