TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:09 +02:00
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+.. include:: /Includes.rst.txt
+
+.. _breaking-87583:
+
+===================================================================
+Breaking: #87583 - Remove obsolete APC Cache Backend implementation
+===================================================================
+
+See :issue:`87583`
+
+Description
+===========
+
+The Caching framework backend implementation :php:`TYPO3\CMS\Core\Cache\Backend\ApcBackend` has
+been removed. The APCu PHP extension has superseded in PHP 7.x.
+
+Impact
+======
+
+The PHP APC extension works until PHP 5.x. APCu can be used as "drop-in" replacement since TYPO3 8
+LTS which supports PHP 7.0+.
+
+Affected Installations
+======================
+
+Any installation which has been updated, and any legacy APC cache backend is configured (see
+:file:`LocalConfiguration.php`).
+
+Migration
+=========
+
+Use APCu implementation, which is implemented via :php:`TYPO3\CMS\Core\Cache\Backend\ApcuBackend`
+instead of :php:`TYPO3\CMS\Core\Cache\Backend\ApcBackend` in your caching framework configuration.
+
+Example before:
+
+:php:`$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['rootline']['backend'] = \TYPO3\CMS\Core\Cache\Backend\ApcBackend::class;`
+
+Example after:
+
+:php:`$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['rootline']['backend'] = \TYPO3\CMS\Core\Cache\Backend\ApcuBackend::class;`
+
+
+.. index:: Backend, PHP-API, ext:core, NotScanned