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

<?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 (log_file">!@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;

}

}

}

?>

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);

?>