Antony Dovgal wrote:
6 reasons why we must to get rid of The Switch ASAP
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1) it gives users false sense of "compatibility" when no compatibility is even 
planned;

2) it's supposed to mean compatibility, but can be changed only in php.ini, which means users would still have to maintain 2 versions of their software: one for On and second for Off.

+1, I'm not looking forward to implementing support for both values in MediaWiki.

As for PHP 6 generally: there needs to be a solid migration path, such as forwards-compatible syntax introduced to PHP 5. MediaWiki has extensive support for unicode in PHP 5, including a pure PHP implementation of NFC, cross-script and confusable character checks, extensive parsing of UTF-8 text using regexes both with and without /u, and megabytes of localisations in the form of PHP source files with UTF-8 string literals.

Porting all this to a UTF-16-based environment would be a hassle, and we don't gain anything from it in terms of features for our users. I'd hate to end up in an adversarial situation, where developers working in PHP are forced to boycott or fork PHP 6. That's why a simple migration path is important.

-- Tim Starling

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