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Date: Tue, 28 Jan 2014 09:45:53 +0900
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To: Stas Malyshev <smalyshev@sugarcrm.com>
Cc: Chris Wright <daverandom@php.net>, Andrea Faulds <ajf@ajf.me>, 
	PHP internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=001a113495b2dfcb1204f0fd2701
Subject: Re: [PHP-DEV] PHP and case-sensitivity inconsistency in PHP 6
From: yohgaki@ohgaki.net (Yasuo Ohgaki)

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Hi all,

On Mon, Jan 27, 2014 at 8:36 AM, Stas Malyshev <smalyshev@sugarcrm.com>wrote:

> > So essentially, I would like to see case sensitivity at call time
> > (called name must match declaration), but case insensitivity at
> > declaration time (when checking whether a symbol has already been
> > declared):
>
> What would function_exists('Foo') return when foo() is defined?
>
> If false, then this code:
>
> if (!function_exists('Foo')) {
>   function Foo() { ... }
> }
>
> would not work. If true, then this code:
>
> if(function_exists('Foo')) {
>   Foo();
> }
>
> would not work. Both are working fine now and there's no real reason why
> shouldn't they keep working.
>
> Additionally, making the engine case-sensitive would simplify some areas
> of function/class handling. But making it inconsistently partially
> case-sensitive would instead complicate it, as we now would have to make
> additional checks against original name before calling.
>
> My opinion is if we go case-sensitive, it must be full case sensitivity,
> no exceptions.


+1 for full case sensitivity, no exceptions.

We may provide compatibility check and conversion scripts
using tokenizer module.

Regards,

--
Yasuo Ohgaki
yohgaki@ohgaki.net

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