By GokiSoft.com| 20:09 08/05/2021|
Học PHP

[Video] Bài tập - Tạo trang login và register - kết nối CSDL trong PHP - Lập trình PHP/MySQL - C2010L


#users.php


<?php
require_once ('../db/dbhelper.php');

$sql      = "select * from bt2276_users";
$userList = executeResult($sql);
?>
<!DOCTYPE html>
<html>
<head>
	<title>Users Page</title>
	<!-- Latest compiled and minified CSS -->
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">

	<!-- jQuery library -->
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>

	<!-- Popper JS -->
	<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>

	<!-- Latest compiled JavaScript -->
	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
</head>
<body>
	<div class="container">
		<div class="panel panel-primary">
			<div class="panel-heading">
				<h2 class="text-center">Users Page</h2>
			</div>
			<div class="panel-body">
				<table class="table table-bordered">
					<thead>
						<tr>
							<th>No</th>
							<th>User Name</th>
							<th>Email</th>
							<th style="width: 50px;"></th>
							<th style="width: 50px;"></th>
						</tr>
					</thead>
					<tbody>
<?php
$count = 0;
foreach ($userList as $item) {
	echo '<tr>
			<td>'.(++$count).'</td>
			<td>'.$item['username'].'</td>
			<td>'.$item['email'].'</td>
			<td><button class="btn btn-warning">Edit</button></td>
			<td><button class="btn btn-danger" onclick="deleteUsers(\''.$item['username'].'\')">Delete</button></td>
		</tr>';
}
?>
					</tbody>
				</table>
			</div>
		</div>
	</div>
<script type="text/javascript">
	function deleteUsers(username) {
		option = confirm('Are you sure to delete this user?')
		if(!option) return

		$.post('form-delete.php', {
			'username': username
		}, function(data) {//callback -> khi du lieu dc tra ve tu server
			location.reload() //load website -> khong load cung dc -> su dung jquery de update data -> tuy vao nghiep cua du an.
		})
	}
</script>
</body>
</html>


#register.php


<?php
require_once ('form-user.php');
?>

<!DOCTYPE html>
<html>
<head>
	<title>Registation Page</title>
	<!-- Latest compiled and minified CSS -->
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">

	<!-- jQuery library -->
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>

	<!-- Popper JS -->
	<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>

	<!-- Latest compiled JavaScript -->
	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
</head>
<body>
	<div class="container">
		<div class="panel panel-primary">
			<div class="panel-heading">
				<h2 class="text-center">Registation Page</h2>
			</div>
			<div class="panel-body">
				<form method="post" id="RegisterForm">
					<div class="form-group">
					  <label for="usr">User Name:</label>
					  <input required="true" type="text" class="form-control" id="usr" name="username" pattern="[a-zA-Z0-9]{3,}">
					</div>
					<div class="form-group">
					  <label for="email">Email:</label>
					  <input required="true" type="email" class="form-control" id="email" name="email">
					</div>
					<div class="form-group">
					  <label for="pwd">Password:</label>
					  <input required="true" type="password" class="form-control" id="pwd" name="password">
					</div>
					<div class="form-group">
					  <label for="confirmation_pwd">Confirmation Password:</label>
					  <input required="true" type="password" class="form-control" id="confirmation_pwd" name="confirmation_pwd">
					</div>
					<button class="btn btn-success">Register</button>
				</form>
			</div>
		</div>
	</div>
<script type="text/javascript">
	$(function() {
		$('#RegisterForm').submit(function() {
			if($('[name=password]').val() != $('[name=confirmation_pwd]').val()) {
				alert('Password is not matching, plz check it again!!!')
				return false;
			}
			return true;
		})
	})
</script>
</body>
</html>


#login.php


<?php
require_once ('form-login.php');
?>

<!DOCTYPE html>
<html>
<head>
	<title>Registation Page</title>
	<!-- Latest compiled and minified CSS -->
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">

	<!-- jQuery library -->
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>

	<!-- Popper JS -->
	<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>

	<!-- Latest compiled JavaScript -->
	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
</head>
<body>
	<div class="container">
		<div class="panel panel-primary">
			<div class="panel-heading">
				<h2 class="text-center">Login Page</h2>
			</div>
			<div class="panel-body">
				<form method="post">
					<div class="form-group">
					  <label for="usr">User Name:</label>
					  <input required="true" type="text" class="form-control" id="usr" name="username" pattern="[a-zA-Z0-9]{3,}">
					</div>
					<div class="form-group">
					  <label for="pwd">Password:</label>
					  <input required="true" type="password" class="form-control" id="pwd" name="password">
					</div>
					<button class="btn btn-success">Login</button>
				</form>
			</div>
		</div>
	</div>
</body>
</html>


