PHP实现支持SSL连接的SMTP邮件发送类

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：

代码如下:

setServer("[e-mail]","[e-mail]","XXXXX"); //设置smtp服务器，普通连接方式 * $mail->setServer("smtp.gmail.com","[e-mail]","XXXXX",465,true); //设置smtp服务器，到服务器的SSL连接 * $mail->setFrom("XXXXX"); //设置发件人 * $mail->setReceiver("XXXXX"); //设置收件人，多个收件人，调用多次 * $mail->setCc("XXXX"); //设置抄送，多个抄送，调用多次 * $mail->setBcc("XXXXX"); //设置秘密抄送，多个秘密抄送，调用多次 * $mail->addAttachment("XXXX"); //添加附件，多个附件，调用多次 * $mail->setMail("test","test"); //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 protected */ protected $_userName; /** * @var string 邮件传输代理密码 * @access protected */ protected $_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; /** * @var string 发件人 * @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 主题 * @access protected */ protected $_subject; /** * @var string 邮件正文 * @access protected */ protected $_body; /** * @var array 附件 * @access protected */ protected $_attachment = array(); /** * @var reource socket资源 * @access protected */ protected $_socket; /** * @var reource 是否是安全连接 * @access protected */ protected $_isSecurity; /** * @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 * @param boolean $isSecurity 到服务器的连接是否为安全连接，默认false * @return boolean */ public function setServer($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; } /** * 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，调用多次. * @access public * @param string $to 收件人地址 * @return boolean */ public function setReceiver($to) { $this->_to[] = $to; return true; } /** * 设置抄送，多个抄送，调用多次. * @access public * @param string $cc 抄送地址 * @return boolean */ public function setCc($cc) { $this->_cc[] = $cc; return true; } /** * 设置秘密抄送，多个秘密抄送，调用多次 * @access public * @param string $bcc 秘密抄送地址 * @return boolean */ public function setBcc($bcc) { $this->_bcc[] = $bcc; return true; } /** * 设置邮件附件，多个附件，调用多次 * @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; } /** * 设置邮件信息 * @access public * @param string $body 邮件主题 * @param string $subject 邮件主体内容，可以是纯文本，也可是是HTML文本 * @return boolean */ public function setMail($subject,$body) { $this->_subject = base64_encode($subject); $this->_body = base64_encode($body); return true; } /** * 发送邮件 * @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() : $this->close(); return true; } /** * 返回错误信息 * @return string */ public function error(){ if(!isset($this->_errorMessage)) { $this->_errorMessage = ""; } return $this->_errorMessage; } /** * 返回mail命令 * @access protected * @return array */ protected function getCommand() { $separator = "----=_Part_" . md5($this->_from . time()) . uniqid(); //分隔符 $command = array( array("HELO sendmail\r\n",250) ); if(!empty($this->_userName)){ $command[] = array("AUTH LOGIN\r\n",334); $command[] = array($this->_userName . "\r\n",334); $command[] = array($this->_password . "\r\n",235); } //设置发件人 $command[] = array("MAIL FROM: <" . $this->_from . ">\r\n",250); $header = "FROM: <" . $this->_from . ">\r\n"; //设置收件人 if(!empty($this->_to)) { $count = count($this->_to); if($count == 1){ $command[] = array("RCPT TO: <" . $this->_to[0] . ">\r\n",250); $header .= "TO: <" . $this->_to[0] .">\r\n"; } else{ for($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] .">"; } } } } //设置抄送 if(!empty($this->_cc)) { $count = count($this->_cc); if($count == 1){ $command[] = array("RCPT TO: <" . $this->_cc[0] . ">\r\n",250); $header .= "CC: <" . $this->_cc[0] .">\r\n"; } else{ for($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] .">"; } } } } //设置秘密抄送 if(!empty($this->_bcc)) { $count = count($this->_bcc); if($count == 1) { $command[] = array("RCPT TO: <" . $this->_bcc[0] . ">\r\n",250); $header .= "BCC: <" . $this->_bcc[0] .">\r\n"; } else{ for($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] .">"; } } } } //主题 $header .= "Subject: =?UTF-8?B?" . $this->_subject ."?=\r\n"; if(isset($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,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;\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"; //这里开始是邮件的body部分，body部分分成几段发送 $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 .= "--" . $separator . "\r\n"; //加入附件 if(!empty($this->_attachment)){ $count = count($this->_attachment); for($i=0; $i<$count; $i++){ $header .= "\r\n--" . $separator . "\r\n"; $header .= "Content-Type: " . $this->getMIMEType($this->_attachment[$i]) . '; name="=?UTF-8?B?' . base64_encode( basename($this->_attachment[$i]) ) . '?="' . "\r\n"; $header .= "Content-Transfer-Encoding: base64\r\n"; $header .= 'Content-Disposition: attachment; filename="=?UTF-8?B?' . base64_encode( basename($this->_attachment[$i]) ) . '?="' . "\r\n"; $header .= "\r\n"; $header .= $this->readFile($this->_attachment[$i]); $header .= "\r\n--" . $separator . "\r\n"; } } //结束邮件数据发送 $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:' . $code . '
  ';
  //发送命令给服务器
  try{
  if(socket_write($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();
  }
  }
  /
• 安全连接发送命令
• @access protected
• @param string $command 发送到服务器的smtp命令
• @param int $code 期望服务器返回的响应吗
• @return boolean
  */
  protected function sendCommandSecurity($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,$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();
  }
  }
  /
• 读取附件文件内容，返回base64编码后的文件内容
• @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;
  }
  }
  /**
• 获取附件MIME类型
• @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;
  }
  }
  /**
• 建立到服务器的网络连接
• @access protected
• @return boolean
  */
  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;
  }
  /**
• 建立到服务器的SSL网络连接
• @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 = $errstr;
  return false;
  }
  //设置加密连接，默认是ssl，如果需要tls连接，可以查看php手册stream_socket_enable_crypto函数的解释
  stream_socket_enable_crypto($this->_socket,true,STREAM_CRYPTO_METHOD_SSLv23_CLIENT);
  stream_set_blocking($this->_socket,1); //设置阻塞模式
  $str = fread($this->_socket,$str)){
  $this->_errorMessage = $str;
  return false;
  }
  return true;
  }
  /**
• 关闭socket
• @access protected
• @return boolean
  */
  protected function close() {
  if(isset($this->_socket) && is_object($this->_socket)) {
  $this->_socket->close();
  return true;
  }
  $this->_errorMessage = "No resource can to be close";
  return false;
  }
  /**
• 关闭安全socket
• @access protected
• @return boolean
  */
  protected function closeSecutity() {
  if(isset($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;
  }
  }

希望本文所述对大家的php程序设计有所帮助。