TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:09 +02:00
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+.. include:: /Includes.rst.txt
+
+.. _breaking-96889:
+
+================================================
+Breaking: #96889 - Require PHP mbstring and intl
+================================================
+
+See :issue:`96889`
+
+Description
+===========
+
+The two PHP extensions :php:`mbstring` and :php:`intl` are required to
+be loaded when running TYPO3 v12.
+
+:php:`mbstring` is a common extension that is either compiled directly
+into PHP or available as standard package in all distributions and
+operating systems. Similar for :php:`intl`. While there are symfony
+packages that mimic these extensions partially if not available, these
+"polyfill" packages are slower, and most importantly, they implement only
+parts of the native extensions. To further improve TYPO3 character set
+and internationalization handling, the system needs the full functionality.
+
+Impact
+======
+
+System environments not providing these PHP extensions may fail.
+
+Affected Installations
+======================
+
+The install tool "Environment Status" and the reports module notify
+about missing PHP extensions, and it is shown during the installation process.
+
+Migration
+=========
+
+Provide the extensions in the PHP.
+
+A debian / ubuntu based Linux host typically install such packages with
+a command similar to this:
+
+..  code-block:: bash
+
+    sudo apt install php8.1-mbstring php8.1-intl
+
+.. index:: PHP-API, NotScanned, ext:core