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PHP實現支持SSL連接的SMTP郵件發送類

編輯：關於PHP編程

這篇文章主要介紹了PHP實現支持SSL連接的SMTP郵件發送類,實例分析了php實現smtp郵件發送類的原理與技巧,以及支持SSL連接的方法,需要的朋友可以參考下

本文實例講述了PHP實現支持SSL連接的SMTP郵件發送類。分享給大家供大家參考。具體如下：

該實例代碼測試過了gmail和QQ郵箱的SMTP。具體代碼如下：

代碼如下: <?php
/**
* 郵件發送類
* 支持發送純文本郵件和HTML格式的郵件，可以多收件人，多抄送，多秘密抄送，帶附件(單個或多個附件),支持到服務器的ssl連接
* 需要的php擴展：sockets、Fileinfo和openssl。
* 編碼格式是UTF-8，傳輸編碼格式是base64
* @example
* $mail = new MySendMail();
* $mail->setServer("[email protected]", "[email protected]", "XXXXX"); //設置smtp服務器，普通連接方式
* $mail->setServer("smtp.gmail.com", "[email protected]", "XXXXX", 465, true); //設置smtp服務器，到服務器的SSL連接
* $mail->setFrom("XXXXX"); //設置發件人
* $mail->setReceiver("XXXXX"); //設置收件人，多個收件人，調用多次
* $mail->setCc("XXXX"); //設置抄送，多個抄送，調用多次
* $mail->setBcc("XXXXX"); //設置秘密抄送，多個秘密抄送，調用多次
* $mail->addAttachment("XXXX"); //添加附件，多個附件，調用多次
* $mail->setMail("test", "test"); //設置郵件主題、內容
* $mail->sendMail(); //發送
*/
class MySendMail {
/**
* @var string 郵件傳輸代理用戶名
* @access protected
*/
protected $_userName;
/**
* @var string 郵件傳輸代理密碼
* @access protected
*/
protected $_password;
/**
* @var string 郵件傳輸代理服務器地址
* @access protected
*/
protected $_sendServer;
/**
* @var int 郵件傳輸代理服務器端口
* @access protected
*/
protected $_port;
/**
* @var string 發件人
* @access protected
*/
protected $_from;
/**
* @var array 收件人
* @access protected
*/
protected $_to = array();
/**
* @var array 抄送
* @access protected
*/
protected $_cc = array();
/**
* @var array 秘密抄送
* @access protected
*/
protected $_bcc = array();
/**
* @var string 主題
* @access protected
*/
protected $_subject;
/**
* @var string 郵件正文
* @access protected
*/
protected $_body;
/**
* @var array 附件
* @access protected
*/
protected $_attachment = array();
/**
* @var reource socket資源
* @access protected
*/
protected $_socket;
/**
* @var reource 是否是安全連接
* @access protected
*/
protected $_isSecurity;
/**
* @var string 錯誤信息
* @access protected
*/
protected $_errorMessage;
/**
* 設置郵件傳輸代理，如果是可以匿名發送有郵件的服務器，只需傳遞代理服務器地址就行
* @access public
* @param string $server 代理服務器的ip或者域名
* @param string $username 認證賬號
* @param string $password 認證密碼
* @param int $port 代理服務器的端口，smtp默認25號端口
* @param boolean $isSecurity 到服務器的連接是否為安全連接，默認false
* @return boolean
*/
public function setServer($server, $username="", $password="", $port=25, $isSecurity=false) {
$this->_sendServer = $server;
$this->_port = $port;
$this->_isSecurity = $isSecurity;
$this->_userName = empty($username) ? "" : base64_encode($username);
$this->_password = empty($password) ? "" : base64_encode($password);
return true;
}
/**
* 設置發件人
* @access public
* @param string $from 發件人地址
* @return boolean
*/
public function setFrom($from) {
$this->_from = $from;
return true;
}
/**
* 設置收件人，多個收件人，調用多次.
* @access public
* @param string $to 收件人地址
* @return boolean
*/
public function setReceiver($to) {
$this->_to[] = $to;
return true;
}
/**
* 設置抄送，多個抄送，調用多次.
* @access public
* @param string $cc 抄送地址
* @return boolean
*/
public function setCc($cc) {
$this->_cc[] = $cc;
return true;
}
/**
* 設置秘密抄送，多個秘密抄送，調用多次
* @access public
* @param string $bcc 秘密抄送地址
* @return boolean
*/
public function setBcc($bcc) {
$this->_bcc[] = $bcc;
return true;
}
/**
* 設置郵件附件，多個附件，調用多次
* @access public
* @param string $file 文件地址
* @return boolean
*/
public function addAttachment($file) {
if(!file_exists($file)) {
$this->_errorMessage = "file " . $file . " does not exist.";
return false;
}
$this->_attachment[] = $file;
return true;
}
/**
* 設置郵件信息
* @access public
* @param string $body 郵件主題
* @param string $subject 郵件主體內容，可以是純文本，也可是是HTML文本
* @return boolean
*/
public function setMail($subject, $body) {
$this->_subject = base64_encode($subject);
$this->_body = base64_encode($body);
return true;
}
/**
* 發送郵件
* @access public
* @return boolean
*/
public function sendMail() {
$command = $this->getCommand();
