== MediaWiki 1.33 ==

THIS IS NOT A RELEASE YET

MediaWiki 1.33 is an alpha-quality branch and is not recommended for use in
production.

=== Configuration changes in 1.33 ===

==== New configuration ====
* …

==== Changed configuration ====
* …

==== Removed configuration ====
* …

=== New features in 1.33 ===
* …

=== External library changes in 1.33 ===

==== New external libraries ====
* …

==== Changed external libraries ====
* …

==== Removed external libraries ====
* …

=== Bug fixes in 1.33 ===
* …

=== Action API changes in 1.33 ===
* (T198913) Added 'ApiOptions' hook.
* …

=== Action API internal changes in 1.33 ===
* …

=== Languages updated in 1.33 ===
MediaWiki supports over 350 languages. Many localisations are updated regularly.
Below only new and removed languages are listed, as well as changes to languages
because of Phabricator reports.

* …

=== Breaking changes in 1.33 ===
* The parameteter $lang in DifferenceEngine::setTextLanguage must be of type
  Language. Other types are deprecated since 1.32.
* Skin::doEditSectionLink requires type Language for the parameter $lang.
  The parameters $tooltip and $lang are mandatory. Omitting the parameters is
  deprecated since 1.32.
* …

=== Deprecations in 1.33 ===
* The configuration option $wgUseESI has been deprecated, and is expected
  to be removed in a future release.
* The configuration option $wgSquidPurgeUseHostHeader has been deprecated,
  and is expected to be removed in a future release.
* …

=== Other changes in 1.33 ===
* …

== Compatibility ==
MediaWiki 1.33 requires PHP 7.0.0 or later. Although HHVM 3.18.5 or later is
supported, it is generally advised to use PHP 7.0.0 or later for long term
support.

MySQL/MariaDB is the recommended DBMS. PostgreSQL or SQLite can also be used,
but support for them is somewhat less mature. There is experimental support for
Oracle and Microsoft SQL Server.

The supported versions are:

* MySQL 5.5.8 or later
* PostgreSQL 9.2 or later
* SQLite 3.3.7 or later
* Oracle 9.0.1 or later
* Microsoft SQL Server 2005 (9.00.1399)

== Upgrading ==
1.33 has several database changes since 1.32, and will not work without schema
updates. Note that due to changes to some very large tables like the revision
table, the schema update may take quite long (minutes on a medium sized site,
many hours on a large site).

Don't forget to always back up your database before upgrading!

See the file UPGRADE for more detailed upgrade instructions, including
important information when upgrading from versions prior to 1.11.

For notes on 1.32.x and older releases, see HISTORY.

== Online documentation ==
Documentation for both end-users and site administrators is available on
MediaWiki.org, and is covered under the GNU Free Documentation License (except
for pages that explicitly state that their contents are in the public domain):

       https://www.mediawiki.org/wiki/Special:MyLanguage/Documentation

== Mailing list ==
A mailing list is available for MediaWiki user support and discussion:

       https://lists.wikimedia.org/mailman/listinfo/mediawiki-l

A low-traffic announcements-only list is also available:

       https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce

It's highly recommended that you sign up for one of these lists if you're
going to run a public MediaWiki, so you can be notified of security fixes.

== IRC help ==
There's usually someone online in #mediawiki on irc.freenode.net.