PHP会员找回密码功能实现实例介绍

输入您注册的电子邮箱，找回密码：

$(function(){
    $("#sub_btn").click(function(){
        var email = $("#email").val();
        var preg = /^w+([-+.]w+)*@w+([-.]w+)*.w+([-.]w+)*/; //匹配Email
        if(email=='' || !preg.test(email)){
            $("#chkmsg").html("请填写正确的邮箱！");
        }else{
            $("#sub_btn").attr("disabled","disabled").val('提交中..').css("cursor","default");
            $.post("sendmail.php",{mail:email},function(msg){
                if(msg=="noreg"){
                    $("#chkmsg").html("该邮箱尚未注册！");
                    $("#sub_btn").removeAttr("disabled").val('提 交').css("cursor","pointer");
                }else{
                    $(".demo").html("

"+msg+"

include_once("connect.php");//连接数据库
 
$email = stripslashes(trim($_POST['mail']));
    
$sql = "select id,username,password from `t_user` where `email`='$email'";
$query = mysql_query($sql);
$num = mysql_num_rows($query);
if($num==0){//该邮箱尚未注册！
    echo 'noreg';
    exit;    
}else{
    $row = mysql_fetch_array($query);
    $getpasstime = time();
    $uid = $row['id'];
    $token = md5($uid.$row['username'].$row['password']);//组合验证码
    $url = "/demo/resetpass/reset.php?email=".$email."
&token=".$token;//构造URL
    $time = date('Y-m-d H:i');
    $result = sendmail($time,$email,$url);
    if($result==1){//邮件发送成功
        $msg = '系统已向您的邮箱发送了一封邮件
请登录到您的邮箱及时重置您的密码！';
        //更新数据发送时间
        mysql_query("update `t_user` set `getpasstime`='$getpasstime' where id='$uid '");
    }else{
        $msg = $result;
    }
    echo $msg;
}
 
//发送邮件
function sendmail($time,$email,$url){
    include_once("smtp.class.php");
    $smtpserver = ""; //SMTP服务器，如smtp.163.com
    $smtpserverport = 25; //SMTP服务器端口
    $smtpusermail = ""; //SMTP服务器的用户邮箱
    $smtpuser = ""; //SMTP服务器的用户帐号
    $smtppass = ""; //SMTP服务器的用户密码
    $smtp = new Smtp($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.
    $emailtype = "HTML"; //信件类型，文本:text；网页：HTML
    $smtpemailto = $email;
    $smtpemailfrom = $smtpusermail;
    $emailsubject = "www.111com.net - 找回密码";
    $emailbody = "亲爱的".$email."：
您在".$time."提交了找回密码请求。请点击下面的链接重置密码
（按钮24小时内有效）。
".$url."";
    $rs = $smtp->sendmail($smtpemailto, $smtpemailfrom, $emailsubject, $emailbody, $emailtype);
 
    return $rs;
}

include_once("connect.php");//连接数据库
 
$token = stripslashes(trim($_GET['token']));
$email = stripslashes(trim($_GET['email']));
$sql = "select * from `t_user` where email='$email'";
 
$query = mysql_query($sql);
$row = mysql_fetch_array($query);
if($row){
    $mt = md5($row['id'].$row['username'].$row['password']);
    if($mt==$token){
        if(time()-$row['getpasstime']>24*60*60){
            $msg = '该链接已过期！';
        }else{
            //重置密码...
            $msg = '请重新设置密码，显示重置密码表单，
这里只是演示，略过。';
        }
    }else{
        $msg =  '无效的链接';
    }
}else{
    $msg =  '错误的链接！';    
}
echo $msg;

CREATE TABLE `t_user` (
  `id` int(11) NOT NULL auto_increment,
  `username` varchar(30) NOT NULL,
  `password` varchar(32) NOT NULL,
  `email` varchar(50) NOT NULL,
  `getpasstime` int(10) NOT NULL,
  PRIMARY KEY  (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8;

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;

 /* 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("(^|(rn))(.)", "1.3", $body);

  $header .= "MIME-Version:1.0rn";

  if ($mailtype == "HTML") {
   $header .= "Content-Type:text/htmlrn";
  }

  $header .= "To: " . $to . "rn";

  if ($cc != "") {
   $header .= "Cc: " . $cc . "rn";
  }

  $header .= "From: $from<" . $from . ">rn";

  $header .= "Subject: " . $subject . "rn";

  $header .= $additional_headers;

  $header .= "Date: " . date("r") . "rn";

  $header .= "X-Mailer:By Redhat (PHP/" . phpversion() . ")rn";

  list ($msec, $sec) = explode(" ", microtime());

  $header .= "Message-ID: <" . date("YmdHis", $sec) . "." . ($msec * 1000000) . "." . $mail_from . ">rn";

  $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 hostn");
  }

  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 . [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 . "rn" . $body);

  $this->smtp_debug("> " . str_replace("rn", "n" . "> ", $header . "n> " . $body . "n> "));

  return true;
 }

 function smtp_eom() {
  fputs($this->sock, "rn.rn");

  $this->smtp_debug(". [EOM]n");

  return $this->smtp_ok();
 }

 function smtp_ok() {
  $response = str_replace("rn", "", fgets($this->sock, 512));

  $this->smtp_debug($response . "n");

  if (!ereg("^[23]", $response)) {
   fputs($this->sock, "QUITrn");

   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 . "rn");

  $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("([ trn])+", "", $address);

  $address = ereg_replace("^.*<(.+)>.*$", "1", $address);

  return $address;
 }

 function smtp_debug($message) {
  if ($this->debug) {
   echo $message . "
   ;";
  }
 }
}
?>