public static function DatabaseVersionIsValid() { $databaseVersion = Session::GetDatabaseVersion(); if ($databaseVersion == null || version_compare($databaseVersion, DOMA_VERSION) < 0) { $databaseVersion = DataAccess::GetSetting("DATABASE_VERSION", "0.0"); Session::SetDatabaseVersion($databaseVersion); } return version_compare($databaseVersion, DOMA_VERSION) >= 0; }