Online PHP editor | output for RqDHu

<?php /** * @return array<string, mixed> */ function objectToArray(object $object): array { return @(fn (): array => get_object_vars($this))->call($object) ?? get_object_vars($object); } final class A { private $a = 'incapsulated string'; } // user-defined class instance var_dump(objectToArray(new A())); // internal stdClass instance $object = new stdClass(); $object->a = 1; var_dump(objectToArray($object)); // internal DateTimeImmutable class instance var_dump(objectToArray(new DateTimeImmutable()));