Hi Mark, https://wiki.php.net/rfc/undefined_property_error_promotion >
[note: the RFC Date has a +1 on the year] I'm in favor for "fixed" classes (with all properties declared and no `__get()` magic method), but somewhat mixed for `stdClass`: as you said, it can come from a `json_decode()` by default or an `(object)$array` cast, and is kind of "interchangeable" with `array` (which can come from a `json_decode()` with `associative: true` / `flags: JSON_OBJECT_AS_ARRAY` or an `(array)$object` cast); as such, I wonder if it wouldn't make more sense to rather handle undefined properties *on stdClass* together with undefined *array keys*? (the reasoning could even be extended to classes annotated with the `#[AllowDynamicProperties]` attribute...) Regards, -- Guilliam Xavier
