RELEASE-NOTES-1.31

   1 == MediaWiki 1.31.2 ==
   2
   3 THIS IS NOT A RELEASE YET
   4
   5 === Changes since MediaWiki 1.31.1 ===
   6 * (T204729) WatchedItemStore::countVisitingWatchersMultiple() shouldn't query all
   7   titles when asked for none
   8 * (T205967) Fix syntax error typo in postgres database upgrade file.
   9 * (T200254) Add pear/Net_SMTP 1.7.3 to composer dependencies.
  10 * (T206765) Load installer i18n when running update.php.
  11 * (T109121) Remove deprecated pear/mail_mime-decode from composer suggested libraries.
  12 * (T200595) Fix PHP 7.3 warnings of using "continue" in some scenarios instead
  13   of "break".
  14 * (T206979) Fix PHP 7.3 warnings of using "compact()" when some variables may
  15   not be set.
  16 * Fix PHP 7.3 warnings "preg_replace(): [...] invalid range in character class"
  17 * (T207540) Include IP address in "Login for $1 succeeded" log entry.
  18 * (T207541) Pass email address to mail().
  19 * (T207603) User JS may no longer be loaded with mime type text/javascript if
  20   there is no account associated with the username.
  21 * (T113042) Do not allow loading pages raw with a text/javascript MIME type if
  22   non-admins can edit the page.
  23 * (T194052) Updated wikimedia/base-convert from 1.0.1 to 2.0.0.
  24 * (T199494) Fix notices in maintenance/removeUnusuedAccounts.php
  25
  26 == MediaWiki 1.31.1 ==
  27
  28 This is a security and maintenance release of the MediaWiki 1.31 branch.
  29
  30 === Changes since MediaWiki 1.31.0 ===
  31 * (T169545, CVE-2018-0503) SECURITY: $wgRateLimits entry for 'user' overrides
  32   'newbie'.
  33 * (T194605, CVE-2018-0505) SECURITY: BotPasswords can bypass CentralAuth's
  34   account lock.
  35 * (T199029, CVE-2018-13258) SECURITY: Tarball was missing .htaccess files.
  36 * (T197229) Bundle Nuke extension, it was accidentally omitted.
  37 * (T193995) Fix undefined patchPath() method call in parser tests.
  38 * (T198687) Fix various selectFields methods to use the string 'NULL', not null.
  39 * Special:BotPasswords now requires reauthentication.
  40 * (T191608, T187638) Add 'logid' parameter to Special:Log.
  41 * (T193829) Indicate when a Bot Password needs reset.
  42 * (T198037) GitInfo: Don't try shelling out if it's disabled.
  43 * (T151415) Log email changes.
  44 * (T197206) Fix performance regression when multiple DB used without caching.
  45 * (T197030) PHPSessionHandler: Suppress headers warnings in initialize().
  46 * (T182377, T196793) Exif: Guard against uncountable tag values.
  47 * (T200861) Fix total breakage of SQLite web upgrade.
  48 * (T200864) Fix pingback over-reporting on non-MySQL databases
  49 * (T202550) Unbreak SpecialListusersHeaderForm and SpecialListusersHeader
  50   hooks.
  51
  52 === Changes since MediaWiki 1.31.0-rc.2 ===
  53 * (T195783) Initialize PSR-4 namespaces at same stage as normal autoloader.
  54 * (T196092) Hide MySQL binary/utf-8 charset option in the installer.
  55 * (T196185) Don't allow setting $wgDBmysql5 in the installer.
  56 * (T196125) php-memcached 3.0 (provided with PHP 7.0) is now supported.
  57 * (T182366) UploadBase::checkXMLEncodingMissmatch() now works on PHP 7.1+
  58 * (T118683) Fix exception from &$user deref on HHVM in the TitleMoveComplete hook.
  59 * (T196672) The mtime of extension.json files is now able to be zero
  60 * (T180403) Validate $length in padleft/padright parser functions.
