smtp.cls.php

<?php

/*
 * This file is part of the phpems/phpems.
 *
 * (c) oiuv <i@oiuv.cn>
 *
 * 项目维护：oiuv(QQ:7300637) | 定制服务：火眼(QQ:278768688)
 *
 * This source file is subject to the MIT license that is bundled.
 */

class smtp
{
    public $host;          //主机
    public $port;          //端口 一般为25
    public $user;          //SMTP认证的帐号
    public $pass;          //认证密码
    public $debug = true;   //是否显示和服务器会话信息？
    public $conn;
    public $result_str;      //结果
    public $in;          //客户机发送的命令
    public $from_r;          //真实的源信箱,一般与smtp服务器的用户名一样，否则可能由于smtp服务器的设置而发送不成功
    public $mailformat = 1; //邮件格式 0=普通文本 1=html邮件

    public function smtp_mail($host, $port, $user, $pass, $debug = false)
    {
        $this->host = $host;
        $this->port = $port;
        $this->user = base64_encode($user);
        $this->pass = base64_encode($pass);
        $this->debug = $debug;
        $this->socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); //具体用法请参考手册
        if ($this->socket) {
            $this->result_str = '创建SOCKET:'.socket_strerror(socket_last_error());
            $this->debug_show($this->result_str);
        } else {
            exit('初始化失败，请检查您的网络连接和参数');
        }
        $this->conn = socket_connect($this->socket, $this->host, $this->port);
        if ($this->conn) {
            $this->result_str = '创建SOCKET连接:'.socket_strerror(socket_last_error());
            $this->debug_show($this->result_str);
        } else {
            exit('初始化失败，请检查您的网络连接和参数');
        }
        $this->result_str = '服务器应答：<font color=#cc0000>'.socket_read($this->socket, 1024).'</font>';
        $this->debug_show($this->result_str);
    }

    public function debug_show($str)
    {
        if ($this->debug) {
            echo $str."<p>\r\n";
        }
    }

    public function send($from, $to, $subject, $body)
    {
        if ('' == $from || '' == $to) {
            exit('请输入信箱地址');
        }
        if ('' == $subject) {
            $sebject = '无标题';
        }
        if ('' == $body) {
            $body = '无内容';
        }

        $All = 'From:'.$from."\r\n";
        $All .= 'To:'.$to."\r\n";
        $All .= 'Subject:'.$subject."\r\n";
        if (1 == $this->mailformat) {
            $All .= "Content-Type: text/html;\r\n";
        } else {
            $All .= "Content-Type: text/plain;\r\n";
        }
        $All .= "charset=\r\n\r\n";
        $All .= $body;
        /*
        如果把$All的内容再加处理，就可以实现发送MIME邮件了
        不过还需要加很多程序
        */

        //以下是和服务器会话
        $this->in = "EHLO HELO\r\n";
        $this->docommand();

        $this->in = "AUTH LOGIN\r\n";
        $this->docommand();

        $this->in = $this->user."\r\n";
        $this->docommand();

        $this->in = $this->pass."\r\n";
        $this->docommand();

        if (!preg_match('/235/', $this->result_str)) {
            $this->result_str = 'smtp 认证失败';
            $this->debug_show($this->result_str);

            return 0;
        }

        $this->in = 'MAIL FROM:'.$from."\r\n";
        $this->docommand();

        $this->in = 'RCPT TO:'.$to."\r\n";
        $this->docommand();

        $this->in = "DATA\r\n";
        $this->docommand();

        $this->in = $All."\r\n.\r\n";
        $this->docommand();

        if (!preg_match('/250/', $this->result_str)) {
            $this->result_str = '邮件发送失败';
            $this->debug_show($this->result_str);

            return 0;
        }

        $this->in = "QUIT\r\n";
        $this->docommand();

        //结束，关闭连接
        return 1;
    }

    public function docommand()
    {
        socket_write($this->socket, $this->in, strlen($this->in));
        $this->debug_show('客户机命令：'.$this->in);
        $this->result_str = '服务器应答：<span color=#cc0000>'.socket_read($this->socket, 1024).'</span>';
        $this->debug_show($this->result_str);
    }
} //end class