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[Translation] Mention that you need to install the PHP extension #21286

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Aug 14, 2025
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[Translation] Mention that you need to install the PHP extension #21286

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7 changes: 7 additions & 0 deletions translation.rst
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Expand Up @@ -52,6 +52,12 @@ First, run this command to install the translator before using it:

$ composer require symfony/translation

Symfony includes several internationalization polyfills (``symfony/polyfill-intl-icu``,
``symfony/polyfill-intl-messageformatter``, etc.) that allow you to use translation
features even without the `PHP intl extension`_. However, these polyfills only
support English translations, so you must install the PHP ``intl`` extension
when translating into other languages.

.. _translation-configuration:

Configuration
Expand Down Expand Up @@ -1595,6 +1601,7 @@ Learn more
.. _`ICU MessageFormat`: https://unicode-org.github.io/icu/userguide/format_parse/messages/
.. _`ISO 3166-1 alpha-2`: https://en.wikipedia.org/wiki/ISO_3166-1#Current_codes
.. _`ISO 639-1`: https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes
.. _`PHP intl extension`: https://php.net/book.intl
.. _`Translatable Extension`: https://github.com/doctrine-extensions/DoctrineExtensions/blob/main/doc/translatable.md
.. _`Translatable Behavior`: https://github.com/KnpLabs/DoctrineBehaviors
.. _`Custom Language Name setting`: https://docs.lokalise.com/en/articles/1400492-uploading-files#custom-language-codes
Expand Down