= MediaWiki 1.34 =

== MediaWiki 1.34.0-PRERELEASE ==

THIS IS NOT A RELEASE YET

MediaWiki 1.34 is an alpha-quality development branch, and is not recommended
for use in production.

== Upgrading notes for 1.34 ==
1.34 has several database changes since 1.33, 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.

Some specific notes for MediaWiki 1.34 upgrades are below:

* …

For notes on 1.33.x and older releases, see HISTORY.

=== Configuration changes for system administrators in 1.34 ===
==== New configuration ====
* …

==== Changed configuration ====
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==== Removed configuration ====
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=== New user-facing features in 1.34 ===
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=== New developer features in 1.34 ===
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=== External library changes in 1.34 ===
==== New external libraries ====
* …

==== Changed external libraries ====
* Updated Mustache from 1.0.0 to v3.0.1.
* …

==== Removed external libraries ====
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=== Bug fixes in 1.34 ===
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=== Action API changes in 1.34 ===
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=== Action API internal changes in 1.34 ===
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=== Languages updated in 1.34 ===
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 1.34 ===
* Preferences class, deprecated in 1.31, has been removed.
* The following parts of code, deprecated in 1.32, were removed in favor of
  built-in PHP functions:
  * CryptRand class
  * CryptRand service
  * Functions of the MWCryptRand class: singleton(), wasStrong() and generate().
* Language::setCode, deprecated in 1.32, was removed. Use Language::factory to
  create a new Language object with a different language code.
* MWNamespace::clearCaches() has been removed.  So has the $rebuild parameter
  to MWNamespace::getCanonicalNamespaces(), which was deprecated since 1.31.
  Instead, reset services, such as by calling $this->overrideMwServices() (if
  your test extends MediaWikiTestCase). Services will generally not pick up
  configuration changes from after they were created, so you must reset
  services after any configuration change. Even if your code works now, it is
  likely to break in future versions as more code is moved to services.
* The ill-defined "DatabaseOraclePostInit" hook has been removed.

=== Deprecations in 1.34 ===
* The MWNamespace class is deprecated. Use MediaWikiServices::getNamespaceInfo.
* …

=== Other changes in 1.34 ===
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== Compatibility ==
MediaWiki 1.34 requires PHP 7.0.13 or later. Although HHVM 3.18.5 or later is
supported, it is generally advised to use PHP 7.0.13 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 3.8.0 or later
* Oracle 9.0.1 or later
* Microsoft SQL Server 2005 (9.00.1399)

== 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.