Online PHP editor | output for N3fmO

<?php #[Attribute(Attribute::TARGET_PROPERTY)] class NotSerializable {} class Foo { #[NotSerializable] protected $bar = 1; #[NotSerializable] protected $baz = 2; public function __serialize(): array { $data = []; foreach ((new ReflectionObject($this))->getProperties() as $property) { if ($property->getAttributes(NotSerializable::class)) { continue; } $data[$property->getName()] = $property->getValue($this); } return $data; } } class FooChild extends Foo { protected $bar; } var_dump(serialize(new FooChild()));