  61 * (T143790) Make $wgEmailConfirmToEdit only affect edit actions.
  62
  63 === Changes since MediaWiki 1.31.0-rc.0 ===
  64 * (T33223) Drop archive.ar_text and ar_flags.
  65 * Add default edit rate limit of 90 edits/minute for all users.
  66 * (T187645) Use codepoint as tiebreaker when getting first-letters in
  67   IcuCollation.
  68 * (T191947) Don't shell during the installer if shelling out is disabled.
  69 * (T194319) Improve duplicate config setting exception as part of extension
  70   registration.
  71 * (T195211) Don't require trailing slash in PSR-4 autoloader directory.
  72 * (T186565) Fix PHP Notice from `ob_end_flush()` in `FileRepo::streamFile()`.
  73 * Do not incorrectly hide namespace input field in the installer.
  74 * (T186456) Refactor checks looking for PEAR maik libraries to be clearer.
  75
  76 === Important pre-upgrade notes for 1.31 ===
  77 * If you're using MySQL, SQLite, or MSSQL, are not using update.php to apply
  78   schema changes, and cannot have downtime to run migrateArchiveText.php and
  79   apply patch-drop-ar_text.sql manually, you'll have to apply a default value
  80   to the ar_text and ar_flags columns of the archive table or make those
  81   columns nullable before upgrading to MediaWiki 1.31.
  82   maintenance/archives/patch-nullable-ar_text.sql shows how to do this for MySQL.
  83 * The CologneBlue and Modern skins are no longer bundled with the tarball. You
  84   will need to remove the wfLoadSkin() calls from your LocalSettings.php or
  85   download them separately
  86   (<https://www.mediawiki.org/wiki/Special:SkinDistributor>).
  87
  88 === Configuration changes in 1.31 ===
  89 * $wgEnableAPI and $wgEnableWriteAPI are now deprecated and will be removed in
  90   a future version. The API is now considered to be stable, secure and
  91   essential.
  92 * $wgUsejQueryThree was removed, as it is now the default. This was documented
  93   as a temporary variable during the migration period, deprecated since 1.29.
  94 * $wgLogoHD has been updated to support svg images and uses $wgLogo where
  95   possible for fallback images such as png.
  96 * (T44246) $wgFilterLogTypes will no longer ignore 'patrol' when user does not
  97   have the right to mark things patrolled.
  98 * Wikis that contain imported revisions or CentralAuth global blocks should run
  99   maintenance/cleanupUsersWithNoId.php.
 100 * The configuration settings $wgResourceLoaderMinifierStatementsOnOwnLine and
 101   $wgResourceLoaderMinifierMaxLineLength, deprecated since 1.27, were removed.
 102 * (T180921) $wgReferrerPolicy now supports having fallbacks for browsers that
 103   are not using the latest version of the Referrer Policy specification.
 104 * $wgFragmentMode is now set to [ 'legacy', 'html5' ] by default. This is a
 105   first step of migration to human-readable section IDs that will later result
 106   in 'html5' being the default mode.
 107 * CACHE_ACCEL now only supports APC(u) or WinCache. XCache support was removed
 108   as upstream is inactive and has no plans to move to PHP 7.
 109 * The old CategorizedRecentChanges feature, including its related configuration
 110   option $wgAllowCategorizedRecentChanges, has been removed.
 111 * (T188472) The 'comma' value for $wgArticleCountMethod is no longer supported
 112   for performance reasons, and installations with this setting will now work as
 113   if it was configured with 'any'.
 114 * (T185753) MediaWiki now defaults to using RemexHtml to tidy up user input,
 115   rather than being off by default. If you wish to disable HTML tidying
 116   entirely, set $wgTidyConfig to null; if you wish to use the old, deprecated
 117   Tidy external binary, both set $wgTidyConfig to null and $wgUseTidy to true.
 118 * $wgLogAutopatrol now defaults to false instead of true.
