Online PHP editor | refs for DFuO8

<?php /** * @return non-empty-list<non-empty-string> */ function valueTypes(mixed $value): array { if (is_object($value)) { return [ $value::class, ...array_values(class_parents($value)), ...array_values(class_implements($value)), ]; } return [get_debug_type($value)]; } interface I1 {} interface I2 {} abstract class A implements I1 {} final class B extends A implements I2 {} var_dump(valueTypes(1)); var_dump(valueTypes('string')); var_dump(valueTypes(new B()));