By GokiSoft.com| 10:01 18/04/2022|
Học PHP

[Source Code] Tìm hiểu về session trong PHP - Khóa học PHP/MySQL

#login.php


<?php
session_start();

var_dump($_SESSION);

$email = $pwd = "";

if(!empty($_POST)) {
	//Lấy thông tin gửi từ form login gửi lên server
	$email = $_POST['email'];
	$pwd = $_POST['pwd'];

	//Lấy thông tin đã lưu trữ trong cookie
	$sEmail = $sPwd = "";
	if(isset($_SESSION['email'])) {
		$sEmail = $_SESSION['email'];
	}
	if(isset($_SESSION['email'])) {
		$sPwd = $_SESSION['pwd'];
	}

	if($email == $sEmail && $pwd == $sPwd) {
		header('Location: show.php');
		die();
	}
}
?>

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>Login Page</title>
	<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet">
	<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>

	<style type="text/css">
		.form-group {
			margin-bottom: 20px;
		}
	</style>
</head>
<body>
<div class="container">
	<form method="post">
		<div class="form-group">
			<label>Email: </label>
			<input required type="email" name="email" class="form-control">
		</div>
		<div class="form-group">
			<label>Password: </label>
			<input required type="password" name="pwd" class="form-control">
		</div>
		<div class="form-group">
			<p>
				<a href="register.php">Create a new account</a>
			</p>
			<button class="btn btn-success">Login</button>
		</div>
	</form>
</div>
</body>
</html>


#readme.txt


Ứng dụng:
- Viết trang register.php -> lưu vào session
- Viết trang login.php -> lấy nội dụng $_POST gửi lên & so sanh với $_SESSION -> khớp nhau -> show.php (Hiển thị thông tin người dùng) | ngược lại -> FAILED


#register.php


<?php
session_start();

$fullname = $birthday = $email = $address = $pwd = "";

if(!empty($_POST)) {
	$fullname = $_POST['fullname'];
	$birthday = $_POST['birthday'];
	$email = $_POST['email'];
	$address = $_POST['address'];
	$pwd = $_POST['pwd'];

	// Luu xuong session
	$_SESSION['fname'] = $fullname;
	$_SESSION['birthday'] = $birthday;
	$_SESSION['email'] = $email;
	$_SESSION['address'] = $address;
	$_SESSION['pwd'] = $pwd;
}

// var_dump($_SESSION);
?>

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>Register Page</title>
	<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet">
	<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>

	<style type="text/css">
		.form-group {
			margin-bottom: 20px;
		}
	</style>
</head>
<body>
<div class="container">
	<form method="post">
		<div class="form-group">
			<label>Full Name: </label>
			<input required type="text" name="fullname" class="form-control">
		</div>
		<div class="form-group">
			<label>Birthday: </label>
			<input type="date" name="birthday" class="form-control">
		</div>
		<div class="form-group">
			<label>Email: </label>
			<input required type="email" name="email" class="form-control">
		</div>
		<div class="form-group">
			<label>Address: </label>
			<input type="text" name="address" class="form-control">
		</div>
		<div class="form-group">
			<label>Password: </label>
			<input required type="password" name="pwd" class="form-control">
		</div>
		<div class="form-group">
			<p>
				<a href="login.php">I have a account</a>
			</p>
			<button class="btn btn-success">Register</button>
		</div>
	</form>
</div>
</body>
</html>


#session.php


<?php
session_start();//Yeu cau server tạo 1 bộ nhớ session cho client
?>
<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>Session in PHP</title>
</head>
<body>
<?php
// var_dump($_SESSION);
// B1) Ghi noi dung vao session
// $_SESSION['fullname'] = 'TRAN VAN C';

// B2) Doc noi dung tu session ra
$fullname = "";
if(isset($_SESSION['fullname'])) {
	$fullname = $_SESSION['fullname'];
}
echo $fullname;

// B3) Sua noi dung session
// $_SESSION['fullname'] = 'TRAN VAN C';

// B4) Xoa noi dung khoi session
unset($_SESSION['fullname']);
?>
</body>
</html>


#show.php


<?php
session_start();

$fullname = $birthday = $email = $address = $pwd = "";

if(isset($_SESSION['fname'])) {
	$fullname = $_SESSION['fname'];
}
if(isset($_SESSION['birthday'])) {
	$birthday = $_SESSION['birthday'];
}
if(isset($_SESSION['email'])) {
	$email = $_SESSION['email'];
}
if(isset($_SESSION['address'])) {
	$address = $_SESSION['address'];
}
if(isset($_SESSION['pwd'])) {
	$pwd = $_SESSION['pwd'];
}
?>

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>Login Page</title>
	<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet">
	<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>

	<style type="text/css">
		.form-group {
			margin-bottom: 20px;
		}
	</style>
</head>
<body>
<div class="container">
	<ul>
		<li>Full Name: <?=$fullname?></li>
		<li>Birthday: <?=$birthday?></li>
		<li>Email: <?=$email?></li>
		<li>Pwd: <?=$pwd?></li>
		<li>Address: <?=$address?></li>
	</ul>
</div>
</body>
</html>


#vidu.php


<?php
session_start();

if(!empty($_POST)) {
	$txt = $_POST['txt'];
	$_SESSION['txt'] = $txt;
}

var_dump($_SESSION);
?>
<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<title>Text in PHP</title>
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet">
	<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>
<div class="container">
	<form method="post">
		<div class="form-group">
			<label>Text: </label>
			<input type="text" name="txt" class="form-control" placeholder="Enter text">
		</div>
		<div class="form-group">
			<button class="btn btn-success">Save</button>
		</div>
	</form>
</div>
</body>
</html>


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