Compatibility/nl

Het streven van MediaWiki is om in grote lijnen te zorgen dat er compatibiliteit is tussen versies, dit met een bereik tussen de huidige en oudere software. Maar het de uitbreiding van de functionaliteit en groei van de mogelijkheden is het ondersteunen van oudere versies maar beperkt mogelijk en wordt oud toch echt verouderd.

Als je een wijziging wilt voorstellen over wat MediaWiki moet ondersteunen, laat dan een bestand met een verzoek voor commentaar achter op Phabricator.

Server software
These sections provide an overview of the software required on the server to run MediaWiki.

PHP
De meest recente stabiele versie van MediaWiki draait op elke versie PHP vanaf PHP.

Voor toekomstige versies, zie.

Ondersteuning van HHVM is gestopt in MediaWiki 1.34. Het gebruik ervan wordt sterk afgeraden.

Database
MediaWiki ondersteunt meerdere soorten database servers. Het gebruik van MySQL of MariaDB wordt aanbevolen.

Using any other database software is not recommended for production use. Support differs from MediaWiki version to MediaWiki version and ranges from dubious to stable. MediaWiki heeft abstractie lagen voor PostgreSQL en SQLite, die in het algemeen goed onderhouden zijn.

Upgrade
Sinds MediaWiki 1.36, wordt alleen upgraden van de twee laatste major LTS-releases ondersteund. (Zie T259771.) Upgrades van oudere versies zullen in meerdere stappen gedaan moeten worden. Als je naar 1.36 wilt upgraden en je hebt 1.23, dan moet je eerst upgraden van 1.23 wiki naar 1.27 (of 1.35),en daarna naar 1.27 (of 1.35), en daarna naar 1.36.

Webserver
MediaWiki is in grote lijnen compatibel met alle grote webbrowsers die om kunnen gaan met een compatibel versie van PHP. Apache wordt het meest gebruikt en getest. Nginx is ook een goede keuze.

MediaWiki extensies
Zolang de extensie goed beheert wordt (let op de informatie op de beschrijvingspagina van de extensie), zal de hoofdbranch van de extensie compatibel zijn met de hoofdbranch van MediaWiki. Als je moet inschatten of oudere MediaWiki versies compatibel zijn met de extensie, kun je het volgende algemene beleid van extensies proberen in te schatten:

Back-compatibility hacks are added to the extension source code as needed. So e.g. if you use MediaWiki, you should use the branch of the extension. So e.g. if you use MediaWiki, you should use the branch of the extension. If you use a non-LTS version of MediaWiki, usually you will need to use the extension's branch for the previous LTS version. For instance, MediaWiki 1.34 wikis using a ltsrel extension would usually use the REL1_31 branch of that extension. However, there is no guarantee of compatibility.
 * master (key: master): the master branch of the extension is compatible with both current and older versions of MediaWiki.
 * release branches (key: rel): For every MediaWiki release, there is a corresponding branch in the extension.
 * long-term support release branches (key: ltsrel): For every MediaWiki release that is a Long Term Support release (see Version lifecycle release policy) there is a corresponding branch in the extension.

The  field of the  infobox tells which policy is used by a given extension. Use the respective keys indicated above to specify the information.

Some extensions may have more specific compatibility policies, for instance:
 * MediaWiki Language Extension Bundle#Background

Algemene informatie
Het aantal verschillende webbrowsers in de wereld lijkt maar te blijven groeien.

Het zijn er te veel om ze afzonderlijk te testen en te ondersteunen. Wij gebruiken drie niveaus van ondersteuning voor gebruik van webbrowsers. Elke laag staat voor een verschillende categorie van webbrowsers.

Modern (Trap A)
This group represents the highest level of support (also known as Grade A). Features take advantage of capabilities in modern browsers, while allowing a graceful fallback for older browsers. All features provided by the software (whether or not in a degraded form) must work in these browsers.

Browsers in this category are known (listed below) and actively tested against. Problems users perceive in these browsers are addressed with high priority.

Standaard (Trap C)
This group is provided the core functionality of the MediaWiki platform (also known as Grade C). Our HTTP responses are compatible with these browsers (e.g. HTTP features we rely on, character encoding, and image formats used by the content; must work in these browsers). In the front-end this means content is presented in a readable manner.

Some of browsers in this category are known to be incompatible with modern JavaScript, and therefore do not get JavaScript features. They are identified via a feature test suite and a user agent filter in the startup module. Other browsers (listed below) in Grade B still get JavaScript features, but support for it may break or be discontinued at some future point.

Onbekend (Trap X)
This group represents all other browsers (also known as Grade X). This includes:


 * Browsers or browser versions that are no longer developed or maintained, and incompatible with modern Internet standard; MediaWiki may choose to drop support.
 * Browsers not popular enough to justify the added maintenance cost for software development; problems users perceive in these browsers only are given low priority.

MediaWiki handles these browsers the same as Modern (Grade A) browsers and they are thus assumed to be capable. This principle provides various important benefits:


 * New or unsupported versions of modern browsers may temporarily be considered Unknown if they are not yet tested against by us. Treating Unknown browsers as capable ensures optimal user experience in these browsers.
 * Users of new and evolving browsers are given a chance to have a modern experience.
 * Users of less popular browsers based on, or derived from, known modern browsers are not negatively impacted (e.g. Iceweasel).

In de praktijk is het enige verschil tussen Onbekende en Moderne browsers dat we niet actief met Onbekende browsers testen.

These browsers are given the full feature set, which means HTTP, HTML, CSS and JS feature may or may not be compatible with these browsers, and may or may not be affected by measures (e.g. fallback CSS for newer CSS features) intended for Grade C browsers. In particular, whether JavaScript support is enabled is decided by a feature test suite and a user agent filter (see above).

Speciale behandeling voor IE11
Starting in March 2021, new JavaScript features on any Wikimedia project will not be supported on IE11, as documented at. This is the beginning of downgrading this browser to Basic (Grade C) support.

Browser support matrix
The principles and different grades described above apply to MediaWiki core and extensions alike. The support matrix below applies these grades in the context of MediaWiki core, Wikimedia Foundation infrastructure, and any MediaWiki extensions that decide to follow it. Individual extensions may have their own support matrix distributing browsers among the different levels of support. See also Browser usage breakdown dashboard.

Mobiel
The Web team at the Wikimedia Foundation applies a narrower support matrix for mobile-specific skins e.g. and/or extensions designed only to run on mobile devices e.g.. The support matrix is compiled from the data provided by the analytics user agent breakdown dashboard. Where browser usage is over 5%, a modern experience (Grade A) is supported. Basic support (Grade C) is provided for anything over 0.1% during the previous 12 months. In mobile we strive to provide a Grade B. Users of grade B may or may not get JavaScript and we do not test to the same level as A, thus we prioritize bug fixes lower. Modern support browser list on MobileFrontend is defined in file.

Anything absent in the list or older is considered a basic supported browser.

Zie ook

 * van MediaWiki versies
 * MediaWiki - compatibility error note (example)
 * HTTPS/Browser Recommendations
 * HTTPS/Browser Recommendations