#form-user.php


<?php
require_once ('../db/dbhelper.php');

$username = $password = $email = '';

if (!empty($_POST)) {
	$username = getPOST('username');
	$password = getPOST('password');
	$email    = getPOST('email');

	if ($username != '' && $password != '' && $email != '') {
		//save user into database
		$password = getPwdSecurity($password);

		$sql = "insert into bt2276_users (username, password, email) values ('$username', '$password', '$email')";
		// echo $sql;//SQL Injection
		execute($sql);

		//chuyen sang trang login.php
		header('Location: login.php');
		die();
	}
}


#form-login.php


<?php
require_once ('../db/dbhelper.php');

$username = $password = '';

if (!empty($_POST)) {
	$username = getPOST('username');
	$password = getPOST('password');

	if ($username != '' && $password != '') {
		//save user into database
		$password = getPwdSecurity($password);

		$sql   = "select * from bt2276_users where username = '$username' and password = '$password'";
		$users = executeResult($sql);

		if ($users != null && count($users) > 0) {
			//login successfully
			//chuyen sang trang login.php
			header('Location: users.php');
			die();
		}
	}
}


#form-delete.php


<?php
require_once ('../db/dbhelper.php');

$username = '';

if (!empty($_POST)) {
	$username = getPOST('username');

	if ($username != '') {
		$sql = "delete from bt2276_users where username = '$username'";
		execute($sql);
	}
}


#readme.txt


B1. Thiết kế database

create table users (
	username varchar(50) primary key,
	email varchar(150) not null,
	password varchar(32)
)

B2. Phát triển các chức năng trong dự án
Phân tích:
	- register.php
	- login.php
	- users.php -> Hiển thị danh sách người dùng trong database

- Phát triển các thư viên sử dụng cho dự án trước -> xây dựng bộ khung dự án -> xây dựng 1 framework của dự án.
	- config.php
	- dbhelper.php


#dbhelper.php


<?php
require_once ('config.php');

/**
 * Su dung cho lenh: insert/update/delete
 */
function execute($sql) {
	// Them du lieu vao database
	//B1. Mo ket noi toi database
	$conn = mysqli_connect(HOST, USERNAME, PASSWORD, DATABASE);
	mysqli_set_charset($conn, 'utf8');

	//B2. Thuc hien truy van insert
	mysqli_query($conn, $sql);

	//B3. Dong ket noi database
	mysqli_close($conn);
}
/**
 * Su dung cho lenh: select
 */
function executeResult($sql) {
	// Them du lieu vao database
	//B1. Mo ket noi toi database
	$conn = mysqli_connect(HOST, USERNAME, PASSWORD, DATABASE);
	mysqli_set_charset($conn, 'utf8');

	//B2. Thuc hien truy van insert
	$resultset = mysqli_query($conn, $sql);
	$data      = [];

	while (($row = mysqli_fetch_array($resultset, 1)) != null) {
		$data[] = $row;
	}

	//B3. Dong ket noi database
	mysqli_close($conn);

	return $data;
}

function getPwdSecurity($pwd) {
	return md5(md5($pwd).MD5_PRIVATE_KEY);
}

function getGET($key) {
	$value = '';
	if (isset($_GET[$key])) {
		$value = $_GET[$key];
	}
	$value = fixSqlInjection($value);
	return $value;
}

function getPOST($key) {
	$value = '';
	if (isset($_POST[$key])) {
		$value = $_POST[$key];
	}
	$value = fixSqlInjection($value);
	return $value;
}

function fixSqlInjection($str) {
	$str = str_replace("\\", "\\\\", $str);
	$str = str_replace("'", "\'", $str);
	return $str;
}


#config.php


<?php
define('HOST', 'localhost');
define('USERNAME', 'root');
define('PASSWORD', '');
define('DATABASE', 'C2010L');

define('MD5_PRIVATE_KEY', '09JJJjhh7834jHJG876312^&%shjdgsjagdasKoks');


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