..  include:: /Includes.rst.txt
..  index::
    ! $GLOBALS
    Global variables
    see: Global variables; $GLOBALS
..  _globals-variables:

========
$GLOBALS
========

..  seealso::
    Most global variables described here can be viewed in module
    :guilabel:`System > Configuration`: :ref:`globals-exploring`

..  confval:: TYPO3_CONF_VARS
    :name: globals-typo3-conf-vars
    :Path: $GLOBALS
    :type: array
    :Defined: :file:`typo3/sysext/core/Configuration/DefaultConfiguration.php`
    :Frontend: yes

    TYPO3 configuration array. Please refer to the chapter :ref:`typo3ConfVars`
    where each option is described in detail.

    Most values in this array can be accessed through the tool
    :guilabel:`System > Settings > Configure Installation-Wide Options`.



TCA
---

..  confval:: TCA
    :name: globals-tca
    :Path: $GLOBALS
    :type: array
    :Defined: :php:`\TYPO3\CMS\Core\Core\Bootstrap::loadExtensionTables()`
    :Frontend: Yes, partly

    See :ref:`TCA Reference <t3tca:start>`



T3_SERVICES
-----------

..  confval:: T3_SERVICES
    :name: globals-t3-services
    :Path: $GLOBALS
    :type: array
    :Defined: :php:`\TYPO3\CMS\Core\Core\SystemEnvironmentBuilder::initializeGlobalVariables()`
    :Frontend: Yes

    Global registration of :ref:`services <services-introduction>`.


TYPO3_USER_SETTINGS
-------------------

..  confval:: TYPO3_USER_SETTINGS
    :name: globals-typo3-user-settings
    :Path: $GLOBALS
    :type: array
    :Defined: :file:`typo3/sysext/setup/ext_tables.php`

    ..  deprecated:: 14.2

        See: `Migration from addFieldsToUserSettings to addUserSetting <https://docs.typo3.org/permalink/t3coreapi:user-settings-extending-migration>`_


BE_USER
-------

..  confval:: BE_USER
    :name: globals-be-users
    :Path: $GLOBALS
    :type: :php:`\TYPO3\CMS\Core\Authentication\BackendUserAuthentication`
    :Defined: :php:`\TYPO3\CMS\Core\Core\Bootstrap::initializeBackendUser()`
    :Frontend: (depends)

    Backend user object. See :ref:`be-user`.



EXEC_TIME
---------

..  confval:: EXEC_TIME
    :name: globals-exec-time
    :Path: $GLOBALS
    :type: int
    :Defined: :php:`\TYPO3\CMS\Core\Core\SystemEnvironmentBuilder::initializeGlobalTimeTrackingVariables()`
    :Frontend: yes

    Is set to :php:`time()` so that the rest of the script has a common value
    for the script execution time.

    ..  note::

        Should not be used anymore, rather use the
        :ref:`DateTime Aspect <context_api_aspects_datetime>`.



SIM_EXEC_TIME
-------------

..  confval:: SIM_EXEC_TIME
    :name: globals-sim-exec-time
    :Path: $GLOBALS
    :type: int
    :Defined: :php:`\TYPO3\CMS\Core\Core\SystemEnvironmentBuilder::initializeGlobalTimeTrackingVariables()`
    :Frontend: yes

    Is set to :php:`$GLOBALS['EXEC_TIME']` but can be altered later in the script if we
    want to simulate another execution-time when selecting from e.g. a
    database (used in the frontend for preview of future and past dates)

    ..  note::

        Should not be used anymore, rather use the
        :ref:`DateTime Aspect <context_api_aspects_datetime>`.


LANG
----

..  confval:: LANG
    :name: globals-lang
    :Path: $GLOBALS
    :type: :php:`\TYPO3\CMS\Core\Localization\TranslatorInterface`
    :Defined: is initialized via :php-short:`\TYPO3\CMS\Core\Localization\LanguageServiceFactory`
    :Frontend: no

    ..  attention::

        It is discouraged to use this variable directly. The
        :php-short:`\TYPO3\CMS\Core\Localization\LanguageServiceFactory`
        should be used instead to retrieve the translator.

    The :php-short:`\TYPO3\CMS\Core\Localization\TranslatorInterface` can be used to fetch
    translations.

    More information about retrieving the
    :php-short:`\TYPO3\CMS\Core\Localization\TranslatorInterface` is available in
    :ref:`extension-localization-php`.