note 125836 added to reflectionclass.newinstancewithoutconstructor

Such a function should definitely end up in productive code as rarely as possible. There are always exceptions though :) We have UseCase classes in our library extending an abstract UseCase having a constructor that does some setting up and it will even throw exceptions if some specific conditions are not yet met. Within that UseCase the permissions are also defined. Simplified example: <?php abstract class UseCase implements IUseCase { /** @var string[] */ protected array $requiredPermissions = []; final public function __construct(IPresenter $out) { // several startup checks, including authorization } } ?> We already have a better solution, but it will take some time to refactor that and we will have to live with this for at least a few weeks. Now I've had the idea to check the permissions in the application's incoming request way before the individual UseCase will be initialized. So after seeing this method here I just introduced this little helper into our abstract UseCase: <?php public static function getRequiredPermissions(): array { $class = new ReflectionClass(get_called_class()); return $class->newInstanceWithoutConstructor()->requiredPermissions; } ?> Now I'm able to check the permissions in my request without really touching anything in the library: <?php public function authorize(): bool { if (!$this->user->hasPermissions(CreatePost::getRequiredPermissions())) { return false; } return true; } ?> This does also have the benefit of adding one more reason to switch to our new UseCase classes ASAP :) ---- Server IP: 45.112.84.4 Probable Submitter: 45.112.85.245 (proxied: 95.223.183.77) ---- Manual Page -- http://php.net/manual/en/reflectionclass.newinstancewithoutconstructor.php Edit -- https://master.php.net/note/edit/125836 Del: integrated -- https://master.php.net/note/delete/125836/integrated Del: useless -- https://master.php.net/note/delete/125836/useless Del: bad code -- https://master.php.net/note/delete/125836/bad+code Del: spam -- https://master.php.net/note/delete/125836/spam Del: non-english -- https://master.php.net/note/delete/125836/non-english Del: in docs -- https://master.php.net/note/delete/125836/in+docs Del: other reasons-- https://master.php.net/note/delete/125836 Reject -- https://master.php.net/note/reject/125836 Search -- https://master.php.net/manage/user-notes.php