PHP扩展sockets和Fileinfo , 实现发送邮件

<?php/** * 邮件发送类 * 支持发送纯文本邮件和HTML格式的邮件，可以多收件人，多抄送，多秘密抄送，带附件的邮件 * 需要的php扩展，sockets和Fileinfo。 * @example * $mail = new MySendMail(); * $mail->setServer("代理服务器的ip或者域名", "test@163", "123456"); 设置smtp服务器 * $mail->setFrom("test@163"); 设置发件人 * $mail->setReceiver("getTest@163"); 设置收件人，多个收件人，调用多次 * $mail->setCc("..."); 设置抄送，多个抄送，调用多次 * $mail->setBcc("...."); 设置秘密抄送，多个秘密抄送，调用多次 * $mail->setMailInfo("test", "<b>test</b>"); 设置邮件主题、内容 * $mail->sendMail(); 发送 */class MySendMail {    /**     * @var string 邮件传输代理用户名     * @access private     */    private $userName;    /**     * @var string 邮件传输代理密码     * @access private     */    private $_password;    /**     * @var string 邮件传输代理服务器地址     * @access protected     */    protected $_sendServer;    /**     * @var int 邮件传输代理服务器端口     * @access protected     */    protected $_port=25;    /**     * @var string 发件人     * @access protected     */    protected $_from;    /**     * @var string 收件人     * @access protected     */    protected $_to;    /**     * @var string 抄送     * @access protected     */    protected $_cc;    /**     * @var string 秘密抄送     * @access protected     */    protected $_bcc;    /**     * @var string 主题     * @access protected     */    protected $_subject;    /**     * @var string 邮件正文     * @access protected     */    protected $_body;    /**     * @var string 附件     * @access protected     */    protected $_attachment;    /**     * @var reource socket资源     * @access protected     */    protected $_socket;    /**     * @var string 错误信息     * @access protected     */    protected $_errorMessage;    /**     * 设置邮件传输代理，如果是可以匿名发送有邮件的服务器，只需传递代理服务器地址就行     * @access public     * @param string $server 代理服务器的ip或者域名     * @param string $username 认证账号     * @param string $password 认证密码     * @param int $port 代理服务器的端口，smtp默认25号端口     * @return boolean     */    public function setServer($server, $username="", $password="", $port=25) {        $this->_sendServer = $server;        $this->_port = $port;        if(!empty($username)) {            $this->_userName = base64_encode($username);        }        if(!empty($password)) {            $this->_password = base64_encode($password);        }        return true;    }    /**     * 设置发件人     * @access public     * @param string $from 发件人地址     * @return boolean     */    public function setFrom($from) {        $this->_from = $from;        return true;    }    /**     * 设置收件人，多个收件人，连续调用多次.     * @access public     * @param string $to 收件人地址     * @return boolean     */    public function setReceiver($to) {        if(isset($this->_to)) {            if(is_string($this->_to)) {                $this->_to = array($this->_to);                $this->_to[] = $to;                return true;            }            elseif(is_array($this->_to)) {                $this->_to[] = $to;                return true;            }            else {                return false;            }        }        else {            $this->_to = $to;            return true;        }    }    /**     * 设置抄送，多个抄送，连续调用多次.     * @access public     * @param string $cc 抄送地址     * @return boolean     */    public function setCc($cc) {        if(isset($this->_cc)) {            if(is_string($this->_cc)) {                $this->_cc = array($this->_cc);                $this->_cc[] = $cc;                return true;            }            elseif(is_array($this->_cc)) {                $this->_cc[] = $cc;                return true;            }            else {                return false;            }        }        else {            $this->_cc = $cc;            return true;        }    }    /**     * 设置秘密抄送，多个秘密抄送，连续调用多次     * @access public     * @param string $bcc 秘密抄送地址     * @return boolean     */    public function setBcc($bcc) {        if(isset($this->_bcc)) {            if(is_string($this->_bcc)) {                $this->_bcc = array($this->_bcc);                $this->_bcc[] = $bcc;                return true;            }            elseif(is_array($this->_bcc)) {                $this->_bcc[] = $bcc;                return true;            }            else {                return false;            }        }        else {            $this->_bcc = $bcc;            return true;        }    }    /**     * 设置邮件信息     * @access public     * @param string $body 邮件主题     * @param string $subject 邮件主体内容，可以是纯文本，也可是是HTML文本     * @param string $attachment 附件，文件地址     * @return boolean     */    public function setMailInfo($subject, $body, $attachment="") {        $this->_subject = $subject;        $this->_body = base64_encode($body);        