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<?php use ReflectionClass; class Language { const DUTCH = 1; private static $languages_values; public static function getConstName($value) { if (!isset(self::$languages_values[$value])) { thow new \Exception('de value bestaat niet!'); } return self::$languages_values[$value]; } public static function init() { static $initialized = false; if ( ! $initialized) { $ref_class = new ReflectionClass(self::class); self::$languages_values = array_flip($ref_class->getConstants()); $initialized = true; } } } // ja, dit zet je in het zelfde bestand Language::init();