本文实例讲述了PHP实现支持SSL连接的SMTP邮件发送类。分享给大家供大家参考。具体如下：
该实例代码测试过了gmail和QQ邮箱的SMTP。具体代码如下：
复制代码 代码如下:
class MySendMail {
protected $_userName;
protected $_password;
protected $_sendServer;
protected $_port;
protected $_from;
protected $_to = array();
protected $_cc = array();
protected $_bcc = array();
protected $_subject;
protected $_body;
protected $_attachment = array();
protected $_socket;
protected $_isSecurity;
protected $_errorMessage;
public function setServer($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($password);
return true;
}
public function setFrom($from) {
$this->_from = $from;
return true;
}
public function setReceiver($to) {
$this->_to[] = $to;
return true;
}
public function setCc($cc) {
$this->_cc[] = $cc;
return true;
}
public function setBcc($bcc) {
$this->_bcc[] = $bcc;
return true;
}
public function addAttachment($file) {
if(!file_exists($file)) {
$this->_errorMessage = "file " . $file . " does not exist.";
return false;
}
$this->_attachment[] = $file;
return true;
}
public function setMail($subject, $body) {
$this->_subject = base64_encode($subject);
$this->_body = base64_encode($body);
return true;
}
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->_isSecurity ? $this->closeSecutity() : $this->close();
return true;
}
public function error(){
if(!isset($this->_errorMessage)) {
$this->_errorMessage = "";
}
return $this->_errorMessage;
}
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);
}
//设置发件人
$command[] = array("MAIL FROM: <" . $this->_from . ">rn", 250);
$header = "FROM: <" . $this->_from . ">rn";
//设置收件人
if(!empty($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] .">";
}
}
}
}
//设置抄送
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] .">";
}
}
}
}
//设置秘密抄送
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] .">";
}
}
}
}
//主题
$header .= "Subject: =?UTF-8?B?" . $this->_subject ."?=rn";
if(isset($this->_attachment)) {
//含有附件的邮件头需要声明成这个
$header .= "Content-Type: multipart/mixed;rn";
}
elseif(false){
//邮件体含有图片资源的,且包含的图片在邮件内部时声明成这个，如果是引用的远程图片，就不需要了
$header .= "Content-Type: multipart/related;rn";
}
else{
//html或者纯文本的邮件声明成这个
$header .= "Content-Type: multipart/alternative;rn";
}
//邮件头分隔符
$header .= "t" . 'boundary="' . $separator . '"';
$header .= "rnMIME-Version: 1.0rn";
//这里开始是邮件的body部分，body部分分成几段发送
$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";
}
}
//结束邮件数据发送
$header .= "rn.rn";
$command[] = array("DATArn", 354);
$command[] = array($header, 250);
$command[] = array("QUITrn", 221);
return $command;
}
protected function sendCommand($command, $code) {
echo 'Send command:' . $command . ',expected code:' . $code . '
';
//发送命令给服务器
try{
if(socket_write($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:' . $data . '
';
if($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:" . $e->getMessage();
}
}
protected function sendCommandSecurity($command, $code) {
echo 'Send command:' . $command . ',expected code:' . $code . '
';
try {
if(fwrite($this->_socket, $command)){
//当邮件内容分多次发送时，没有$code，服务器没有返回
if(empty($code)) {
return true;
}
//读取服务器返回
$data = trim(fread($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:" . $e->getMessage();
}
}
protected function readFile($file) {
if(file_exists($file)) {
$file_obj = file_get_contents($file);
return base64_encode($file_obj);
}
else {
$this->_errorMessage = "file " . $file . " dose not exist";
return false;
}
}
protected function getMIMEType($file) {
if(file_exists($file)) {
$mime = mime_content_type($file);
return $mime;
}
else {
return false;
}
}
protected function socket() {
//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;
}
$str = socket_read($this->_socket, 1024);
if(!preg_match("/220+?/", $str)){
$this->_errorMessage = $str;
return false;
}
return true;
}
protected function socketSecurity() {
$remoteAddr = "tcp://" . $this->_sendServer . ":" . $this->_port;
$this->_socket = stream_socket_client($remoteAddr, $errno, $errstr, 30);
if(!$this->_socket){
$this->_errorMessage = $errstr;
return false;
}
//设置加密连接，默认是ssl，如果需要tls连接，可以查看php手册stream_socket_enable_crypto函数的解释
stream_socket_enable_crypto($this->_socket, true, STREAM_CRYPTO_METHOD_SSLv23_CLIENT);
stream_set_blocking($this->_socket, 1); //设置阻塞模式
$str = fread($this->_socket, 1024);
if(!preg_match("/220+?/", $str)){
$this->_errorMessage = $str;
return false;
}
return true;
}
protected function close() {
if(isset($this->_socket) && is_object($this->_socket)) {
$this->_socket->close();
return true;
}
$this->_errorMessage = "No resource can to be close";
return false;
}
protected function closeSecutity() {
if(isset($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;
}
}
希望本文所述对大家的php程序设计有所帮助。