 119 * $wgValidateAllHtml was removed and will be ignored.
 120 * $wgScriptExtension, deprecated and ignored since 1.25, was removed. See the
 121   1.25 release notes for more information.
 122 * $wgUseAjax is now marked as deprecated, just like the deprecated AJAX
 123   framework that it enables. Some extensions mistakenly used this to check
 124   whether any AJAX functionality at all should be enabled, further making this
 125   problematic to retain.
 126 * $wgDBmysql5 is now deprecated, and will be removed in a future version. It
 127   has been marked as experimental ever since it was introduced.
 128
 129 === New features in 1.31 ===
 130 * (T76554) User sub-pages named ….json are now protected in the same way that
 131   ….js and ….css pages are, so that configuration options can safely be placed
 132   there.
 133 * Wikimedia\Rdbms\IDatabase->select() and similar methods now support joins
 134   with parentheses for grouping.
 135 * As a first pass in standardizing dialog boxes across the MediaWiki product,
 136   Html class now provides helper methods for messageBox, successBox, errorBox
 137   and warningBox generation.
 138 * (T9240) Imports will now record unknown (and, optionally, known) usernames in
 139   a format like "iw>Example".
 140 * (T20209) Linker (used on history pages, log pages, and so on) will display
 141   usernames formed like "iw>Example" as interwiki links, as if by wikitext like
 142   [[iw:User:Example|iw>Example]].
 143 * (T111605) The 'ImportHandleUnknownUser' hook allows extensions to auto-create
 144   users during an import.
 145 * Added a hook, ParserOutputPostCacheTransform, to allow extensions to affect
 146   the ParserOutput::getText() post-cache transformations.
 147 * Added a hook, UploadForm:getInitialPageText, to allow extensions to alter the
 148   initial page text for file uploads.
 149 * (T181651) The info page for File pages now displays the file's base-16 SHA1
 150   hash value in the table of basic information.
 151 * Style tags with a 'data-mw-deduplicate' attribute will be deduplicated as a
 152   ParserOutput::getText() post-cache transformation. This may be disabled by
 153   passing 'deduplicateStyles' => false to that method.
 154 * The identity of the logged-in or IP "actor" for logged actions is being moved
 155   into a new actor table, with the rows in tables such as revision and logging
 156   referring to the actor ID instead of storing the user ID and name/IP in
 157   every row.
 158   * This is currently gated by $wgActorTableSchemaMigrationStage. Most wikis
 159     can set this to MIGRATION_NEW and run maintenance/migrateActors.php as
 160     soon as any necessary extensions are updated.
 161   * Most code accessing rows for logged actions from the database should use
 162     the relevant getQueryInfo() methods to get the information needed to build
 163     the SQL query. The ActorMigration class may also be used to get feature
 164     -flagged information needed to access actor-related fields during the
 165     migration period.
 166 * Added Wikimedia\Rdbms\IDatabase::cancelAtomic(), to roll back an atomic
 167   section without having to roll back the whole transaction.
 168 * Wikimedia\Rdbms\IDatabase::doAtomicSection(), non-native ::insertSelect(),
 169   and non-MySQL ::replace() and ::upsert() no longer roll back the whole
 170   transaction on failure.
 171 * (T189785) Added a monthly heartbeat ping to the pingback feature.
 172 * The CLI installer (maintenance/install.php) learned to detect and include
 173   extensions. Pass --with-extensions to enable that feature.
 174 * (T184791) rc_patrolled now has three states: "0" for unpatrolled,
 175   "1" for manually patrolled and "2" for autopatrolled actions.
 176 * Extensions can now set their type to "editor" if they provide an editor or
 177   enhance the editing experience.
 178 * Extensions can use a PSR-4 autoloader by setting an "AutoloadNamespaces"
 179   property in extension.json. See the documentation at
 180   <https://mediawiki.org/wiki/Manual:Extension.json/Schema#AutoloadNamespaces>
 181   for more details and an example.
