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
- <p><strong>输入您注册的电子邮箱,找回密码:</strong></p>
- <p><input type="text" class="input" name="email" id="email"><span id="chkmsg"></span></p>
- <p><input type="button" class="btn" id="sub_btn" value="提 交"></p>
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
- $(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("<h3>"+msg+"</h3>");
- }
- });
- }
- });
- })
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网上下载了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
代码如下
- 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
- $msg = '系统已向您的邮箱发送了一封邮件<br/>请登录到您的邮箱及时重置您的密码!';
- //更新数据发送时间
- mysql_query("update `t_user` set `getpasstime`='$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.jb51.net - 找回密码";
- $emailbody = "亲爱的".$email.":<br/>您在".$time."提交了找回密码请求。请点击下面的链接重置密码
- (按钮24小时内有效)。<br/><a href='".$url."'target='_blank'>".$url."</a>";
- $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reset.php来验证邮箱。
代码如下
- 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,<br/>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
- 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
- <?php
- 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(www.jb51.net): $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 $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
- }
- if (!$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 . "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 . "
- ;";
- }
- }
- }
- ?>
以上这篇PHP会员找回密码功能的简单实现就是小编分享给大家的全部内容了,希望能给大家一个参考