PHP会员找回密码功能实现实例介绍_PHP教程

如果你做的网站有会员系统那必须就自动找回密码功能了，也就是忘记密码功能，如果用户忘记了密码可以通过邮箱或手机号直接找回密码，下面我来介绍邮箱找回密码方法。

设置思路

1、用户注册时需要提供一个E-MAIL邮箱，目的就是用该邮箱找回密码。

2、当用户忘记密码或用户名时，点击登录页面的“找回密码”超链接，打开表单，并输入注册用的E-MAIL邮箱，提交。

3、系统通过该邮箱，从数据库中查找到该用户信息，并更新该用户的密码为一个临时密码（比如：12345678）。

4、系统借助Jmail功能把该用户的信息发送到该用户的邮箱中（内容包括：用户名、临时密码、提醒用户及时修改临时密码的提示语）。

5、用户用临时密码即可登录。

HTML

我们在找回密码的页面上放置一个要求用户输入注册时所用的邮箱，然后提交前台js来处理交互。

代码如下	复制代码
输入您注册的电子邮箱，找回密码：

jQuery

当用户输入完邮箱并点击提交后，jQuery先验证邮箱格式是否正确，如果正确则通过向后台sendmail.php发送Ajax请求，sendmail.php负责验证邮箱是否存在和发送邮件，并会返回相应的处理结果给前台页面，请看jQuery代码：

代码如下

复制代码

$(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+" ");                 }             });         }     }); })

以上使用的jQuery代码很方便简洁的完成了前端交互操作，如果您有一定的jQuery基础，那上面的代码一目了然，不多解释。

当然别忘了在页面中加载jQuery库文件，有的同学经常问我说从www.bKjia.c0m下载了demo怎么用不了，那80%是jquery或者其他文件加载路径错了导致没加载必要的文件。
PHP

sendmail.php需要验证Email是否存在系统用户表中，如果有，则读取用户信息，将用户id、用户名和密码惊醒md5加密生成一个特别的字符串作为找回密码的验证码，然后构造URL。同时我们为了控制URL链接的时效性，将记录用户提交找回密码动作的操作时间，最后调用邮件发送类发送邮件到用户邮箱，发送邮件类smtp.class.php已经打包好，请下载。

代码如下

复制代码

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.bKjia.c0m - 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; }

好了，这个时候你的邮箱将会收到一封来自helloweba的密码找回邮件，邮件内容中有一个URL链接，点击该链接到www.bKjia.c0m的reset.php来验证邮箱。

代码如下

复制代码

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;

reset.php首先接受参数email和token，然后根据email查询数据表t_user中是否存在该Email，如果存在则获取该用户的信息，并且和sendmail.php中的token组合方式一样构建token值，然后与url传过来的token进行对比，如果当前时间与发送邮件时的时间相差超过24小时的，则提示“该链接已过期！”，反之，则说明链接有效，并且调转到重置密码页面，最后就是用户自己设置新密码了。

小结：通过注册邮箱验证与本文邮件找回密码，我们知道发送邮件在网站开发中的应用以及它的重要性，当然，现在也流行短信验证应用，这个需要相关的短信接口对接就可以了。

最后，附上数据表t_user结构：

代码如下	复制代码
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;

smtp.class.php类文件

代码如下

复制代码

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: $fromrn";   $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: 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 n");    } else {     $this->log_write("Error: Cannot send email 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:")) {    return $this->smtp_error("sending MAIL FROM command");   }   if (!$this->smtp_putcmd("RCPT", "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 . "    ;";   }  } } ?>

最后面有个数据库连接类，这里就不介绍了大大家可以百本站找相关的数据库连接mysql类哦。

http://www.bkjia.com/PHPjc/633135.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/633135.htmlTechArticle如果你做的网站有会员系统那必须就自动找回密码功能了，也就是忘记密码功能，如果用户忘记了密码可以通过邮箱或手机号直接找回密码...