if(isset($_POST['username']) && isset($_POST['password'])){
	$host = 'localhost';
	$user = 'root';
	$pass = '';
	$base = 'anketa';

	$conn = new mysqli($host,$user,$pass,$base);

	if ($conn->connect_error) {
		die("Connection failed: " . $conn->connect_error);
	}

	$query = "SELECT * FROM studentski_nalog";
	$result = $conn->query($query);

	while($row = $result->fetch_row()){
		if($row[1] == $_POST['username'] && $row[2] == $_POST['password']){
			$_SESSION['user'] = $_POST['username'];
			$loggedin = true;
			echo 'Logged in';
			break;
		}

	}

	if(isset($loggedin)){
		header("Location: index.php");
	}
	$error_msg = "Uneti podaci nisu validni";
	echo $error_msg;
	$conn->close();

}