用户认证是一种标准的安全机制，它允许被识别的用户访问任何数字应用程序或网站。它严格防止身份不明的用户访问网络或移动应用程序。
我们在日常生活中使用 Facebook、Twitter、Gmail 等数字产品，我们几乎熟悉用户注册和登录机制。您可以在登录这些应用程序之前创建一个帐户，这样您就可以使用它们的功能。
我们将学到什么：
在本文中，我们将重点介绍使用 PHP 和 MySQL 构建完整的登录和注册系统所需的一些核心功能。
- 使用 Bootstrap 4 创建登录和注册表单
- 与 PHP 项目建立 MySQL 数据库连接
- 在会话中管理用户数据
- PHP服务器端验证
- 处理错误消息
- 使用 SwiftMailer 插件发送用户验证邮件
- 使用密码哈希机制保护密码
- 密码验证
- 基于用户登录状态的 URL 重定向
- 使用 PHP 会话显示登录用户的数据
- 注销并销毁会话
目录
先决条件
在开始创建安全的 PHP 8 登录和用户注册系统之前，您必须使用MAMP或XAMPP设置本地 Web 服务器。
您还可以按照本教程在 Mac 上设置 MySQL 并在终端应用程序中配置 MySQL。
PHP 8 文件和文件夹结构
打开MAMP或XAMPP并启动您的 Web 服务器，然后转到htdocs文件夹并创建以下文件夹和文件，这些文件夹和文件对于开发我们的用户身份验证系统至关重要。
\-- php-user-authentication
|-- config
|--- db.php
|-- controllers
|--- login.php
|--- register.php
|--- user_activation.php
|-- css
|--- style.css
|-- lib
|--- 3rd party plugins
|-- dashboard.php
|-- header.php
|-- index.php
|-- logout.php
|-- signup.php
|-- user_verification.php
CSS
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在 MySQL 中创建数据库和表
我们的本地 Web 服务器已启动并正在运行，请转到PHPMyAdmin。
首先创建数据库`your_database_name`。
`table_name`在 MySQL 数据库中创建表。
您可以手动创建列，甚至可以从SQL选项卡执行以下 sql 脚本来创建具有以下值的列。
CREATE TABLE `users` (
`id` int(11) NOT NULL,
`firstname` varchar(100) NOT NULL,
`lastname` varchar(100) NOT NULL,
`email` varchar(50) NOT NULL,
`mobilenumber` varchar(50) NOT NULL,
`password` varchar(255) NOT NULL,
`token` varchar(255) NOT NULL,
`is_active` enum('0','1') NOT NULL,
`date_time` date NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
PL/SQL
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连接数据库
在config/db.php文件中添加以下代码。
<?php
// Enable us to use Headers
ob_start();
// Set sessions
if(!isset($_SESSION)) {
session_start();
}
$hostname = "localhost";
$username = "phpdemo";
$password = "4Mu99BhzK8dr4vF1";
$dbname = "positronx_db";
$connection = mysqli_connect($hostname, $username, $password, $dbname) or die("Database connection not established.")
