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[Intl] Document support for ISO 3166-1 numeric codes #18610

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Aug 2, 2023
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[Intl] Document support for ISO 3166-1 numeric codes #18610

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28 changes: 28 additions & 0 deletions components/intl.rst
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Expand Up @@ -179,6 +179,33 @@ You may convert codes between two-letter alpha2 and three-letter alpha3 codes::

$alpha2Code = Countries::getAlpha2Code($alpha3Code);

Numeric Country Codes
~~~~~~~~~~~~~~~~~~~~~

The :class:`Symfony\\Component\\Intl\\Countries` class also provides access to the
numeric country codes according to the `ISO 3166-1 numeric`_ list::

use Symfony\Component\Intl\Countries;

\Locale::setDefault('en');

$numericCodes = Countries::getNumericCodes();
// ('alpha2Code' => 'numericCode')
// => ['AA' => '958', 'AD' => '020', ...]

$numericCode = Countries::getNumericCode('FR');
// => '250'

$alpha2 = Countries::getAlpha2FromNumeric('250');
// => 'FR'

$exists = Countries::numericCodeExists('250');
// => true

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Since this is a new feature, we must add a note like the following:

.. versionadded:: 6.4

    The support for numeric country codes was introduced in Symfony 6.4.

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Done

.. versionadded:: 6.4

The support for numeric country codes was introduced in Symfony 6.4.

Locales
~~~~~~~

Expand Down Expand Up @@ -435,6 +462,7 @@ Learn more
.. _`Unicode ISO 15924 Registry`: https://www.unicode.org/iso15924/iso15924-codes.html
.. _`ISO 3166-1 alpha-2`: https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2
.. _`ISO 3166-1 alpha-3`: https://en.wikipedia.org/wiki/ISO_3166-1_alpha-3
.. _`ISO 3166-1 numeric`: https://en.wikipedia.org/wiki/ISO_3166-1_numeric
.. _`UTC/GMT time offsets`: https://en.wikipedia.org/wiki/List_of_UTC_time_offsets
.. _`daylight saving time (DST)`: https://en.wikipedia.org/wiki/Daylight_saving_time
.. _`ISO 639-1 alpha-2`: https://en.wikipedia.org/wiki/ISO_639-1
Expand Down