private function userExists($username) {
		$this->username = $username;
		if ($stmt = $pdo->prepare("SELECT id FROM brugere WHERE username = :username")) {
			$stmt->bindParam(':username', $this->username);
			if ($stmt->execute()) {
				if ($stmt->rowCount() > 0) {
					return true;
				} else {
					return false;
				}
			} else {
				return true;
			}
		} else {
			return true;
		}
	}