?>
PHP
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ob_start()方法密切关注输出缓冲并允许我们使用 Header。
$_SESSION允许我们保存可以在 PHP 应用程序中使用的数据，只要浏览器窗口打开，会话就处于活动状态。
使用 Bootstrap 4 设计用户注册和登录表单 UI
要设计用户注册和登录表单 UI，我们使用 Bootstrap 4，在 HTML 布局的头部添加 Bootstrap CSS、JavaScript 和 jQuery 链接。
在signup.php中添加以下代码。
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<link rel="stylesheet" href="./css/style.css">
<title>PHP User Registration System Example</title>
<!-- jQuery + Bootstrap JS -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
</head>
<body>
<div class="App">
<div class="vertical-center">
<div class="inner-block">
<form action="" method="post">
<h3>Register</h3>
<div class="form-group">
<label>First name</label>
<input type="text" class="form-control" name="firstname" id="firstName" />
</div>
<div class="form-group">
<label>Last name</label>
<input type="text" class="form-control" name="lastname" id="lastName" />
</div>
<div class="form-group">
<label>Email</label>
<input type="email" class="form-control" name="email" id="email" />
</div>
<div class="form-group">
<label>Mobile</label>
<input type="text" class="form-control" name="mobilenumber" id="mobilenumber" />
</div>
<div class="form-group">
<label>Password</label>
<input type="password" class="form-control" name="password" id="password" />
</div>
<button type="submit" name="submit" id="submit" class="btn btn-outline-primary btn-lg btn-block">
Sign up
</button>
</form>
</div>
</div>
</div>
</body>
</html>
标记
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在index.php中添加以下代码以创建登录表单布局。
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<link rel="stylesheet" href="css/style.css">
<title>PHP Login System</title>
<!-- jQuery + Bootstrap JS -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
</head>
<body>
<!-- Login form -->
<div class="App">
<div class="vertical-center">
<div class="inner-block">
<form action="" method="post">
<h3>Login</h3>
<div class="form-group">
<label>Email</label>
<input type="email" class="form-control" name="email_signin" id="email_signin" />
</div>
<div class="form-group">
<label>Password</label>
<input type="password" class="form-control" name="password_signin" id="password_signin" />
</div>
<button type="submit" name="login" id="sign_in"
class="btn btn-outline-primary btn-lg btn-block">Sign
in</button>
</form>
</div>
</div>
</div>
</body>
</html>
标记
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要在 PHP 用户身份验证应用程序中添加样式，请转到css/style.css并添加以下代码。
* {
box-sizing: border-box;
}
body {
font-weight: 400;
background-color: #EEEFF4;
}
body,
html,
.App,
.vertical-center {
width: 100%;
height: 100%;
}
.navbar {
background: #1833FF !important;
width: 100%;
}
.btn-outline-primary {
border-color: #1833FF;
color: #1833FF;
}
.btn-outline-primary:hover {
background-color: #1833FF;
color: #ffffff;
}
.vertical-center {
display: flex;
text-align: left;
justify-content: center;
flex-direction: column;
}
.inner-block {
width: 450px;
margin: auto;
background: #ffffff;
box-shadow: 0px 14px 80px rgba(34, 35, 58, 0.2);
padding: 40px 55px 45px 55px;
transition: all .3s;
border-radius: 20px;
}
.vertical-center .form-control:focus {
border-color: #2554FF;
box-shadow: none;
}
.vertical-center h3 {
text-align: center;
margin: 0;
line-height: 1;
padding-bottom: 20px;
}
label {
font-weight: 500;
}
CSS
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建立用户注册系统
要创建一个安全的用户注册系统，我们需要进入controllers/register.php文件并将以下代码放入其中。
<?php
// Database connection
include('config/db.php');
// Swiftmailer lib
require_once './lib/vendor/autoload.php';
// Error & success messages
global $success_msg, $email_exist, $f_NameErr, $l_NameErr, $_emailErr, $_mobileErr, $_passwordErr;
global $fNameEmptyErr, $lNameEmptyErr, $emailEmptyErr, $mobileEmptyErr, $passwordEmptyErr, $email_verify_err, $email_verify_success;
// Set empty form vars for validation mapping
$_first_name = $_last_name = $_email = $_mobile_number = $_password = "";
if(isset($_POST["submit"])) {
$firstname = $_POST["firstname"];
$lastname = $_POST["lastname"];
$email = $_POST["email"];
$mobilenumber = $_POST["mobilenumber"];
$password = $_POST["password"];
// check if email already exist
$email_check_query = mysqli_query($connection, "SELECT * FROM users WHERE email = '{$email}' ");
$rowCount = mysqli_num_rows($email_check_query);
// PHP validation
// Verify if form values are not empty
if(!empty($firstname) && !empty($lastname) && !empty($email) && !empty($mobilenumber) && !empty($password)){
// check if user email already exist
if($rowCount > 0) {
$email_exist = '
<div class="alert alert-danger" role="alert">
User with email already exist!
