Which is precisely the BC break: such a library would now throw an exception "unsupported class X" when `__toString` is implemented. Also, such a library would break silently when this feature is implemented.
Much like the already very broken `__debugInfo()`, this automatic type-cast is a giga-Joule footgun. On 15 Mar 2017 11:36 p.m., "Ryan Pallas" <derokor...@gmail.com> wrote: > > > On Wed, Mar 15, 2017 at 4:33 PM, Marco Pivetta <ocram...@gmail.com> wrote: > >> It's the only way to distinguish between set and unset properties. Also >> the >> only way to get all properties from an instance of an inheritance tree. >> Also, it's covered by tests that were explicitly added to prevent >> regressions on this. >> >> Same as all similar discussions before this one: need an alternative way >> to >> do things before proposing a BC break. >> >> > As mentioned in previous mails - the intent isn't to change existing > behaviour, but to provide a way for a class to override the default > behaviour. As long as those classes you are casting to array don't > implement __toArray they will behave exactly as they always have. The only > concern then, is that you might be relying on a library to not implement > that function on a class you are casting. > > >> On 15 Mar 2017 11:27 p.m., "Kalle Sommer Nielsen" <ka...@php.net> wrote: >> >> > Hi >> > >> > 2017-03-15 21:41 GMT+01:00 Marco Pivetta <ocram...@gmail.com>: >> > > This is a BC break due to the fact that the `(array)` cast is used to >> > > extract property information from private properties in library code. >> > >> > Yep, but then again that is more of an >> > undocumented-not-really-supported case afair, if anything then >> > Reflection should have the APIs to officially allow that, although I >> > am still skeptic of this. >> > >> > >> > -- >> > regards, >> > >> > Kalle Sommer Nielsen >> > ka...@php.net >> > >> > >
