--TEST-- Lazy objects: property op error --FILE-- a = 2; } } function test(string $name, object $obj) { printf("# %s:\n", $name); var_dump($obj); try { var_dump($obj->a++); } catch (Error $e) { printf("%s: %s\n", $e::class, $e->getMessage()); } var_dump($obj); } $reflector = new ReflectionClass(C::class); $obj = $reflector->newLazyGhost(function ($obj) { throw new Error("initializer"); }); test('Ghost', $obj); $obj = $reflector->newLazyProxy(function ($obj) { throw new Error("initializer"); }); test('Proxy', $obj); --EXPECTF-- # Ghost: lazy ghost object(C)#%d (0) { ["a"]=> uninitialized(int) } Error: initializer lazy ghost object(C)#%d (0) { ["a"]=> uninitialized(int) } # Proxy: lazy proxy object(C)#%d (0) { ["a"]=> uninitialized(int) } Error: initializer lazy proxy object(C)#%d (0) { ["a"]=> uninitialized(int) }