php 自动发送邮件的实现

<?php
header("content-type:text/html;charset=utf-8");
ini_set("magic_quotes_runtime",0);
require 'class.phpmailer.php';
require 'class.smtp.php';
try {
$mail = new PHPMailer(true);
$mail->IsSMTP();
$mail->CharSet='UTF-8'; //设置邮件的字符编码，这很重要，不然中文乱码
$mail->SMTPAuth = true; //开启认证
$mail->Port = 25;
$mail->Host = "smtp.163.com";
$mail->Username = "username@163.com";
$mail->Password = "password";
//$mail->IsSendmail(); //如果没有sendmail组件就注释掉，否则出现“Could not execute: /var/qmail/bin/sendmail ”的错误提示
$mail->AddReplyTo("username@163.com","mckee");//回复地址
$mail->From = "username@163.com";
$mail->FromName = "www.phpddt.com";
$to = "981883873@qq.com";
$mail->AddAddress($to);
$mail->Subject = "phpmailer测试标题";
$mail->Body = "<h1>phpmail演示</h1>这是php点点通（<font color=red>www.phpddt.com</font>）对phpmailer的测试内容";
$mail->AltBody = "To view the message, please use an HTML compatible email viewer!"; //当邮件不支持html时备用显示，可以省略
$mail->WordWrap = 80; // 设置每行字符串的长度
//$mail->AddAttachment("f:/test.png"); //可以添加附件
$mail->IsHTML(true);
$mail->Send();
echo '邮件已发送';
} catch (phpmailerException $e) {
echo "邮件发送失败：".$e->errorMessage();
}
?>