</div>
';
} else {
// clean the form data before sending to database
$_first_name = mysqli_real_escape_string($connection, $firstname);
$_last_name = mysqli_real_escape_string($connection, $lastname);
$_email = mysqli_real_escape_string($connection, $email);
$_mobile_number = mysqli_real_escape_string($connection, $mobilenumber);
$_password = mysqli_real_escape_string($connection, $password);
// perform validation
if(!preg_match("/^[a-zA-Z ]*$/", $_first_name)) {
$f_NameErr = '<div class="alert alert-danger">
Only letters and white space allowed.
</div>';
}
if(!preg_match("/^[a-zA-Z ]*$/", $_last_name)) {
$l_NameErr = '<div class="alert alert-danger">
Only letters and white space allowed.
</div>';
}
if(!filter_var($_email, FILTER_VALIDATE_EMAIL)) {
$_emailErr = '<div class="alert alert-danger">
Email format is invalid.
</div>';
}
if(!preg_match("/^[0-9]{10}+$/", $_mobile_number)) {
$_mobileErr = '<div class="alert alert-danger">
Only 10-digit mobile numbers allowed.
</div>';
}
if(!preg_match("/^(?=.*\d)(?=.*[@#\-_$%^&+=§!\?])(?=.*[a-z])(?=.*[A-Z])[0-9A-Za-z@#\-_$%^&+=§!\?]{6,20}$/", $_password)) {
$_passwordErr = '<div class="alert alert-danger">
Password should be between 6 to 20 charcters long, contains atleast one special chacter, lowercase, uppercase and a digit.
</div>';
}
// Store the data in db, if all the preg_match condition met
if((preg_match("/^[a-zA-Z ]*$/", $_first_name)) && (preg_match("/^[a-zA-Z ]*$/", $_last_name)) &&
(filter_var($_email, FILTER_VALIDATE_EMAIL)) && (preg_match("/^[0-9]{10}+$/", $_mobile_number)) &&
(preg_match("/^(?=.*\d)(?=.*[@#\-_$%^&+=§!\?])(?=.*[a-z])(?=.*[A-Z])[0-9A-Za-z@#\-_$%^&+=§!\?]{8,20}$/", $_password))){
// Generate random activation token
$token = md5(rand().time());
// Password hash
$password_hash = password_hash($password, PASSWORD_BCRYPT);
// Query
$sql = "INSERT INTO users (firstname, lastname, email, mobilenumber, password, token, is_active,
date_time) VALUES ('{$firstname}', '{$lastname}', '{$email}', '{$mobilenumber}', '{$password_hash}',
'{$token}', '0', now())";
// Create mysql query
$sqlQuery = mysqli_query($connection, $sql);
if(!$sqlQuery){
die("MySQL query failed!" . mysqli_error($connection));
}
// Send verification email
if($sqlQuery) {
$msg = 'Click on the activation link to verify your email. <br><br>
<a href="http://localhost:8888/php-user-authentication/user_verificaiton.php?token='.$token.'"> Click here to verify email</a>
';
// Create the Transport
$transport = (new Swift_SmtpTransport('smtp.gmail.com', 465, 'ssl'))
->setUsername('your_email@gmail.com')
->setPassword('your_email_password');
// Create the Mailer using your created Transport
$mailer = new Swift_Mailer($transport);
// Create a message
$message = (new Swift_Message('Please Verify Email Address!'))
->setFrom([$email => $firstname . ' ' . $lastname])
->setTo($email)
->addPart($msg, "text/html")
->setBody('Hello! User');
// Send the message
$result = $mailer->send($message);
if(!$result){
$email_verify_err = '<div class="alert alert-danger">
Verification email coud not be sent!
</div>';
} else {
$email_verify_success = '<div class="alert alert-success">
Verification email has been sent!
</div>';
}
}
}
}
} else {
if(empty($firstname)){
$fNameEmptyErr = '<div class="alert alert-danger">
First name can not be blank.
