.. include:: /Includes.rst.txt .. _extension-declaration: Declaration file ^^^^^^^^^^^^^^^^ The `ext_emconf.php` is the single most important file in an extension. Without it, the Extension Manager (EM) will not detect the extension, much less be able to install it. This file contains a declaration of what the extension is or does for the EM. The only thing included is an associative array, :code:`$EM_CONF[extension key]`. The keys are described in the table below. When extensions are imported from the online repository this file is written anew! So don't put any custom stuff in there - only change values in the :code:`$EM_CONF` array if needed. .. t3-field-list-table:: :header-rows: 1 - :Key,20: Key :Data type,20: Data type :Description,60: Description - :Key: title :Data type: string, required :Description: The name of the extension in English. - :Key: description :Data type: string, required :Description: Short and precise description in English of what the extension does and for whom it might be useful. - :Key: version :Data type: string :Description: Version of the extension. Automatically managed by EM / TER. Format is [int].[int].[int] - :Key: category :Data type: string :Description: Which category the extension belongs to: - **be** Backend (Generally backend-oriented, but not a module) - **module** Backend modules (When something is a module or connects with one) - **fe** Frontend (Generally frontend oriented, but not a "true" plugin) - **plugin** Frontend plugins (Plugins inserted as a "Insert Plugin" content element) - **misc** Miscellaneous stuff (Where not easily placed elsewhere) - **services** Contains TYPO3 services - **templates** Contains website templates - **example** Example extension (Which serves as examples etc.) - **doc** Documentation (e.g. tutorials, FAQ's etc.) - **distribution** Distribution, an extension kickstarting a full site - :Key: constraints :Data type: array :Description: List of requirements, suggestions or conflicts with other extensions or TYPO3 or PHP version. Here's how a typical setup might look:: 'constraints' => array( 'depends' => array( 'typo3' => '4.5.0-6.1.99', 'php' => '5.3.0-5.5.99' ), 'conflicts' => array( 'dam' => '' ), 'suggests' => array( 'tt_news' => '2.5.0-0.0.0' ) ) depends List of extensions that this extension depends on. Extensions defined here will be loaded *before* the current extension. conflicts List of extensions which will not work with this extension. suggests List of suggestions of extensions that work together or enhance this extension. Extensions defined here will be loaded *before* the current extension. Dependencies take precedence over suggestions. **Note:** If a "suggested" extension depends on the current extension (directly or indirectly), the suggestion is not taken into account for loading order calculation. Read more at :forge:`57825`. The above example indicated that the extension depends on a version of TYPO3 between 4.5 and 6.1 (as only bug and security fixes are integrated into TYPO3 when the last digit of the version changes, it is safe to assume it will be compatible with any upcoming version of the corresponding branch, thus ``.99``). Also the extension has been tested and is known to work properly with PHP 5.3, 5.4 and 5.5. It will conflict with the DAM (any version) and it is suggested that it might be worth installing "tt\_news" (version at least 2.5.0). - :Key: state :Data type: string :Description: Which state is the extension in - **alpha** Alpha state is used for very initial work, basically the state is has during the very process of creating its foundation. - **beta** Under current development. Beta extensions are functional but not complete in functionality. Most likely beta-extensions will not be reviewed. - **stable** Stable extensions are complete, mature and ready for production environment. You will be approached for a review. Authors of stable extensions carry a responsibility to be maintain and improve them. - **experimental** Experimental state is useful for anything experimental - of course. Nobody knows if this is going anywhere yet... Maybe still just an idea. - **test** Test extension, demonstrates concepts etc. - **obsolete** The extension is obsolete or deprecated. This can be due to other extensions solving the same problem but in a better way or if the extension is not being maintained anymore. - **excludeFromUpdates** This state makes it impossible to update the extension through the extension manager (neither by the Update mechanism, nor by uploading a newer version to the installation). This is very useful if you made local changes to an extension for a specific installation and don't want any admin to overwrite them. *New since TYPO3 4.3.* - :Key: uploadfolder :Data type: boolean :Description: If set, then the folder named "uploads/tx\_[extKey-with-no- underscore]" should be present! - :Key: createDirs :Data type: list of strings :Description: Comma list of directories to create upon extension installation. - :Key: clearCacheOnLoad :Data type: boolean :Description: If set, the EM will request the cache to be cleared when this extension is loaded. - :Key: author :Data type: string :Description: Author name - :Key: author\_email :Data type: email address :Description: Author email address - :Key: author\_company :Data type: string :Description: Author company - :Key: autoload :Data type: array :Description: To get better class loading support for websites in **non-composer mode+** the following information can be provided. **Extensions having one folder with classes or single files** Considering you have an Extbase extension (or an extension where all classes and interfaces reside in a Classes folder) or single classes you can simply add the following to your :file:`ext_emconf.php` file:: 'autoload' => [ 'classmap' => [ 'Classes', 'a-class.php', ] ], **Extensions using namespaces** If the extension has namespaced classes following the PSR-4 standard, then you can add the following to your :file:`ext_emconf.php` file:: 'autoload' => [ 'psr-4' => [ 'Vendor\\ExtName\\' => 'Classes' ] ], Important: The prefix **must** end with a backslash. - :Key: autoload-dev :Data type: array :Description: Same as the configuration "autoload" but it is only used if the *ApplicationContext* is set to *Testing*. Deprecated configuration """""""""""""""""""""""" The following fields are deprecated and should not be used anymore: - dependencies - conflicts - suggests - docPath - CGLcompliance - CGLcompliance_note - private - download_password - shy - loadOrder - priority - internal - modify_tables - module - lockType - TYPO3_version - PHP_version