php email sending

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("(^|(rn))(\.)", "\1.\3", $body); 
$header .= "MIME-Version:1.0rn"; 
if($mailtype=="HTML"){ 
$header .= "Content-Type:text/htmlrn"; 
} 
$header .= "To: ".$to."rn"; 
if ($cc != "") { 
$header .= "Cc: ".$cc."rn"; 
} 
$header .= "From: $from<".$from.">;rn"; 
$header .= "Subject: ".$subject."rn"; 
$header .= $additional_headers; 
$header .= "Date: ".date("r")."rn"; 
$header .= "X-Mailer:By Redhat (PHP/".phpversion().")rn"; 
list($msec, $sec) = explode(" ", microtime()); 
$header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">;rn"; 
$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 hostn"); 
} 
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 $this->smtp_error("sending ;;.;; [EOM]"); 
} 
if (!$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, $header."rn".$body); 
$this->smtp_debug(">; ".str_replace("rn", "n".">; ", $header."n>; ".$body."n>; ")); 
return TRUE; 
} 
function smtp_eom() 
{ 
fputs($this->sock, "rn.rn"); 
$this->smtp_debug(". [EOM]n"); 
return $this->smtp_ok(); 
} 
function smtp_ok() 
{ 
$response = str_replace("rn", "", fgets($this->sock, 512)); 
$this->smtp_debug($response."n"); 
if (!ereg("^[23]", $response)) { 
fputs($this->sock, "QUITrn"); 
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."rn"); 
$this->smtp_debug(">; ".$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("([ trn])+", "", $address); 
$address = ereg_replace("^.*<(.+)>;.*$", "\1", $address); 
return $address; 
} 
function smtp_debug($message) 
{ 
if ($this->debug) { 
echo $message; 
} 
} 
} 
function sendmail($smtpserver,$smtpuser,$smtppass,$smtpemailto,$smtpusermail, $mailsubject, $mailbody){ 
$smtp = new smtp($smtpserver,25,true,$smtpuser,$smtppass); 

$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, "HTML"); 
} 

//sendmail("smtp.126.com","test@126.com","password","1034555083@qq.com","test@126.com","title","body"); 

//$smtpserver = "SMTP.163.com";　//您的smtp服务器的地址 
$smtpserver="smtp.qq.com"; 
$port =25; //smtp服务器的端口，一般是 25 
$smtpuser = "116206443@emil.com"; //您登录smtp服务器的用户名 
$smtppwd = "123456789oiuy"; //您登录smtp服务器的密码 
$mailtype = "TXT"; //邮件的类型，可选值是 TXT 或 HTML ,TXT 表示是纯文本的邮件,HTML 表示是 html格式的邮件 
$sender = "116206443@qq.com"; 
//发件人,一般要与您登录smtp服务器的用户名($smtpuser)相同,否则可能会因为smtp服务器的设置导致发送失败 
$smtp = new smtp($smtpserver,$port,true,$smtpuser,$smtppwd,$sender); 
$smtp->debug = true; //是否开启调试,只在测试程序时使用，正式使用时请将此行注释 
$to = "116206443@qq.com"; //收件人 
$subject = "你好"; 
$body = "测试发送的内容 "; 
$send=$smtp->sendmail($to,$sender,$subject,$body,$mailtype); 

if($send==1){ 
echo "邮件发送成功"; 
}else{ 
echo "邮件发送失败
"; 
//echo "原因：".$this->smtp->logs; 
} 
?>