要求
1）实现Email形式的注册功能和相应的登录功能；
2）实现忘记密码时的密码找回功能；
3）存在数据库中的密码不能以明文形式存放，即建议在浏览器端发送请求前，调用js代码对用户的密码做md5加密
分析
第3）点较简单，重点学习一波email接收验证码。
网上粗略了解了一下，PHP自带mail()函数可实现邮件的收发，但在php5.3版本后需开启本地email服务器才能使用。
所以搭建了hmailserver服务，具体参考：
mysql+hmailServer+roundcubemail整合开发（一）
文件拓扑
代码及演示
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>web实验2</title>
<script type="text/javascript" src="function.js"></script>
<script type="text/javascript" src="md5.js"></script>
</head>
<body> <form name="fm1" action="index.php" method="post" onsubmit="return IsEmpty()">
<div style="text-align: center;">
<h1>登录页面 </h1><br><br><br>
<input type="text" name="user" placeholder="帐号" id="usr"/>
<select name="mail">
<option value="@163.com">@.com</option>
<option value="@126.com">@.com</option>
<option value="@hdu.edu.cn">@hdu.edu.cn</option>
</select>
</br><input type="password" name="password_plain" placeholder="密码" id="pwd"/>
<input type=hidden name="password_md5" id="pwd1" />
<a href="resetpwd.php">忘记密码?</a>
</br>
<input type="submit" name="submit" value="登录" onclick="enCodePWD()"/>
<button onclick="location.href='register.php'" type="button">注册</button>
</div>
</form>
</body>
</html>
login.php
当登录为空
亦或
<!DOCTYPE html>
<html>
<html>
<head>
<meta charset="UTF-8">
<title>web实验2</title>
<script type="text/javascript" src="function.js"></script>
<script type="text/javascript" src="md5.js"></script>
</head>
<body> <form name="fm1" action="" method="post" onsubmit="return IsEmpty()">
<div style="text-align: center;">
<h1>注册页面 </h1><br><br><br>*
<input type="text" name="user" placeholder="帐号" id="usr"/>
<select name="mail">
<option value="@163.com">@.com</option>
<option value="@126.com">@.com</option>
<option value="@hdu.edu.cn">@hdu.edu.cn</option>
</select>
</br>*
<input type="password" name="password_plain" placeholder="密码" id="pwd"/>
<input type=hidden name="password_md5" id="pwd1" />
</br> *
<input type="text" name="code" placeholder="验证码" id="cd"/>
<button type="submit" name="bttn" value="" onclick="IsEmpty()">点击获取验证码</button>
</br>
<input type="submit" name="submit" value="注册" onclick="enCodePWD()"/>
</div>
</form>
</body>
</html> <?php
$servername = "localhost";$usernm = "root";$passwd = "root";$dbname = "test";
@$c_user=@$_POST['user'].@$_POST['mail'];@$c_password=@$_POST['password_md5'];
if((@$_POST['submit'] || @$_POST['bttn']) && $_POST['user'] && $_POST['password_plain']){
// 创建连接
$conn = mysqli_connect($servername, $usernm, $passwd, $dbname);
// 检测连接
if (!$conn) {
die("连接失败: ".mysqli_connect_error());
}
else{
@$sql = "SELECT * FROM client where user='".$c_user."'";
$result = mysqli_query($conn, $sql);
//检错
if (!$result) {
printf("Error: %s\n", mysqli_error($conn));
exit();
}
//查询用户是否存在
if (mysqli_num_rows($result)) {
echo '<script>alert("用户已存在！");history.go(-1);</script>';
}
else{
if(@$_POST['bttn'])
include_once("reqcode.php");
else
include_once("reg.php");
}
$conn->close();
}
}
?>
register.php
先判断账号/密码是否为空/合法
没输入验证码就注册
注册用户已存在
否则
登录邮箱接收验证码
验证码有效时间1分钟
成功注册，3s后自动跳转login.php
<!DOCTYPE html>
<html>
<html>
<head>
<meta charset="UTF-8">
<title>web实验2</title>
<script type="text/javascript" src="function.js"></script>
<script type="text/javascript" src="md5.js"></script>
</head>
<body> <form name="fm1" action="" method="post">
<div style="text-align: center;">
<h1>更改密码 </h1><br><br><br>*
<input type="text" name="user" placeholder="帐号" id="usr"/>
<select name="mail">
<option value="@163.com">@.com</option>
<option value="@126.com">@.com</option>
<option value="@hdu.edu.cn">@hdu.edu.cn</option>
</select>
</br>*
<input type="password" name="password_plain" placeholder="新密码" id="pwd"/>
<br>*
<input type="password" name="password_cfm" placeholder="确认密码" onblur="return confirm_pwd()" id="pwd2"/></input>
<input type=hidden name="password_md5" id="pwd1" />
</br> *
<input type="text" name="code" placeholder="验证码" id="cd"/>
<button type="submit" name="bttn" value="" onclick="IsEmpty()">点击获取验证码</button>
</br>
<input type="submit" name="submit" value="提交" onclick="enCodePWD()"/>
</div>
</form>
</body>
</html> <?php
$servername = "localhost";$usernm = "root";$passwd = "root";$dbname = "test";
@$c_user=@$_POST['user'].@$_POST['mail'];@$c_password=@$_POST['password_md5'];