</div>';
}
if(empty($lastname)){
$lNameEmptyErr = '<div class="alert alert-danger">
Last name can not be blank.
</div>';
}
if(empty($email)){
$emailEmptyErr = '<div class="alert alert-danger">
Email can not be blank.
</div>';
}
if(empty($mobilenumber)){
$mobileEmptyErr = '<div class="alert alert-danger">
Mobile number can not be blank.
</div>';
}
if(empty($password)){
$passwordEmptyErr = '<div class="alert alert-danger">
Password can not be blank.
</div>';
}
}
}
?>
PHP
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包括处理用户数据的数据库。isset()方法在用户单击提交按钮时检查表单数据，该按钮与我们在注册表单中传递的相同名称属性。
使用 HTTP $_POST[”]方法提取用户数据，例如名字、姓氏、电子邮件、手机号码和密码。
使用 SQL 脚本通过mysqli_query()方法验证用户提供的电子邮件是否已存在于数据库中。
检查表单值是否不为空。
验证用户电子邮件是否已存在，然后使用 Bootstrap 警报消息组件显示错误。我们将错误消息设置为全局变量，以便我们可以将其显示给用户。
mysqli_real_escape_string ()方法在发送到数据库之前清理数据。
preg_match()方法对名称、手机名称和密码进行 PHP 验证。为了验证电子邮件值，我们使用了filter_var()方法。我们包装了错误并将其设置为全局。
我们需要使用md5(rand().time())方法生成随机令牌，以向用户电子邮件 ID 发送验证电子邮件。
为了安全地散列密码，我们使用了password_hash()方法。password_hash() 使用安全的单向散列算法创建一个新的密码散列。
我们需要安装 SwiftMailer php 插件来向用户发送验证邮件，我使用以下 composer 命令来安装 SwiftMailer 库。确保你的开发机器上安装了 composer。
composer require "swiftmailer/swiftmailer:^6.0"
重击
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我们需要导入SwiftMailer库并添加 SwiftMailer 脚本，同时定义将发送给用户的电子邮件模板。
现在，我们需要在signup.php文件中实现用户认证逻辑。
<?php include('./controllers/register.php'); ?>
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<link rel="stylesheet" href="./css/style.css">
<title>PHP User Registration System Example</title>
<!-- jQuery + Bootstrap JS -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
</head>
<body>
<?php include('./header.php'); ?>
<div class="App">
<div class="vertical-center">
<div class="inner-block">
<form action="" method="post">
<h3>Register</h3>
<?php echo $success_msg; ?>
<?php echo $email_exist; ?>
<?php echo $email_verify_err; ?>
<?php echo $email_verify_success; ?>
<div class="form-group">
<label>First name</label>
<input type="text" class="form-control" name="firstname" id="firstName" />
<?php echo $fNameEmptyErr; ?>
<?php echo $f_NameErr; ?>
</div>
<div class="form-group">
<label>Last name</label>
<input type="text" class="form-control" name="lastname" id="lastName" />
<?php echo $l_NameErr; ?>
<?php echo $lNameEmptyErr; ?>
</div>
<div class="form-group">
<label>Email</label>
<input type="email" class="form-control" name="email" id="email" />
<?php echo $_emailErr; ?>
<?php echo $emailEmptyErr; ?>
</div>
<div class="form-group">
<label>Mobile</label>
<input type="text" class="form-control" name="mobilenumber" id="mobilenumber" />
<?php echo $_mobileErr; ?>
<?php echo $mobileEmptyErr; ?>
</div>
<div class="form-group">
<label>Password</label>
<input type="password" class="form-control" name="password" id="password" />
<?php echo $_passwordErr; ?>
<?php echo $passwordEmptyErr; ?>
</div>
<button type="submit" name="submit" id="submit" class="btn btn-outline-primary btn-lg btn-block">Sign up
</button>
</form>
</div>
</div>
</div>
</body>
</html>
PHP
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PHP 8 中的用户电子邮件验证脚本
我们在register.php文件中定义了 SwiftMailer 配置，现在实现用户验证脚本发送验证邮件。
在controllers/user_activation.php文件中添加以下代码。
<?php
// Database connection
include('./config/db.php');
global $email_verified, $email_already_verified, $activation_error;
// GET the token = ?token
if(!empty($_GET['token'])){
$token = $_GET['token'];
} else {
$token = "";
}
if($token != "") {
$sqlQuery = mysqli_query($connection, "SELECT * FROM users WHERE token = '$token' ");
$countRow = mysqli_num_rows($sqlQuery);
if($countRow == 1){
while($rowData = mysqli_fetch_array($sqlQuery)){
$is_active = $rowData['is_active'];
if($is_active == 0) {
$update = mysqli_query($connection, "UPDATE users SET is_active = '1' WHERE token = '$token' ");
if($update){
$email_verified = '<div class="alert alert-success">
User email successfully verified!
