Re: [RFC] Namespace-scoped declares

On Friday, September 23, 2016, Nikita Popov <nikita.ppv@gmail.com> wrote: > Hi internals! > > I'd like to propose the ability of specifying declare directives like > "strict_types" at the namespace level. > > The broader context of this proposal is to provide a simple and usable > mechanism that will allow developers to opt-in to stricter language > semantics on a per-library (or more specifically, per-namespace) basis, > thus alleviating backwards compatibility and library interoperability > concerns for such changes. > > https://wiki.php.net/rfc/namespace_scoped_declares > > I don't know whether this is the right solution to this problem, so next to > the specifics of this proposal, I'm also open to discussing alternative > approaches, as long such discussions can be held at a reasonably technical > level (i.e. concrete suggestions rather than vague concepts). > > Thanks, > Nikita > Aside from the issues already raised, implementing anything like this would require reworking how the engine handles namespaces. My understanding is namespaces are implemented as a set of string replace rules. The namespace itself is not a structure to php. This prevents things like class privacy, Java's notion of "protected" and so on.