(进阶篇)PHP实现用户注册后邮箱验证，激活帐号

CREATE TABLE IF NOT EXISTS `t_user` ( 
  `id` int(11) NOT NULL AUTO_INCREMENT, 
  `username` varchar(30) NOT NULL COMMENT '用户名', 
  `password` varchar(32) NOT NULL COMMENT '密码', 
  `email` varchar(30) NOT NULL COMMENT '邮箱', 
  `token` varchar(50) NOT NULL COMMENT '帐号激活码', 
  `token_exptime` int(10) NOT NULL COMMENT '激活码有效期', 
  `status` tinyint(1) NOT NULL DEFAULT '0' COMMENT '状态,0-未激活,1-已激活', 
  `regtime` int(10) NOT NULL COMMENT '注册时间', 
  PRIMARY KEY (`id`) 
) ENGINE=MyISAM  DEFAULT CHARSET=utf8;

<form id="reg" action="register.php" method="post"> 
    <p>用户名：<input type="text" class="input" name="username" id="user"></p> 
    <p>密 码：<input type="password" class="input" name="password" id="pass"></p> 
    <p>E-mail：<input type="text" class="input" name="email" id="email"></p> 
    <p><input type="submit" class="btn" value="提交注册"></p> 
</form>

include_once("connect.php");//连接数据库 
include_once("smtp.class.php");//邮件发送类

$username = stripslashes(trim($_POST['username'])); 
$query = mysql_query("select id from t_user where username='$username'"); 
$num = mysql_num_rows($query); 
if($num==1){ 
    echo '用户名已存在，请换个其他的用户名'; 
    exit; 
}

$password = md5(trim($_POST['password'])); //加密密码 
$email = trim($_POST['email']); //邮箱 
$regtime = time(); 
 
$token = md5($username.$password.$regtime); //创建用于激活识别码 
$token_exptime = time()+60*60*24;//过期时间为24小时后 
 
$sql = "insert into `t_user` (`username`,`password`,`email`,`token`,`token_exptime`,`regtime`)  
values ('$username','$password','$email','$token','$token_exptime','$regtime')"; 
 
mysql_query($sql);

if(mysql_insert_id()){ 
    $smtpserver = ""; //SMTP服务器，如：smtp.163.com 
    $smtpserverport = 25; //SMTP服务器端口，一般为25 
    $smtpusermail = ""; //SMTP服务器的用户邮箱，如xxx@163.com 
    $smtpuser = ""; //SMTP服务器的用户帐号xxx@163.com 
    $smtppass = ""; //SMTP服务器的用户密码 
    $smtp = new Smtp($smtpserver, $smtpserverport, true, $smtpuser, $smtppass); //实例化邮件类 
    $emailtype = "HTML"; //信件类型，文本:text；网页：HTML 
    $smtpemailto = $email; //接收邮件方，本例为注册用户的Email 
    $smtpemailfrom = $smtpusermail; //发送邮件方，如xxx@163.com 
    $emailsubject = "用户帐号激活";//邮件标题 
    //邮件主体内容 
    $emailbody = "亲爱的".$username."：<br/>感谢您在我站注册了新帐号。<br/>请点击链接激活您的帐号。<br/> 
    <a href=&#39;http://www.helloweba.com/demo/register/active.php?verify=".$token."&#39; target= 
&#39;_blank&#39;>http://www.helloweba.com/demo/register/active.php?verify=".$token."</a><br/> 
    如果以上链接无法点击，请将它复制到你的浏览器地址栏中进入访问，该链接24小时内有效。"; 
    //发送邮件 
    $rs = $smtp->sendmail($smtpemailto, $smtpemailfrom, $emailsubject, $emailbody, $emailtype); 
    if($rs==1){ 
        $msg = &#39;恭喜您，注册成功！<br/>请登录到您的邮箱及时激活您的帐号！&#39;;     
    }else{ 
        $msg = $rs;     
    } 
} 
echo $msg;

include_once("connect.php");//连接数据库 
 
$verify = stripslashes(trim($_GET['verify'])); 
$nowtime = time(); 
 
$query = mysql_query("select id,token_exptime from t_user where status='0' and  
`token`='$verify'"); 
$row = mysql_fetch_array($query); 
if($row){ 
    if($nowtime>$row['token_exptime']){ //24hour 
        $msg = '您的激活有效期已过，请登录您的帐号重新发送激活邮件.'; 
    }else{ 
        mysql_query("update t_user set status=1 where id=".$row['id']); 
        if(mysql_affected_rows($link)!=1) die(0); 
        $msg = '激活成功！'; 
    } 
}else{ 
    $msg = 'error.';     
} 
echo $msg;