Bug #78954 [Nab]: get_object_vars not returning typed empty properties

Edit report at https://bugs.php.net/bug.php?id=78954&edit=1 ID: 78954 User updated by: thomas dot wiringa at gmail dot com Reported by: thomas dot wiringa at gmail dot com Summary: get_object_vars not returning typed empty properties Status: Not a bug Type: Bug Package: Scripting Engine problem Operating System: Arch Linux / Linux 5.4.2 PHP Version: 7.4.0 Block user comment: N Private report: N New Comment: I understand that those properties have never been initialized, however, in previous PHP versions, those properties would still be visible in the array returned by get_object_vars. Is this an undocumented change then? Because the documentation for get_object_vars still suggests that it should be returning NULL for unassigned properties: "If a property has not been assigned a value, it will be returned with a NULL value." I also noticed that the behaviour seems inconsistent with get_class_vars now, as that function still returns the expected array, with the difference being that get_class_vars returns the initial values instead of the current values. An example: https://3v4l.org/fFpe4 Previous Comments: ------------------------------------------------------------------------ [2019-12-12 13:52:42] nikic@php.net get_object_vars() does not return null, because those values are not null. These properties have not been initialized -- essentially they do not exist. If you wish to get all the properties that were *declared* in the class, regardless of whether they have been initialized or unset, you can use ReflectionObject. ------------------------------------------------------------------------ [2019-12-12 13:33:21] thomas dot wiringa at gmail dot com Description: ------------ When using typed properties such as public string $foo; or public ?string $foo; get_object_vars does not return [ 'foo' => NULL ] if this property was never set. However, pre-7.4 it would return the property in the array if it was defined as public $foo; but never set/changed. Test script: --------------- https://3v4l.org/eg6o0 Expected result: ---------------- string(20) "bar exists in $vars" string(28) "foobar exists in $vars" string(20) "foo exists in $vars" Actual result: -------------- string(19) "bar exists in $vars" Warning: assert(): assert(array_key_exists('foobar', $vars)) failed in /in/eg6o0 on line 12 string(30) "foobar does not exist in $vars" Warning: assert(): assert(array_key_exists('foo', $vars)) failed in /in/eg6o0 on line 13 string(27) "foo does not exist in $vars" ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=78954&edit=1