Hi,
The most important point, IMO, is that it will be extremely complex to provide a ‘deprecated’ transition step. I won’t have time to work on it during the next month (will be in Africa starting next Saturday). So feel free to take over the RFC and propose something for the future. Regards François De : yohg...@gmail.com [mailto:yohg...@gmail.com] De la part de Yasuo Ohgaki Envoyé : mercredi 25 février 2015 03:07 À : francois Cc : Alain Williams; internals@lists.php.net Objet : Re: [PHP-DEV] [Discussion] Last chance for case-sensitive engine Hi Francois, On Wed, Feb 25, 2015 at 8:45 AM, François Laupretre <franc...@php.net> wrote: > > I stopped for several reasons : > > 1. The reactions were mostly negative, with a majority of 'breaks much, > brings nothing' opinions, > > 2. Crawling through the code, I discovered that code to handle case > insensitivity was spread all around PHP. Example: I thought that function > and method names could be made case-sensitive by modifying a limited number > of lines of code. Actually, it seems it is handled in a more or less > redundant way in a lot of locations. So, I quickly realized that > implementation would be extremely complex. > > 3. A lot of PHP code is, knowingly or not, using PHP case insensitivity. > > 4. A patch to make PHP case sensitive would be very complex, and providing a > two-mode mechanism still much more. It would require in many cases to > provide another case-sensitive test after each case-insensitive one and > raise an error if both don't match. We must do that because case-insensitive > comparisons are done using a case-sensitive comparison of two strings > previously converted to lowercase. It would also require to store every > class/function/method names twice, as they are currently stored in lowercase > form. As lowercase names are transmitted as strings around the code, it is > very complex to keep the link with the original value. So, to summarize, I > now consider that providing a compatibility 'notice-only' mode is > practically impossible. > > So, while it seemed attractive at first, I stopped working on it. Sounds reasonable. Zend does comparison/conversion various places indeed. "Propose & announce it now, then implement it PHP8" may work. We may get a little simpler Engine for PHP8. Regards, -- Yasuo Ohgaki yohg...@ohgaki.net
