PHP一个发送邮件的类

  现在很多主机空间都是IIS上执行PHP程序,大多不能直接用mail()发送邮件,有了这个类只要你有注册过邮箱,就可以随意的发送邮件,速度也不慢哦。
  //******************************
  //smtp.php文件
  //
  //******************************
  <?php
  class smtp
  {
  /*Public Variables*/
  var$smtp_port;
  var$time_out;
  var$host_name;
  var$log_file;
  var$relay_host;
  var$debug;
  var$auth;
  var$user;
  var$pass;
  /*Private Variables*/
  var$sock;
  /*Constractor*/
  function smtp($relay_host="",$smtp_port=25,$auth=false,$user,$pass)
  {
  $this->debug=FALSE;
  $this->smtp_port=$smtp_port;
  $this->relay_host=$relay_host;
  $this->time_out=30;//is used in fsockopen()
  #
  $this->auth=$auth;//auth
  $this->user=$user;
  $this->pass=$pass;
  #
  $this->host_name="localhost";//is used in HELO command
  $this->log_file="";
  $this->sock=FALSE;
  }
  /*Main Function*/
  function sendmail($to,$from,$subject="",$body="",$mailtype,$cc="",$bcc="",$additional_headers="")
  {
  $mail_from=$this->get_address($this->strip_comment($from));
  $body=ereg_replace("(^|(\r\n))(\.)","\1.\3",$body);
  $header="MIME-Version:1.0\r\n";
  if($mailtype=="HTML"){
  $header.="Content-Type:text/html\r\n";
  }
  $header.="To:".$to."\r\n";
  if($cc!=""){
  $header.="Cc:".$cc."\r\n";
  }
  $header.="From:$from<".$from.">\r\n";
  $header.="Subject:".$subject."\r\n";
  $header.=$additional_headers;
  $header.="Date:".date("r")."\r\n";
  $header.="X-Mailer:By Redhat(PHP/".phpversion().")\r\n";
  list($msec,$sec)=explode("",microtime());
  $header.="Message-ID:<".date("YmdHis",$sec).".".($msec*1000000).".".$mail_from.">\r\n";
  $TO=explode(",",$this->strip_comment($to));
  if($cc!=""){
  $TO=array_merge($TO,explode(",",$this->strip_comment($cc)));
  }
  if($bcc!=""){
  $TO=array_merge($TO,explode(",",$this->strip_comment($bcc)));
  }
  $sent=TRUE;
  foreach($TO as$rcpt_to){
  $rcpt_to=$this->get_address($rcpt_to);
  if(!$this->smtp_sockopen($rcpt_to)){
  $this->log_write("Error:Cannot send email to".$rcpt_to."\n");
  $sent=FALSE;
  continue;
  }
  if($this->smtp_send($this->host_name,$mail_from,$rcpt_to,$header,$body)){
  $this->log_write("E-mail has been sent to<".$rcpt_to.">\n");
  }else{
  $this->log_write("Error:Cannot send email to<".$rcpt_to.">\n");
  $sent=FALSE;
  }
  fclose($this->sock);
  $this->log_write("Disconnected from remote host\n");
  }
  return$sent;
  }
  /*Private Functions*/
  function smtp_send($helo,$from,$to,$header,$body="")
  {
  if(!$this->smtp_putcmd("HELO",$helo)){
  return$this->smtp_error("sending HELO command");
  }
  #auth
  if($this->auth){
  if(!$this->smtp_putcmd("AUTH LOGIN",base64_encode($this->user))){
  return$this->smtp_error("sending HELO command");
  }
  if(!$this->smtp_putcmd("",base64_encode($this->pass))){
  return$this->smtp_error("sending HELO command");
  }
  }
  #
  if(!$this->smtp_putcmd("MAIL","FROM:<".$from.">")){
  return$this->smtp_error("sending MAIL FROM command");
  }
  if(!$this->smtp_putcmd("RCPT","TO:<".$to.">")){
  return$this->smtp_error("sending RCPT TO command");
  }
  if(!$this->smtp_putcmd("DATA")){
  return$this->smtp_error("sending DATA command");
  }
  if(!$this->smtp_message($header,$body)){
  return$this->smtp_error("sending message");
  }
  if(!$this->smtp_eom()){
  return$this->smtp_error("sending<CR><LF>.<CR><LF>[EOM]");
  }
  if(!$this->smtp_putcmd("QUIT")){
  return$this->smtp_error("sending QUIT command");
  }
  return TRUE;
  }
  function smtp_sockopen($address)
  {
  if($this->relay_host==""){
  return$this->smtp_sockopen_mx($address);
  }else{
  return$this->smtp_sockopen_relay();
  }
  }
  function smtp_sockopen_relay()
  {
  $this->log_write("Trying to".$this->relay_host.":".$this->smtp_port."\n");
