PHP的一个完整SMTP类(解决邮件服务器需要验证时的问题)

smtp.php

<?phpclass 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 <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, $header.'rn'.$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;

}

}

}

?>

test.php

<?php

/*

这是一个测试程序!!!

请按照说明设置好以下的参数,以下是以tom.com的用户为例设置好的.

*/

require('sm.php');

##########################################

$smtpserver = 'smtp.tom.com';//SMTP服务器

$smtpserverport =25;//SMTP服务器端口

$smtpusermail = 'someone@tom.com';//SMTP服务器的用户邮箱

$smtpemailto = 'jack@knowsky.com';//发送给谁

$smtpuser = 'someone';//SMTP服务器的用户帐号

$smtppass = 'someonepass';//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);

?>