支持stmp认证、HTML格式邮件的类

c_smtp_client.php
<?php
/* smtp client class */
class c_smtp_client
{
var $connection;
var $server;
var $elog_fp;
var $log_file='./smtp_client.log';
var $do_log=true;
var $need_auth=true;
var $username;
var $password;

// 构造器
function c_smtp_client($server='')
{
if (!$server)
{
$this->server="localhost";
}
else
{
$this->server=$server;
}

$this->connection = fsockopen($this->server, 25);
if ($this->connection <= 0) return 0;
fputs($this->connection,"HELO xyzrn");
}

function email($from_mail, $to_mail, $to_name, $header, $subject, $body)
{
if ($this->connection <= 0) return 0;

// 邮件用户认证
if ($this->need_auth)
{
$this->elog("AUTH LOGIN", 1);
fputs($this->connection,"AUTH LOGINrn");
$this->elog(fgets($this->connection, 1024));

$base64_username=base64_encode($this->username);
$this->elog("$base64_username", 1);
fputs($this->connection,"$base64_usernamern");
$this->elog(fgets($this->connection, 1024));

$base64_password=base64_encode($this->password);
$this->elog("$base64_password", 1);
fputs($this->connection,"$base64_passwordrn");
$this->elog(fgets($this->connection, 1024));
}

$this->elog("MAIL FROM:$from_mail", 1);
fputs($this->connection,"MAIL FROM:$from_mailrn");
$this->elog(fgets($this->connection, 1024));

$this->elog("RCPT TO:$to_mail", 1);
fputs($this->connection, "RCPT TO:$to_mailrn");
$this->elog(fgets($this->connection, 1024));

$this->elog("DATA", 1);
fputs($this->connection, "DATArn");
$this->elog(fgets($this->connection, 1024));

$this->elog("Subject: $subject", 1);
$this->elog("To: $to_name", 1);
fputs($this->connection,"Subject: $subjectrn");
fputs($this->connection,"To: $to_namern");

if ($header)
{
$this->elog($header, 1);
fputs($this->connection, "$headerrn");
}

$this->elog("", 1);
$this->elog($body, 1);
$this->elog(".", 1);
fputs($this->connection,"rn");
fputs($this->connection,"$body rn");
fputs($this->connection,".rn");
$this->elog(fgets($this->connection, 1024));

return 1;
}

function send()
{
if ($this->connection)
{
fputs($this->connection, "QUITrn");
fclose($this->connection);
$this->connection=0;
}
}

function close()
{
$this->send();
}

function elog($text, $mode=0)
{
if (!$this->do_log) return;

// open file
if (!$this->elog_fp)
{
if (!($this->elog_fp=fopen($this->log_file, 'a'))) return;
fwrite($this->elog_fp, "n-------------------------------------------n");
fwrite($this->elog_fp, " Sent " . date("Y-m-d H:i:s") . "n");
fwrite($this->elog_fp, "-------------------------------------------n");
}

// write to log
if (!$mode)
{
fwrite($this->elog_fp, "    $textn");
}
else
{
fwrite($this->elog_fp, "$textn");
}
}
}
?>

c_mail.php
<?php

/* 邮件发送类 */
require_once dirname(__FILE__)."/c_smtp_client.php";
static $c_smtp_client;
if(!isset($c_smtp_client))
{
$c_smtp_client              =    & new c_smtp_client($smtp_server['name']);
$c_smtp_client->do_log      =    false;
$c_smtp_client->need_auth   =    $smtp_server['need_auth'];
$c_smtp_client->username    =    $smtp_server['username'];
$c_smtp_client->password    =    $smtp_server['password'];    
}

class c_mail
{
// html格式的Mail信笺
function html_mailer($from_name,$from_mail,$to_name,$to_mail,$subject,$message,$reply_mail)
{
$headers     =    "";
$headers    .=    "MIME-Version: 1.0rn";
$headers    .=    "Content-type: text/html; charset=gb2312rn";
$headers    .=    "From: ".$from_name."<".$from_mail.">rn";
$headers    .=    "To: ".$to_name."<".$to_mail.">rn";
$headers    .=    "Reply-To: ".$from_name."<".$reply_mail.">rn";
$headers    .=    "X-Priority: 1rn";
$headers    .=    "X-MSMail-Priority: Highrn";
$headers    .=    "X-Mailer: WebCMS MAIL SERV";

// 开始发送邮件
if($smtp_server['name']=='')
{
@mail($to_mail, $subject, $message, $headers);
}
else
{
$c_smtp_client->email($from_mail,$to_mail,$to_name,$headers,$subject,$message);
$c_smtp_client->send();        
}
}
}
?>

config.inc.php
<?php
//smtp_server['name']=='';则表示直接使用mail();          
//smtp_server['name']=='localhost';表示程序所在主机的smtp服务器
$smtp_server['name']            =    "";
$smtp_server['need_auth']       =    true;
$smtp_server['username']        =    '';
$smtp_server['password']        =    '';
?>

sendmail.php
<?php
//调用方法
require_once dirname(__FILE__)."/config.inc.php";
require_once dirname(__FILE__)."/c_mail.php";
$c_mail    = new c_mail();
$c_mail->html_mailer($from_name,$from_mail,$to_name,$to_mail,$subject,$message,$reply_mail);

?>