if(!empty($attachment)) {            $this->_attachment = $attachment;        }        return true;    }    /**     * 发送邮件     * @access public     * @return boolean     */    public function sendMail() {        $command = $this->getCommand();        $this->socket();        foreach ($command as $value) {            if($this->sendCommand($value[0], $value[1])) {                continue;            }            else{                return false;            }        }        //其实这里也没必要关闭，smtp命令：QUIT发出之后，服务器就关闭了连接，本地的socket资源会自动释放        $this->close();        echo 'Mail OK!';        return true;    }    /**     * 返回错误信息     * @return string     */    public function error(){        if(!isset($this->_errorMessage)) {            $this->_errorMessage = "";        }        return $this->_errorMessage;    }    /**     * 返回mail命令     * @access protected     * @return array     */    protected function getCommand() {        $command = array(            array("HELO sendmail\r\n", 250)        );        if(!empty($this->_userName)){            $command[] = array("AUTH LOGIN\r\n", 334);            $command[] = array($this->_userName . "\r\n", 334);            $command[] = array($this->_password . "\r\n", 235);        }        $command[] = array("MAIL FROM:<" . $this->_from . ">\r\n", 250);        $separator = "----=_Part_" . md5($this->_from . time()) . uniqid(); //分隔符        //设置发件人        $header = "FROM: test<" . $this->_from . ">\r\n";        //设置收件人        if(is_array($this->_to)) {            $count = count($this->_to);            for($i=0; $i<$count; $i++){                $command[] = array("RCPT TO: <" . $this->_to[$i] . ">\r\n", 250);                if($i == 0){                    $header .= "TO: <" . $this->_to[$i] .">";                }                elseif($i + 1 == $count){                    $header .= ",<" . $this->_to[$i] .">\r\n";                }                else{                    $header .= ",<" . $this->_to[$i] .">";                }            }        }        else{            $command[] = array("RCPT TO: <" . $this->_to . ">\r\n", 250);            $header .= "TO: <" . $this->_to . ">\r\n";        }        //设置抄送        if(isset($this->_cc)) {            if(is_array($this->_cc)) {                $count = count($this->_cc);                for($i=0; $i<$count; $i++){                    $command[] = array("RCPT TO: <" . $this->_cc[$i] . ">\r\n", 250);                    if($i == 0){                        $header .= "CC: <" . $this->_cc[$i] .">";                    }                    elseif($i + 1 == $count){                        $header .= ",<" . $this->_cc[$i] .">\r\n";                    }                    else{                        $header .= ",<" . $this->_cc[$i] .">";                    }                }            }            else{                $command[] = array("RCPT TO: <" . $this->_cc . ">\r\n", 250);                $header .= "CC: <" . $this->_cc . ">\r\n";            }        }        //设置秘密抄送        if(isset($this->_bcc)) {            if(is_array($this->_bcc)) {                $count = count($this->_bcc);                for($i=0; $i<$count; $i++){                    $command[] = array("RCPT TO: <" . $this->_bcc[$i] . ">\r\n", 250);                    if($i == 0){                        $header .= "BCC: <" . $this->_bcc[$i] .">";                    }                    elseif($i + 1 == $count){                        $header .= ",<" . $this->_bcc[$i] .">\r\n";                    }                    else{                        $header .= ",<" . $this->_bcc[$i] .">";                    }                }            }            else{                $command[] = array("RCPT TO: <" . $this->_bcc . ">\r\n", 250);                $header .= "BCC: <" . $this->_bcc . ">\r\n";            }        }        $header .= "Subject: " . $this->_subject ."\r\n";        if(isset($this->_attachment)) {            //含有附件的邮件头需要声明成这个            $header .= "Content-Type: multipart/mixed;\r\n";        }        elseif(false){            //邮件体含有图片资源的需要声明成这个            $header .= "Content-Type: multipart/related;\r\n";        }        else{            //html或者纯文本的邮件声明成这个            $header .= "Content-Type: multipart/alternative;\r\n";        }        //邮件头分隔符        $header .= "\t" . 'boundary="' . $separator . '"';        $header .= "\r\nMIME-Version: 1.0\r\n";        $header .= "\r\n--" . $separator . "\r\n";        $header .= "Content-Type:text/html; charset=utf-8\r\n";        $header .= "Content-Transfer-Encoding: base64\r\n\r\n";        $header .= $this->_body . "\r\n";        $header .