</div>
';
}
} else {
$email_already_verified = '<div class="alert alert-danger">
User email already verified!
</div>
';
}
}
} else {
$activation_error = '<div class="alert alert-danger">
Activation error!
</div>
';
}
}
?>
PHP
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在user_verification.php文件中添加以下代码。
<?php include('./controllers/user_activation.php'); ?>
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<link rel="stylesheet" href="./css/style.css">
<title>User Verification</title>
<!-- jQuery + Bootstrap JS -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<div class="jumbotron text-center">
<h1 class="display-4">User Email Verification Demo</h1>
<div class="col-12 mb-5 text-center">
<?php echo $email_already_verified; ?>
<?php echo $email_verified; ?>
<?php echo $activation_error; ?>
</div>
<p class="lead">If user account is verified then click on the following button to login.</p>
<a class="btn btn-lg btn-success" href="http://localhost:8888/php-user-authentication/index.php"
>Click to Login
</a>
</div>
</div>
</body>
</html>
PHP
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使用 MySQL 构建 PHP 8 登录系统
以下代码仅允许访问已验证其电子邮件地址的用户。未经验证的用户无法在应用程序中访问，我们还将登录用户的数据存储到 PHP Session 中，并借助header(“Location: page_url.php”)方法将登录用户重定向到dashboard.php 页面。
要创建 PHP MySQL 登录系统，请在controllers/login.php文件中添加以下代码。
<?php
// Database connection
include('config/db.php');
global $wrongPwdErr, $accountNotExistErr, $emailPwdErr, $verificationRequiredErr, $email_empty_err, $pass_empty_err;
if(isset($_POST['login'])) {
$email_signin = $_POST['email_signin'];
$password_signin = $_POST['password_signin'];
// clean data
$user_email = filter_var($email_signin, FILTER_SANITIZE_EMAIL);
$pswd = mysqli_real_escape_string($connection, $password_signin);
// Query if email exists in db
$sql = "SELECT * From users WHERE email = '{$email_signin}' ";
$query = mysqli_query($connection, $sql);
$rowCount = mysqli_num_rows($query);
// If query fails, show the reason
if(!$query){
die("SQL query failed: " . mysqli_error($connection));
}
if(!empty($email_signin) && !empty($password_signin)){
if(!preg_match("/^(?=.*\d)(?=.*[@#\-_$%^&+=§!\?])(?=.*[a-z])(?=.*[A-Z])[0-9A-Za-z@#\-_$%^&+=§!\?]{6,20}$/", $pswd)) {
$wrongPwdErr = '<div class="alert alert-danger">
Password should be between 6 to 20 charcters long, contains atleast one special chacter, lowercase, uppercase and a digit.
</div>';
}
// Check if email exist
if($rowCount <= 0) {
$accountNotExistErr = '<div class="alert alert-danger">
User account does not exist.