  $this->sock= fsockopen($this->relay_host,$this->smtp_port,$errno,$errstr,$this->time_out);
  if(!($this->sock&&$this->smtp_ok())){
  $this->log_write("Error:Cannot connenct to relay host".$this->relay_host."\n");
  $this->log_write("Error:".$errstr."(".$errno.")\n");
  return FALSE;
  }
  $this->log_write("Connected to relay host".$this->relay_host."\n");
  return TRUE;
  }
  function smtp_sockopen_mx($address)
  {
  $domain=ereg_replace("^.+ ([^ ]+)$","\1",$address);
  if(! getmxrr($domain,$MXHOSTS)){
  $this->log_write("Error:Cannot resolve MX\"".$domain."\"\n");
  return FALSE;
  }
  foreach($MXHOSTS as$host){
  $this->log_write("Trying to".$host.":".$this->smtp_port."\n");
  $this->sock= fsockopen($host,$this->smtp_port,$errno,$errstr,$this->time_out);
  if(!($this->sock&&$this->smtp_ok())){
  $this->log_write("Warning:Cannot connect to mx host".$host."\n");
  $this->log_write("Error:".$errstr."(".$errno.")\n");
  continue;
  }
  $this->log_write("Connected to mx host".$host."\n");
  return TRUE;
  }
  $this->log_write("Error:Cannot connect to any mx hosts(".implode(",",$MXHOSTS).")\n");
  return FALSE;
  }
  function smtp_message($header,$body)
  {
  fputs($this->sock,$header."\r\n".$body);
  $this->smtp_debug(">".str_replace("\r\n","\n".">",$header."\n>".$body."\n>"));
  return TRUE;
  }
  function smtp_eom()
  {
  fputs($this->sock,"\r\n.\r\n");
  $this->smtp_debug(".[EOM]\n");
  return$this->smtp_ok();
  }
  function smtp_ok()
  {
  $response=str_replace("\r\n","",fgets($this->sock,512));
  $this->smtp_debug($response."\n");
  if(!ereg("^[23]",$response)){
  fputs($this->sock,"QUIT\r\n");
  fgets($this->sock,512);
  $this->log_write("Error:Remote host returned\"".$response."\"\n");
  return FALSE;
  }
  return TRUE;
  }
  function smtp_putcmd($cmd,$arg="")
  {
  if($arg!=""){
  if($cmd=="")$cmd=$arg;
  else$cmd=$cmd."".$arg;
  }
  fputs($this->sock,$cmd."\r\n");
  $this->smtp_debug(">".$cmd."\n");
  return$this->smtp_ok();
  }
  function smtp_error($string)
  {
  $this->log_write("Error:Error occurred while".$string.".\n");
  return FALSE;
  }
  function log_write($message)
  {
  $this->smtp_debug($message);
  if($this->log_file==""){
  return TRUE;
  }
  $message=date("M d H:i:s").get_current_user()."[".getmypid()."]:".$message;
  if(! file_exists($this->log_file)||!($fp= fopen($this->log_file,"a"))){
  $this->smtp_debug("Warning:Cannot open log file\"".$this->log_file."\"\n");
  return FALSE;;
  }
  flock($fp,LOCK_EX);
  fputs($fp,$message);
  fclose($fp);
  return TRUE;
  }
  function strip_comment($address)
  {
  $comment="\([^()]*\)";
  while(ereg($comment,$address)){
  $address=ereg_replace($comment,"",$address);
  }
  return$address;
  }
  function get_address($address)
  {
  $address=ereg_replace("([\t\r\n])+","",$address);
  $address=ereg_replace("^.*<(.+)>.*$","\1",$address);
  return$address;
  }
  function smtp_debug($message)
  {
  if($this->debug){
  echo$message;
  }
  }
  }
  ?>
  //*****************************************************************
  //*.php使用文件,看清楚了,怎么使用在这里
  //
  //*****************************************************************
  <?
  require(FILE_DIR."smtp.php");
  $smtpserver="smtp.xxx.com";//SMTP服务器
  $smtpserverport=25;//SMTP服务器端口
  $smtpusermail="xxxxx xxx.com";//SMTP服务器的用户邮箱
  $smtpemailto="aaaaa xxx.com";//发送给谁
  $smtpuser="xxxxx";//SMTP服务器的用户帐号
  $smtppass="xxxxx";//SMTP服务器的用户密码
  $mailsubject="Test Subject";//邮件主题
  $mailbody="<h1>This is a test mail</h1>";//邮件内容
  $mailtype="HTML";//邮件格式(HTML/TXT),TXT为文本邮件
  $smtp=new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);//这里面的一个true是表示使用身份验证,否则不使用身份验证.
  $smtp->debug=TRUE;//是否显示发送的调试信息
  $smtp->sendmail($smtpemailto,$smtpusermail,$mailsubject,$mailbody,$mailtype);
  ?>