function checkPassword($login, $pass)
{
	require '../php/cfg.php';
	include '../php/cfg.php';

	$conn = new mysqli($servername, $username, $password, $dbname);

	if ($conn->connect_error) {
		die("Brak polaczenia z baza danych!");
		exit();
	}

	$query = "SELECT * FROM admin WHERE username = '$login'";
	$result = $conn->query($query)  or trigger_error($conn->error."[$sql]");

	/* numeric array */
	$row = $result->fetch_array(MYSQLI_NUM);


	$databasePassword = $row[1];



	$result->free();
	$conn->close();

	if( hash('sha256', $pass) == $databasePassword)
	{
		return true;
	}
	else
	{
		return false;
	}
}