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Crystal Clear app display.png UtentiUser hub Nuvola-inspired-terminal.svg Amministratori di sistemaSysadmin hub Source code project 1171.svg SviluppatoriDeveloper hub

This is a high-level overview of MediaWiki development, including links to the key documents, resources and tools available to MediaWiki developers. It is written for skilled LAMP developers who have experience using MediaWiki.

Overview[edit | edit source]

MediaWiki is developed in an open source style[1] using the PHP programming language [2] primarily for the LAMP platform[3][4]. Core development is largely coordinated online.

  • Source code is managed using the Git revision control system. Read the Git article for an overview of how the MediaWiki developers use Git. Read the wikitech:Help:Access#Access FAQ article if you'd like access.[5]
  • Developers extending or interfacing with MediaWiki (instead working on the core code) have several convenient extension points, including the API, the Hooks system and Skins – see the #Extending MediaWiki section of this page for an overview.

Key documents[edit | edit source]

Code, development and style[edit | edit source]

  • Code review guide – a guide for reviewers of commits to the MediaWiki source code.

Debugging and testing[edit | edit source]

  • Bugs – an overview of bug tracking in the MediaWiki project.[6]
  • Unit testing – learn to write unit tests for MediaWiki using PHPUnit.

Architecture[edit | edit source]

  • Manual:Code – an overview of the key parts of MediaWiki's source code.
  • Localisation – learn about MediaWiki's internationalisation system.
  • Manual namespace on this wiki – documentation for developers.
  • MediaWiki Class Reference – technical documentation generated from the MediaWiki source code. (Note: The class reference is a large, slow-to-load page.)

Sub-systems[edit | edit source]

  • API – MediaWiki's API provides direct, high-level access to the data contained in the MediaWiki databases
  • ContentHandler – MediaWiki's framework for supporting custom types of page content.
  • Database access – an overview of using databases in MediaWiki, including a brief guide to the database abstraction layer.
  • Job queue – MediaWiki's framework for processing long-running tasks asynchronously.
  • Messages API – MediaWiki's framework for providing localized application messages with PHP or JavaScript.

Espansioni MediaWiki[edit | edit source]

MediaWiki has been designed to allow for modification without changing the "core code". This makes it easy to update to a new version of MediaWiki without having to manually merge in old extension code changes. There are six main extension points that allow developers to change or extend what MediaWiki can do. The extension points are:

  • API – access the data and metadata of MediaWiki instances through its powerful "Action" web API
  • Hooks - Aggiunge un simbolo x al markup wiki (ogni volta che compare x succede qualcosa)
  • Skins - Cambia l'aspetto grafico di MediaWiki.

Aiuto per sviluppatori di espansioni[edit | edit source]

Help for skin developers[edit | edit source]

Help for library code reuse[edit | edit source]

Third-party wiki uses[edit | edit source]

Notes[edit | edit source]

  1. Developers are a mix of volunteers and paid Wikimedia Foundation staff (or contractors). For a full list of who works on the MediaWiki code, read the DevelopersDevelopers article.
  2. Not all of MediaWiki is written in PHP. Some supporting tools are written in other languages, including batch files, shell scripts, makefiles and Python.
  3. MediaWiki runs on most platforms that can support PHP, however, the lack of certain utilities or operating system features may limit the functionality or performance of MediaWiki on non-LAMP platforms.
  4. MediaWiki has support for DBMS other than MySQL, including Oracle, PostgreSQL and SQLite.
  5. Browse the source code and revisions at or clone the development version of the code using this Git command:
    git clone MediaWiki
  6. Visit to see recent changes to bugs and issues in the Wikimedia Phabricator instance.