TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:09 +02:00
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+.. include:: /Includes.rst.txt
+
+.. _breaking-98158-1660740286:
+
+======================================
+Breaking: #98158 - Update to Symfony 6
+======================================
+
+See :issue:`98158`
+
+Description
+===========
+
+TYPO3 Core now ships with Symfony 6.1. Previously TYPO3 v11 used Symfony Components
+in version 5.4.
+
+Impact
+======
+
+Some PHP code now might need to consider other types, especially regarding PHP
+classes which might be extended or used directly, where types for arguments are used.
+
+One example is that all CLI Commands (used in custom extensions) now need to define
+an :php:`int` as return type of the :php:`execute()` method, otherwise the CLI
+command will not be executed anymore.
+
+Affected installations
+======================
+
+TYPO3 Installations with extensions making heavy use of Symfony components directly.
+
+Migration
+=========
+
+Functionality such as the CLI Commands can already put in place for TYPO3 versions prior to
+TYPO3 v12. It is recommended to use tools such as Rector to detect possible problems when
+having extensions interacting with Symfony Components directly.
+
+.. index:: PHP-API, NotScanned, ext:core