gagal login

$result = $mysqli->query("SELECT * FROM user");

	if ($result) {
		$get = $result->fetch_object();
		if (trim($username)==$get->username && trim($password)==$get->password) {
			if ($get->status == 0) {
				$mysqli->query("UPDATE user SET status = '1' WHERE username = '$username' AND password = '$password' ");
				$_SESSION['id'] = 		$get->id;
				$_SESSION['username'] = $get->username;
				$_SESSION['level'] = 	$get->level;
				$_SESSION['level2'] = 	$get->level2;
				header("location:index.php");
			} else {
				echo '<script>window.alert("anda telah login");window.location=("login.php");</script>';
			}
		} else {
			$_SESSION['pesan'] = "Your Username or Password was incorrect";
			header("location:login.php");
		}
	}