if((@$_POST['submit'] || @$_POST['bttn']) && $_POST['user'] && $_POST['password_plain'] && $_POST['password_cfm']){
// 创建连接
$conn = mysqli_connect($servername, $usernm, $passwd, $dbname);
// 检测连接
if (!$conn) {
die("连接失败: ".mysqli_connect_error());
}
else{
@$sql = "SELECT * FROM client where user='".$c_user."'";
$result = mysqli_query($conn, $sql);
//查询用户是否存在
if (mysqli_num_rows($result)) {
if(@$_POST['bttn'])
include_once("reqcode.php");
else
include_once("chng.php");
}
else{
echo '<script>alert("用户不存在！");history.go(-1);</script>';
}
$conn->close();
}
}
?>
resetpwd.php
确认密码不一致
成功修改
（其他演示同注册页面）
<?php
$servername = "localhost";$usernm = "root";$passwd = "root";$dbname = "test";
if(@$_POST['submit']){
$c_user=$_POST['user'].$_POST['mail'];$c_password=$_POST['password_md5'];
}
// 创建连接
$conn = mysqli_connect($servername, $usernm, $passwd, $dbname);
// 检测连接
if (!$conn) {
die("连接失败: ".mysqli_connect_error());
}
else{
@$sql = "SELECT * FROM client where user='".$c_user."' and "."password='".$c_password."'";
$result = mysqli_query($conn, $sql);
//检错
if (!$result) {
printf("Error: %s\n", mysqli_error($conn));
exit();
}
//查询成功
if (mysqli_num_rows($result)) {
//输出数据
$row = mysqli_fetch_assoc($result);
$username=$row["user"];
echo "Welcome~：".$username."<br>"."Ur password~：".$row["password"];
}
else{
echo '<script>alert("用户名或密码错误！");history.go(-1);</script>'; }
$conn->close();
}
?>
index.php
<?php session_start(); $rd = rand(,);
$to = $c_user;
$subject = "验证码";
$message = $rd;
$from = "server@test4fun.cn";
$headers = "From: $from";
if(mail($to,$subject,$message,$headers)){
echo "<br><br><div style='text-align: center;'>:)<br>验证码已发送至邮箱：".$c_user."<br>注册密码：".$_POST['password_plain']."<br>请注意查收！！！</div>";
} setcookie('rd', $rd, time()+*);//验证码
setcookie('tm', time(), time()+*);//验证码失效时间的起始时间戳 ?>
reqcode.php
<?php
//检测验证码是否为空
if(!$_POST['code']){
echo '<script>alert("验证码为空！");history.go(-1);</script>';
exit();
}
//验证码失效时间为60秒
if (time() - @$_COOKIE['tm'] < ){
if ($_POST['code'] == $_COOKIE["rd"]) {
@$sqli = "INSERT INTO client (user,password) VALUES ('".$c_user."','".$c_password."')";
$result = mysqli_query($conn, $sqli);
if ($result) {
header('refresh:3; url=login.php');
echo "<br><br><div style='text-align: center;'>):<br>注册成功,请登录!</div>";;
}
}
else{
echo "<br><br><div style='text-align: center;'>:(<br>验证码错误!</div>";
}
}
else{
echo "<br><br><div style='text-align: center;'>:(<br>验证码已过期!</div>";
} ?>
reg.php
<?php
//检测验证码是否为空
if(!$_POST['code']){
echo '<script>alert("验证码为空！");history.go(-1);</script>';
exit();
}
//验证码失效时间为60秒
if (time() - @$_COOKIE['tm'] < ){
if ($_POST['code'] == $_COOKIE["rd"]) {
@$sqli = "UPDATE client SET password = '".$c_password."' WHERE user = '".$c_user."'";
$result = mysqli_query($conn, $sqli);
if ($result) {
header('refresh:3; url=login.php');
echo "<br><br><div style='text-align: center;'>):<br>密码修改成功,请登录!</div>";;
}
}
else{
echo "<br><br><div style='text-align: center;'>:(<br>验证码错误!</div>";
}
}
else{
echo "<br><br><div style='text-align: center;'>:(<br>验证码已过期!</div>";
} ?>
chng.php
//md5加密密码
function enCodePWD(){
document.getElementById('pwd1').value=md5(document.getElementById('pwd').value);
} function IsEmpty(){
var usr = document.getElementById("usr");
//判断用户名是否为空
if(usr.value==""){
alert(":( 用户名不能为空!");
return false;
}
//判断用户名是否合法
if(/^[a-zA-Z0-]{,}$/.test(usr.value) != true){
alert(":( 用户名不合法!");
return false;
}
var passwd = document.getElementById("pwd");
//判断密码是否为空
if(passwd.value==""){
alert(":( 密码不能为空!");
return false;
}
return true;
} function confirm_pwd(){
var passwd = document.getElementById("pwd");
var passwd_cfm = document.getElementById("pwd2");
if(passwd.value != passwd_cfm.value){
alert("密码不一致");
passwd_cfm.value = "";
return false;
}
return true;
} /*
var wait=11;
function renew_btn(){
var btn=document.getElementById("btn");
if(wait == 0){
btn.removeAttribute("disabled");
btn.innerHTML="重新获取验证码";
wait=60;
}
else{
if(wait == 11){
alert("验证码已发送至你的邮箱，请尽快查收~！");
}
btn.setAttribute("disabled", true);
if(wait<10){
btn.innerHTML=" 重新发送(0"+wait+") ";
}
else{
btn.innerHTML=" 重新发送("+wait+") ";
}
wait--;
setTimeout(function(){renew_btn()},1000)
}
}
*/
function.js
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md5.js