mail_setting:
   smtpserver:          "smtp.qq.com"        #SMTP服务器
   smtpserverport:      25                   #SMTP服务器端口
   smtpusermail:        "xxx@qq.com"       #SMTP服务器的用户邮箱
   smtpuser:            "xxx"              #SMTP服务器的用户帐号
   smtppass:            "pass"     #SMTP服务器的用户密码
   emailtype:           "HTML"               #信件类型，文本:text；网页：HTML
   noauth:              true                 #php必须已经配置好邮件相关配置，然后还需要设置smtpusermail

<?php
 
// $Id: Helper_Email medcl,m@medcl.net,http://log.medcl.net$
 
/**
 
 * 邮件发送助手类
 
 * @eamil m@medcl.net
 
 * @copyright medcl 
 
 * @license New BSD License {@link http://qeephp.com/license/}
 
 * @version 1.1
 
 * @package helper
 
 */
abstract class Helper_Email {
	static  $mailer=null;
	static $emailtype="text";
	static $smtpusermail;	 
   private  function __construct(){}
 
static function send($sendto,$title,$content){
	$setting=Q::ini('appini/mail_setting');
 
	if($setting["noauth"]==true){
		return  self::sendmail($sendto,$title,$content,$setting["smtpusermail"]);
	}
 
	if(null==self::$mailer){		
	//$setting=Q::ini('appini/mail_setting');   	
 	$smtpserver     = $setting["smtpserver"];//SMTP服务器
 	$smtpserverport = $setting["smtpserverport"]; //SMTP服务器端口
 	self::$smtpusermail   = $setting["smtpusermail"]; //SMTP服务器的用户邮箱
 	$smtpuser       = $setting["smtpuser"]; //SMTP服务器的用户帐号
 	$smtppass       = $setting["smtppass"]; //SMTP服务器的用户密码
 	self::$mailer = new smtp($smtpserver, $smtpserverport, true, $smtpuser, $smtppass); //这里面的一个true是表示使用身份验证,否则不使用身份验证.
 	//self::$mailer->debug = true; //是否显示发送的调试信息
 	self::$emailtype = $setting["emailtype"];  //信件类型，文本:text；网页：HTML
 
	}
 
	self::$mailer->sendmail($sendto,self::$smtpusermail , $title, $content, self::$emailtype);
	}
 
static function sendmail($sendto,$title,$content,$from){
 
	$header .= "MIME-Version:1.0\r\n";
 
       // if ($mailtype == "HTML") {
     $header .= "Content-Type:text/html;charset=utf-8\r\n";
        //}
 
        $header .= "Content-Transfer-Encoding: 8bit\r\n";
 
        $header .= "To: " . $sendto . "\r\n";        
 
        $header .= "From: $from<" . $from . ">\r\n";      
 
       // $header .= "Subject: " . $title . "\r\n";
		$title="=?UTF-8?B?".base64_encode($title)."?="; 
        mail($sendto, $title, $content, $header);
}	
 
}
 
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;
    var $header;
 
    /* 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;charset=utf-8\r\n";
        }
 
        $headers .= "Content-Transfer-Encoding: 8bit\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 (!@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 . "<br>";
        }
    }
 
}
?>

 Helper_Email::send($page->xx,"感谢注册xxx，请验证Email信息",'<p>
	Hi '.$page->xx.',<br />
	<br />
	感谢您注册xx，请点击下面的链接验证您的Email：<br />
	<br />
	<a></a><br />
	<br />
	-- <br />
	xxx组委会</p>
<p>
	此为系统邮件，请勿回复<br />
	如有疑问请回复到此邮箱 reg@xx.org 或拨打电话 010 xxxx/p>');