Panel logowania

<!DOCTYPE html>
<?php
//include config
require_once('config.php');

//check if already logged in move to home page
if( $user->is_logged_in() ){ header('Location: lista_tematow.php'); }

//process login form if submitted
if(isset($_POST['submit'])){

	$username = $_POST['username'];
	$password = $_POST['password'];

	if($user->login($username,$password)){
		$_SESSION['username'] = $username;
		header('Location: lista_tematow.php');
		exit;

	} else {
		$error[] = 'Wrong username or password or your account has not been activated.';
	}

}//end if submit

//define page title
//$title = 'Login';

//include header template
//require('layout/header.php');
?>
<html>
<head>
<link rel="stylesheet" type="text/css" href="style.css">
<title>Jokasta</title>
<meta charset="UTF-8">
<meta name="description" content="Jokasta">
<meta name="keywords" content="Jokasta, Politechnika, Opolska, Opole">
<meta name="author" content="Katarzyna Cybulska, Daniel Baranowski">
<script src="http://code.jquery.com/jquery-1.12.4.js"></script>
</head>
<body>
<div id="login">
	<h1 style="font-size: 80px; margin-top: 30vh;"><a href="index.php">Jokasta</a></h1>
	<!--<form class="form" action="logowanie.php" method="post">-->
	<form class="form" role="form" method="post" action="" autocomplete="off">
		<?php
		//check for any errors
		if(isset($error)){
			foreach($error as $error){
				echo '<p class="bg-danger">'.$error.'</p>';
			}
		}

		if(isset($_GET['action'])){

			//check the action
			switch ($_GET['action']) {
				case 'active':
					echo "<h2 class='bg-success'>Your account is now active you may now log in.</h2>";
					break;
				case 'reset':
					echo "<h2 class='bg-success'>Please check your inbox for a reset link.</h2>";
					break;
				case 'resetAccount':
					echo "<h2 class='bg-success'>Password changed, you may now login.</h2>";
					break;
			}

		}
		?>
		<input type="text" name="username" id="username" placeholder="Login" value="<?php if(isset($error)){ echo $_POST['username']; } ?>"><br>
		<input type="password" name="password" id="password" placeholder="Hasło"><br>
		<input type="submit" name="submit" value="Zaloguj">
	</form>
</div>
</body>
</html>