</div>';
} else {
// Fetch user data and store in php session
while($row = mysqli_fetch_array($query)) {
$id = $row['id'];
$firstname = $row['firstname'];
$lastname = $row['lastname'];
$email = $row['email'];
$mobilenumber = $row['mobilenumber'];
$pass_word = $row['password'];
$token = $row['token'];
$is_active = $row['is_active'];
}
// Verify password
$password = password_verify($password_signin, $pass_word);
// Allow only verified user
if($is_active == '1') {
if($email_signin == $email && $password_signin == $password) {
header("Location: ./dashboard.php");
$_SESSION['id'] = $id;
$_SESSION['firstname'] = $firstname;
$_SESSION['lastname'] = $lastname;
$_SESSION['email'] = $email;
$_SESSION['mobilenumber'] = $mobilenumber;
$_SESSION['token'] = $token;
} else {
$emailPwdErr = '<div class="alert alert-danger">
Either email or password is incorrect.
</div>';
}
} else {
$verificationRequiredErr = '<div class="alert alert-danger">
Account verification is required for login.
</div>';
}
}
} else {
if(empty($email_signin)){
$email_empty_err = "<div class='alert alert-danger email_alert'>
Email not provided.
</div>";
}
if(empty($password_signin)){
$pass_empty_err = "<div class='alert alert-danger email_alert'>
Password not provided.
</div>";
}
}
}
?>
PHP
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要在登录页面中实现登录逻辑，请在controllers/index.php文件中添加以下代码。
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<link rel="stylesheet" href="css/style.css">
<title>PHP User Registration & Login System Demo</title>
<!-- jQuery + Bootstrap JS -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
</head>
<body>
<!-- Header -->
<?php include('../php-user-authentication/header.php'); ?>
<!-- Login script -->
<?php include('./controllers/login.php'); ?>
<!-- Login form -->
<div class="App">
<div class="vertical-center">
<div class="inner-block">
<form action="" method="post">
<h3>Login</h3>
<?php echo $accountNotExistErr; ?>
<?php echo $emailPwdErr; ?>
<?php echo $verificationRequiredErr; ?>
<?php echo $email_empty_err; ?>
<?php echo $pass_empty_err; ?>
<div class="form-group">
<label>Email</label>
<input type="email" class="form-control" name="email_signin" id="email_signin" />
</div>
<div class="form-group">
<label>Password</label>
<input type="password" class="form-control" name="password_signin"
id="password_signin" />
</div>
<button type="submit" name="login" id="sign_in" class="btn btn-outline-primary btn-lg btn-block">Sign
in</button>
</form>
</div>
</div>
</div>
</body>
</html>
PHP
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显示登录用户的数据和注销脚本
在dashboard.php中添加以下代码，仅向登录用户显示用户数据。
<?php include('config/db.php'); ?>
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<link rel="stylesheet" href="./css/style.css">
<title>PHP User Registration System Example</title>
<!-- jQuery + Bootstrap JS -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container mt-5">
<div class="d-flex justify-content-center">
<div class="card" style="width: 25rem">
<div class="card-body">
<h5 class="card-title text-center mb-4">User Profile</h5>
<h6 class="card-subtitle mb-2 text-muted"><?php echo $_SESSION['firstname']; ?>
<?php echo $_SESSION['lastname']; ?></h6>
<p class="card-text">Email address: <?php echo $_SESSION['email']; ?></p>
<p class="card-text">Mobile number: <?php echo $_SESSION['mobilenumber']; ?></p>
<a class="btn btn-danger btn-block" href="logout.php">Log out</a>
</div>
</div>
</div>
</div>
</body>
</html>
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现在，我们需要销毁会话以从用户身份验证系统中注销用户。我们已经将 logout.php 链接传递给仪表板文件中的注销按钮。
打开logout.php并将以下代码放入其中。
<?php
session_start();
session_destroy();
header("Location: http://localhost:8888/php-user-authentication/index.php")
;?>
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结论
因此，这是 PHP 8 用户身份验证和登录应用程序。我希望您对我们如何使用 PHP 和 MySQL 进行登录和身份验证系统有基本的了解。我们介绍了一些基本主题，例如向用户发送验证电子邮件、安全地散列密码。
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