$this->_isSecurity ? $this->socketSecurity() : $this->socket();
foreach ($command as $value) {
$result = $this->_isSecurity ? $this->sendCommandSecurity($value[0], $value[1]) : $this->sendCommand($value[0], $value[1]);
if($result) {
continue;
}
else{
return false;
}
}
//其實這裡也沒必要關閉，smtp命令：QUIT發出之後，服務器就關閉了連接，本地的socket資源會自動釋放
$this->_isSecurity ? $this->closeSecutity() : $this->close();
return true;
}
/**
* 返回錯誤信息
* @return string
*/
public function error(){
if(!isset($this->_errorMessage)) {
$this->_errorMessage = "";
}
return $this->_errorMessage;
}
/**
* 返回mail命令
* @access protected
* @return array
*/
protected function getCommand() {
$separator = "----=_Part_" . md5($this->_from . time()) . uniqid(); //分隔符
$command = array(
array("HELO sendmailrn", 250)
);
if(!empty($this->_userName)){
$command[] = array("AUTH LOGINrn", 334);
$command[] = array($this->_userName . "rn", 334);
$command[] = array($this->_password . "rn", 235);
}
//設置發件人
$command[] = array("MAIL FROM: <" . $this->_from . ">rn", 250);
$header = "FROM: <" . $this->_from . ">rn";
//設置收件人
if(!empty($this->_to)) {
$count = count($this->_to);
if($count == 1){
$command[] = array("RCPT TO: <" . $this->_to[0] . ">rn", 250);
$header .= "TO: <" . $this->_to[0] .">rn";
}
else{
for($i=0; $i<$count; $i++){
$command[] = array("RCPT TO: <" . $this->_to[$i] . ">rn", 250);
if($i == 0){
$header .= "TO: <" . $this->_to[$i] .">";
}
elseif($i + 1 == $count){
$header .= ",<" . $this->_to[$i] .">rn";
}
else{
$header .= ",<" . $this->_to[$i] .">";
}
}
}
}
//設置抄送
if(!empty($this->_cc)) {
$count = count($this->_cc);
if($count == 1){
$command[] = array("RCPT TO: <" . $this->_cc[0] . ">rn", 250);
$header .= "CC: <" . $this->_cc[0] .">rn";
}
else{
for($i=0; $i<$count; $i++){
$command[] = array("RCPT TO: <" . $this->_cc[$i] . ">rn", 250);
if($i == 0){
$header .= "CC: <" . $this->_cc[$i] .">";
}
elseif($i + 1 == $count){
$header .= ",<" . $this->_cc[$i] .">rn";
}
else{
$header .= ",<" . $this->_cc[$i] .">";
}
}
}
}
//設置秘密抄送
if(!empty($this->_bcc)) {
$count = count($this->_bcc);
if($count == 1) {
$command[] = array("RCPT TO: <" . $this->_bcc[0] . ">rn", 250);
$header .= "BCC: <" . $this->_bcc[0] .">rn";
}
else{
for($i=0; $i<$count; $i++){
$command[] = array("RCPT TO: <" . $this->_bcc[$i] . ">rn", 250);
if($i == 0){
$header .= "BCC: <" . $this->_bcc[$i] .">";
}
elseif($i + 1 == $count){
$header .= ",<" . $this->_bcc[$i] .">rn";
}
else{
$header .= ",<" . $this->_bcc[$i] .">";
}
}
}
}
//主題
$header .= "Subject: =?UTF-8?B?" . $this->_subject ."?=rn";
if(isset($this->_attachment)) {
//含有附件的郵件頭需要聲明成這個
$header .= "Content-Type: multipart/mixed;rn";
}
elseif(false){
//郵件體含有圖片資源的,且包含的圖片在郵件內部時聲明成這個，如果是引用的遠程圖片，就不需要了
$header .= "Content-Type: multipart/related;rn";
}
else{
//html或者純文本的郵件聲明成這個
$header .= "Content-Type: multipart/alternative;rn";
}
//郵件頭分隔符
$header .= "t" . 'boundary="' . $separator . '"';
$header .= "rnMIME-Version: 1.0rn";
//這裡開始是郵件的body部分，body部分分成幾段發送
$header .= "rn--" . $separator . "rn";
$header .= "Content-Type:text/html; charset=utf-8rn";
$header .= "Content-Transfer-Encoding: base64rnrn";
$header .= $this->_body . "rn";
$header .= "--" . $separator . "rn";
//加入附件
if(!empty($this->_attachment)){
$count = count($this->_attachment);
for($i=0; $i<$count; $i++){
$header .= "rn--" . $separator . "rn";
$header .= "Content-Type: " . $this->getMIMEType($this->_attachment[$i]) . '; name="=?UTF-8?B?' . base64_encode( basename($this->_attachment[$i]) ) . '?="' . "rn";
$header .= "Content-Transfer-Encoding: base64rn";
$header .= 'Content-Disposition: attachment; filename="=?UTF-8?B?' . base64_encode( basename($this->_attachment[$i]) ) . '?="' . "rn";
$header .= "rn";
$header .= $this->readFile($this->_attachment[$i]);
$header .= "rn--" . $separator . "rn";
}
}
//結束郵件數據發送
$header .= "rn.rn";

