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login.php
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login.php
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<?php
require('functions.php');
$error = null;
// Checks authentication
if (isLogged()) {
redirect();
}
// Authenticate user credentials on form submit
if ($_POST) {
$username = $_POST['username'];
$password = $_POST['password'];
$authenticated = authenticate($username, $password);
if ($authenticated) {
login();
redirect();
} else {
$error = 'Invalid credentials';
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Hello HTML - Login</title>
<link rel="stylesheet" href="styles.css" />
</head>
<body>
<header class="text-center">
<h1>Hello HTML</h1>
</header>
<main>
<form class="form-center" method="POST">
<label>Username</label>
<input name="username" />
<label>Password</label>
<input name="password" type="password" />
<button>Submit</button>
<p><?= $error ?></p>
</form>
</main>
</body>
</html>