= "--" . $separator . "\r\n";        //加入附件        if(isset($this->_attachment)){            $header .= "\r\n--" . $separator . "\r\n";            $header .= "Content-Type: " . $this->getMIMEType() . '; name="' . basename($this->_attachment) . '"' . "\r\n";            $header .= "Content-Transfer-Encoding: base64\r\n";            $header .= 'Content-Disposition: attachment; filename="' . basename($this->_attachment) . '"' . "\r\n";            $header .= "\r\n";            $header .= $this->readFile();            $header .= "\r\n--" . $separator . "\r\n";        }        $header .= "\r\n.\r\n";        $command[] = array("DATA\r\n", 354);        $command[] = array($header, 250);        $command[] = array("QUIT\r\n", 221);        return $command;    }    /**     * 发送命令     * @access protected     * @param string $command 发送到服务器的smtp命令     * @param int $code 期望服务器返回的响应吗     * @return boolean     */    protected function sendCommand($command, $code) {        echo 'Send command:' . $command . ',expected code:' . $code . '<br />';        //发送命令给服务器        try{            if(socket_write($this->_socket, $command, strlen($command))){                //当邮件内容分多次发送时，没有$code，服务器没有返回                if(empty($code))  {                    return true;                }                //读取服务器返回                $data = trim(socket_read($this->_socket, 1024));                echo 'response:' . $data . '<br /><br />';                if($data) {                    $pattern = "/^".$code."/";                    if(preg_match($pattern, $data)) {                        return true;                    }                    else{                        $this->_errorMessage = "Error:" . $data . "|**| command:";                        return false;                    }                }                else{                    $this->_errorMessage = "Error:" . socket_strerror(socket_last_error());                    return false;                }            }            else{                $this->_errorMessage = "Error:" . socket_strerror(socket_last_error());                return false;            }        }catch(Exception $e) {            $this->_errorMessage = "Error:" . $e->getMessage();        }    }    /**     * 读取附件文件内容，返回base64编码后的文件内容     * @access protected     * @return mixed     */    protected function readFile() {        if(isset($this->_attachment) && file_exists($this->_attachment)) {            $file = file_get_contents($this->_attachment);            return base64_encode($file);        }        else {            return false;        }    }    /**     * 获取附件MIME类型     * @access protected     * @return mixed     */    protected function getMIMEType() {        if(isset($this->_attachment) && file_exists($this->_attachment)) {            $mime = mime_content_type($this->_attachment);            if(! preg_match("/gif|jpg|png|jpeg/", $mime)){                $mime = "application/octet-stream";            }            return $mime;        }        else {            return false;        }    }    /**     * 建立到服务器的网络连接     * @access private     * @return boolean     */    private function socket() {        if(!function_exists("socket_create")) {            $this->_errorMessage = "Extension sockets must be enabled";            return false;        }        //创建socket资源        $this->_socket = socket_create(AF_INET, SOCK_STREAM, getprotobyname('tcp'));        if(!$this->_socket) {            $this->_errorMessage = socket_strerror(socket_last_error());            return false;        }        socket_set_block($this->_socket);//设置阻塞模式        //连接服务器        if(!socket_connect($this->_socket, $this->_sendServer, $this->_port)) {            $this->_errorMessage = socket_strerror(socket_last_error());            return false;        }        socket_read($this->_socket, 1024);        return true;    }    /**     * 关闭socket     * @access private     * @return boolean     */    private function close() {        if(isset($this->_socket) && is_object($this->_socket)) {            $this->_socket->close();            return true;        }        $this->_errorMessage = "No resource can to be close";        return false;    }}/**************************** Test ***********************************/$mail = new MySendMail();$mail->setServer("test", "test@163", "test");$mail->setFrom("test@163");$mail->setReceiver("test@163");//$mail->setReceiver("test@163");$mail->setCc("test@163");$mail->setCc("test@163");$mail->setBcc("test@163");$mail->setBcc("test@163");$mail->setBcc("test@163");$mail->setMailInfo("test", "<b>test</b>", "sms.zip");$mail->sendMail();