$command[] = array("DATArn", 354);
$command[] = array($header, 250);
$command[] = array("QUITrn", 221);
return $command;
}
/**
* 發送命令
* @access protected
* @param string $command 發送到服務器的smtp命令
* @param int $code 期望服務器返回的響應嗎
* @return boolean
*/
protected function sendCommand($command, $code) {
echo 'Send command:' . $command . ',expected code:' . $code . ' ';
//發送命令給服務器
try{
if(socket_write($this->_socket, $command, strlen($command))){
//當郵件內容分多次發送時，沒有$code，服務器沒有返回
if(empty($code)) {
return true;
}
//讀取服務器返回
$data = trim(socket_read($this->_socket, 1024));
echo 'response:' . $data . ' ';
if($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();
}
}
/**
* 安全連接發送命令
* @access protected
* @param string $command 發送到服務器的smtp命令
* @param int $code 期望服務器返回的響應嗎
* @return boolean
*/
protected function sendCommandSecurity($command, $code) {
echo 'Send command:' . $command . ',expected code:' . $code . ' ';
try {
if(fwrite($this->_socket, $command)){
//當郵件內容分多次發送時，沒有$code，服務器沒有返回
if(empty($code)) {
return true;
}
//讀取服務器返回
$data = trim(fread($this->_socket, 1024));
echo 'response:' . $data . ' ';
if($data) {
$pattern = "/^".$code."+?/";
if(preg_match($pattern, $data)) {
return true;
}
else{
$this->_errorMessage = "Error:" . $data . "|**| command:";
return false;
}
}
else{
return false;
}
}
else{
$this->_errorMessage = "Error: " . $command . " send failed";
return false;
}
}catch(Exception $e) {
$this->_errorMessage = "Error:" . $e->getMessage();
}
}
/**
* 讀取附件文件內容，返回base64編碼後的文件內容
* @access protected
* @param string $file 文件
* @return mixed
*/
protected function readFile($file) {
if(file_exists($file)) {
$file_obj = file_get_contents($file);
return base64_encode($file_obj);
}
else {
$this->_errorMessage = "file " . $file . " dose not exist";
return false;
}
}
/**
* 獲取附件MIME類型
* @access protected
* @param string $file 文件
* @return mixed
*/
protected function getMIMEType($file) {
if(file_exists($file)) {
$mime = mime_content_type($file);
/*if(! preg_match("/gif|jpg|png|jpeg/", $mime)){
$mime = "application/octet-stream";
}*/
return $mime;
}
else {
return false;
}
}
/**
* 建立到服務器的網絡連接
* @access protected
* @return boolean
*/
protected function socket() {
//創建socket資源
$this->_socket = socket_create(AF_INET, SOCK_STREAM, getprotobyname('tcp'));
if(!$this->_socket) {
$this->_errorMessage = socket_strerror(socket_last_error());
return false;
}
socket_set_block($this->_socket);//設置阻塞模式
//連接服務器
if(!socket_connect($this->_socket, $this->_sendServer, $this->_port)) {
$this->_errorMessage = socket_strerror(socket_last_error());
return false;
}
$str = socket_read($this->_socket, 1024);
if(!preg_match("/220+?/", $str)){
$this->_errorMessage = $str;
return false;
}
return true;
}
/**
* 建立到服務器的SSL網絡連接
* @access protected
* @return boolean
*/
protected function socketSecurity() {
$remoteAddr = "tcp://" . $this->_sendServer . ":" . $this->_port;
$this->_socket = stream_socket_client($remoteAddr, $errno, $errstr, 30);
if(!$this->_socket){
$this->_errorMessage = $errstr;
return false;
}
//設置加密連接，默認是ssl，如果需要tls連接，可以查看php手冊stream_socket_enable_crypto函數的解釋
stream_socket_enable_crypto($this->_socket, true, STREAM_CRYPTO_METHOD_SSLv23_CLIENT);
stream_set_blocking($this->_socket, 1); //設置阻塞模式
$str = fread($this->_socket, 1024);
if(!preg_match("/220+?/", $str)){
$this->_errorMessage = $str;
return false;
}
return true;
}
/**
* 關閉socket
* @access protected
* @return boolean
*/
protected function close() {
if(isset($this->_socket) && is_object($this->_socket)) {
$this->_socket->close();
return true;
}
$this->_errorMessage = "No resource can to be close";
return false;
}
/**
* 關閉安全socket
* @access protected
* @return boolean
*/
protected function closeSecutity() {
if(isset($this->_socket) && is_object($this->_socket)) {
stream_socket_shutdown($this->_socket, STREAM_SHUT_WR);
return true;
}
$this->_errorMessage = "No resource can to be close";
return false;
}
}

希望本文所述對大家的php程序設計有所幫助。