邮件发送还有问题吗？送大家一个写好的类吧,支持stmp认证、HTML格式邮件

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 xyz/r/n");
    }
    
    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 login/r/n");
            $this->elog(fgets($this->connection, 1024));
             
            $base64_username=base64_encode($this->username);
            $this->elog("$base64_username", 1);
            fputs($this->connection,"$base64_username/r/n");
            $this->elog(fgets($this->connection, 1024));

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

        $this->elog("mail from:$from_mail", 1);
        fputs($this->connection,"mail from:$from_mail/r/n");
        $this->elog(fgets($this->connection, 1024));
        
        $this->elog("rcpt to:$to_mail", 1);
        fputs($this->connection, "rcpt to:$to_mail/r/n");
        $this->elog(fgets($this->connection, 1024));
        
        $this->elog("data", 1);
        fputs($this->connection, "data/r/n");
        $this->elog(fgets($this->connection, 1024));

        $this->elog("subject: $subject", 1);
        $this->elog("to: $to_name", 1);
        fputs($this->connection,"subject: $subject/r/n");
        fputs($this->connection,"to: $to_name/r/n");

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

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

        return 1;
    }


    function send()
    {
        if ($this->connection)
        {
            fputs($this->connection, "quit/r/n");
            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, "    $text/n");
        }
        else
        {
            fwrite($this->elog_fp, "$text/n");
        }
    }
}
?>



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: 1.0/r/n";
            $headers    .=    "content-type: text/html; charset=gb2312/r/n";
            $headers    .=    "from: ".$from_name."<".$from_mail.">/r/n";
            $headers    .=    "to: ".$to_name."<".$to_mail.">/r/n";
            $headers    .=    "reply-to: ".$from_name."<".$reply_mail.">/r/n";
            $headers    .=    "x-priority: 1/r/n";
            $headers    .=    "x-msmail-priority: high/r/n";
            $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);

?>