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）。
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
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
"+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，发送邮件类smtp.class.PHP已经打包好，请下载。
代码如下
$email = stripslashes(trim($_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,$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.cc - 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reset.PHP来验证邮箱。
代码如下
$email = stripslashes(trim($_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']>246060){
$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
代码如下
/ 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.cc): $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,$this->strip_comment($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,$to,$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 $this->smtp_error("sending
}
if (!$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,$this->time_out);
if (!($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);
$address = ereg_replace("^.<(.+)>.$",$address);
return $address;
}
function smtp_debug($message) {
if ($this->debug) {
echo $message . "
;";
}
}
}
?>
最后面有个数据库连接类，这里就不介绍了大家可以百本站找相关的数据库连接MysqL类哦
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，也希望大家多多支持编程之家。
