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Date: Tue, 13 Dec 2011 14:48:14 +0000 (GMT)
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To: Oleg Oshmyan <chortos@inbox.lv>
cc: PHP Developers Mailing List <internals@lists.php.net>
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Subject: Re: [PHP-DEV] Local time zone
From: derick@php.net (Derick Rethans)

On Mon, 12 Dec 2011, Oleg Oshmyan wrote:

> > This might work on some distrbutions, but not nearly on all. And 
> > definitely not on Windows. On Debian it's not a symlink for example.
> 
> It is still usable as one of the possibilities for the guessing algorithm
> to examine.
> 
> Initially I also wanted to say that /usr/share/zoneinfo can be searched
> if /etc/localinfo is not a symbolic link, but I have just run a test:

<snip>

We will not be adding code that has to scan the filesystem.

> > It's a guess, and that's the problem. Guessing makes up for odd and 
> > strange bugs if it's not 100% accurate (which it isn't). 
> 
> Which is why a pseudo-timezone called System is needed so that guesses do
> not have to be made. The extension would then convert /etc/localtime to
> its internal time zone description format or just use system-provided
> APIs as it used to do before PHP 5.1 if I understand correctly.
> 
> > That's a really bad idea, as we've discussed before on this list.

<snip>

> Perhaps I am a bad searcher; I would appreciate if you pointed me at 
> some of the past discussion.

http://marc.info/?t=119988823700001&r=1&w=2 is what it was I think.

cheers,
Derick

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