Hi Alexander, On Tue, Feb 24, 2015 at 10:48 AM, Alexander Lisachenko < lisachenko...@gmail.com> wrote:
> Morning! > > I want to ask this question one more time before PHP7 feature freeze: can > we the engine case sensitive from PHP>=7.0? > > There is a draft for that: https://wiki.php.net/rfc/case-sensitivity > (mostly empty), so I decided to ask this question in the internals mail > list. > > Pros: more simple O(1) hash table checks for properties, functions, > methods, classes without strtolower normalization on the engine/parser > level. Consistency with unicode class names (yes, they are case sensitive, > check http://3v4l.org/ia0pc), consistency with exisiting PSR0,4 standards > (case sensitive mapping of class names to the file names) > > From my experience, all modern PHP framework don't use case-insensitive > code, so chance to break anything for them is really low. > > Cons: on the extension level things aren't so good and can be some BC > breaks (like with phpng) > > Possible ways: > > 1) Keep PHP engine case-insensitive for PHP7 > 2) Make PHP engine case-sensitive since PHP7 with possible minor BC breaks > in the extensions (this breaks can be easily fixed) > 3) Add a compile-time switch, eg. --with-case-sensitivity to the > configuration to have an ability to build PHP with sensitivity and make > this option enabled by default since next major version (PHP>=8.0). Add > deprecation notices in 7.x > > Thoughts? > I case we would designed a new language I would rise two hands. Changing, syntax in an existent widely used language is an additional pain for users. Technically it shouldn't be very difficult to remove support for case-insensitivity, and it'll even improve speed and memory consumption, but I don't think it costs the compatibility break. Thanks. Dmitry.
