as upstream is inactive and has no plans to move to PHP 7.
* The old CategorizedRecentChanges feature, including its related configuration
option $wgAllowCategorizedRecentChanges, has been removed.
+* (T188472) The 'comma' value for $wgArticleCountMethod is no longer supported for
+ performance reasons, and installations with this setting will now work as if it
+ was configured with 'any'.
=== New features in 1.31 ===
* Wikimedia\Rdbms\IDatabase->select() and similar methods now support
* Style tags with a 'data-mw-deduplicate' attribute will be deduplicated as a
ParserOutput::getText() post-cache transformation. This may be disabled by
passing 'deduplicateStyles' => false to that method.
+* The identity of the logged-in or IP "actor" for logged actions is being moved
+ into a new actor table, with the rows in tables such as revision and logging
+ referring to the actor ID instead of storing the user ID and name/IP in
+ every row.
+ * This is currently gated by $wgActorTableSchemaMigrationStage. Most wikis
+ can set this to MIGRATION_NEW and run maintenance/migrateActors.php as
+ soon as any necessary extensions are updated.
+ * Most code accessing rows for logged actions from the database should use
+ the relevant getQueryInfo() methods to get the information needed to build
+ the SQL query. The ActorMigration class may also be used to get feature-flagged
+ information needed to access actor-related fields during the migration
+ period.
=== External library changes in 1.31 ===
* (T186359) New language support: Siberian Tatar [cебертатар] (sty).
* (T186635) New language support: Guianan Creole (gcr).
* (T186647) New language support: Kumyk [къумукъ] (kum).
+* (T187750) New language support: Spanish formal address (es-formal).
=== Other changes in 1.31 ===
+* Browser support for Internet Explorer 10 was lowered from Grade A to Grade C.
* Introducing multi-content-revision capability into the storage layer. For details,
see <https://www.mediawiki.org/wiki/Requests_for_comment/Multi-Content_Revisions>.
* The Revision class was deprecated in favor of RevisionStore, BlobStore, and
* CommentStore::getCommentLegacy
* CommentStore::insert
* CommentStore::insertWithTemplate
+* The following methods in Title have been renamed, and the old ones are deprecated:
+ * Title::getSkinFromCssJsSubpage – use ::getSkinFromConfigSubpage
+ * Title::isCssOrJsPage – use ::isSiteConfigPage
+ * Title::isCssJsSubpage – use ::isUserConfigPage
+ * Title::isCssSubpage – use ::isUserCssConfigPage
+ * Title::isJsSubpage – use ::isUserJsConfigPage
+* The following variables and method in EditPage, deprecated in MediaWiki 1.30, were removed:
+ * $isCssJsSubpage — use ::isUserConfigPage()
+ * $isCssSubpage — use ::isUserCssConfigPage()
+ * $isJsSubpage — use ::isUserJsConfigPage()
+ * $isWrongCaseCssJsPage – use ::isWrongCaseUserConfigPage()
* The method ResourceLoaderModule::getPosition(), deprecated in 1.29, has been removed.
* The DeferredStringifier class is deprecated, use Message::listParam() instead.
+* The type string for the parameter $lang of DateFormatter::getInstance is
+ deprecated.
+* The global functions wfProfileIn and wfProfileOut, deprecated in 1.25, have been removed.
== Compatibility ==
MediaWiki 1.31 requires PHP 5.5.9 or later. Although HHVM 3.18.5 or later is supported,