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date formatter fall back to PHP impl. to solve Y2K38 issue

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formatting date and time values for years >=2038 or <=1901 is now possible also with intl extension is
installed. 32bit systems will fall back to the PHP implementation because intl uses a 32bit UNIX timestamp internally.
On a 64bit system the intl formatter is used in all cases if installed.

fixes #5577
This commit is contained in:
Carsten Brandt
2015-01-10 18:24:17 +01:00
parent ea881351b2
commit 9415c7921d
4 changed files with 15 additions and 7 deletions
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4
docs/guide/output-formatter.md
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@ -51,6 +51,10 @@ echo Yii::$app->formatter->asDate('2014-01-01'); // output: 1 января 2014
> [PHP intl extension](http://php.net/manual/en/book.intl.php) is installed or not. So to ensure your website works with the same output
> in all environments it is recommended to install the PHP intl extension in all environments and verify that the version of the ICU library
> is the same. See also: [Setting up your PHP environment for internationalization](tutorial-i18n.md#setup-environment).
>
> Note also that even if the intl extension is installed, formatting date and time values for years >=2038 or <=1901
> on 32bit systems will fall back to the PHP implementation, which does not provide localized month and day names,
> because intl uses a 32bit UNIX timestamp internally. On a 64bit system the intl formatter is used in all cases if installed.
Configuring the formatter <a name="configuring-format"></a>