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symfony/src/Symfony/Component/Intl/README.md
Jakub Zalas 5d3d1b25e0
[Intl][Form] Update tests, TimeZoneTransformer, and DateTimeToLocalizedStringTransformer for the GMT and UTC split in ICU
The [GMT timezone has been split from the UTC](http://site.icu-project.org/download/59) timezone [in CLDR](http://cldr.unicode.org/index/downloads/cldr-31) (which ICU is based on).

For example, the code blow:
* before ICU 59.1 would return "GMT" in all cases
* with ICU 59.1 it returns "UTC" for the first three ('z', 'zz', 'zzz')
  and "Coordinated Universal Time" for the last two ('zzzz', 'zzzzz').

```php
foreach (['z', 'zz', 'zzz', 'zzzz', 'zzzzz'] as $pattern) {
    $formatter = new \IntlDateFormatter('en', IntlDateFormatter::MEDIUM, IntlDateFormatter::SHORT, new \DateTimeZone('UTC'), IntlDateFormatter::GREGORIAN, $pattern);
    var_dump($formatter->format(new \DateTime('@0')));
}
```

Similarly Form's `DateTimeToLocalizedStringTransformer` is also affected:

```php
$transformer = new DateTimeToLocalizedStringTransformer('UTC', 'UTC', null, \IntlDateFormatter::FULL);
var_dump($transformer->transform(new \DateTime('2010-02-03 04:05:06 UTC')));
// ICU 58.2: '03.02.2010, 04:05:06 GMT'
// ICU 59.1: '03.02.2010, 04:05:06 Koordinierte Weltzeit'
```

Refer to added and modified test cases for more changes. I split this PR in two commits for easier review. First commit updates ICU data (generated files), the second updates code and test cases to be compatible with updated data.
2017-05-15 15:46:23 +01:00

845 B

Intl Component

A PHP replacement layer for the C intl extension that also provides access to the localization data of the ICU library.

The replacement layer is limited to the locale "en". If you want to use other locales, you should [install the intl PHP extension] 0 instead.

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