$GLOBALS

TYPO3 configuration array. Please refer to the chapter TYPO3_CONF_VARS where each option is described in detail.

Most values in this array can be accessed through the tool Admin Tools > Settings > Configure Installation-Wide Options.

See TCA Reference

Global registration of services.

The backend main/sub-module structure. See section elsewhere plus source code of class \TYPO3\CMS\Backend\Module\ModuleLoader which also includes some examples.

Used to store information about modules from extensions that should be included in "function menus" of real modules. See the Extension API for details.

This variable may be set in a script prior to the bootstrap process so it is optional.

Contains information related to BE skinning.

Contains an instantiation of \TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController .

Provides some public properties and methods which can be used by extensions. The public properties can also be used in TypoScript via TSFE.

More information is available in TSFE.

Defines the form in the User Settings.

$GLOBALS['PAGES_TYPES'] defines the various types of pages (doktype) the system can handle and what restrictions may apply to them.

Here you can define which tables are allowed on a certain page types (doktype).

The default configuration applies if the page type is not defined otherwise.

Backend user object. See Backend user object.

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

Is set to $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)

The LanguageService can be used to fetch translations.

More information about retrieving the LanguageService is available in Localization in PHP.