 182 * (T19099) Tabs which link to pages that don't exist (like those to uncreated
 183   discussion pages) now have a tooltip to indicate state, not just colour.
 184
 185 === External library changes in 1.31 ===
 186 * pear/mail, pear/mail_mime and pear/mail_mime-decode have been moved from
 187   suggested to required. These packages now must be installed via composer
 188   and not via PEAR itself.
 189
 190 ==== Upgraded external libraries ====
 191 * Updated jquery.chosen from v0.9.14 to v1.8.2.
 192 * Updated composer/spdx-licenses from 1.1.4 to 1.3.0 (development dependency).
 193 * Updated nikic/php-parser from 2.1.0 to 3.1.3 (development dependency).
 194 * Updated wikimedia/ip-set from 1.1.0 to 1.2.0.
 195 * Updated wikimedia/relpath from 2.0.0 to 2.1.1.
 196 * Updated wikimedia/running-stat from 1.1.0 to 1.2.0.
 197 * Updated wikimedia/wrappedstring from 2.2.0 to 2.3.0.
 198 * Updated mediawiki/at-ease from 1.1.0 to 1.2.0.
 199 * Updated wikimedia/php-session-serializer from 1.0.4 to 1.0.6.
 200 * Updated wikimedia/remex-html from 1.0.2 to 1.0.3.
 201 * Updated wikimedia/html-formatter from 1.0.1 to 1.0.2.
 202
 203 ==== New external libraries ====
 204 * Added wikimedia/object-factory 1.0.0
 205
 206 ==== Removed and replaced external libraries ====
 207 * (T17845) The deprecated 'jquery.badge' module was removed.
 208 * The deprecated 'jquery.autoEllipsis' module was removed. Use the CSS
 209   text-overflow property instead.
 210 * The deprecated 'jquery.placeholder' module was removed.
 211 * The deprecated 'jquery.appear' module was removed. Use the
 212   'mediawiki.viewport' module instead.
 213 * mediawiki/at-ease was replaced with wikimedia/at-ease.
 214
 215 === Bug fixes in 1.31 ===
 216 * (T90902) Non-breaking space in header ID breaks anchor.
 217 * (T189375) CSSMin now allows quoted urls in `url()` syntax to start with a
 218   space.
 219 * (T2087, T10897, T87753, T174639) Whitespace created by category and language
 220   links is now stripped rather than leaving blank lines in odd places.
 221 * (T3780) Uploads with UTF-8 names now work on PHP7.1+ on Windows servers.
 222 * (T182366) UploadBase::checkXMLEncodingMissmatch() now works on PHP 7.1+
 223
 224 === Action API changes in 1.31 ===
 225 * (T185058) The 'name' value to tgprop for action=query&list=tags has been
 226   removed. It has never made a difference in the output, the name was always
 227   returned regardless.
 228 * The 'watch' and 'unwatch' parameters for action=move have been removed. They
 229   were deprecated and also accidentally nonfunctional since 1.17 in 2010. Use
 230   'watchlist' instead.
 231
 232 === Action API internal changes in 1.31 ===
 233 * ApiBase::getProfileDBTime, deprecated since 1.25, was removed.
 234 * ApiBase::getModuleProfileName, deprecated since 1.25, was removed.
 235 * ApiBase::getProfileTime, deprecated since 1.25, was removed.
 236
 237 === Languages updated in 1.31 ===
 238 MediaWiki supports over 350 languages. Many localisations are updated
 239 regularly. Below only new and removed languages are listed, as well as
 240 changes to languages because of Phabricator reports.
 241
 242 * (T180052) Mirandese (mwl) now supports gendered NS_USER/NS_USER_TALK.
 243 * (T182305) New language support: Nyungar (nys).
 244 * (T186359) New language support: Siberian Tatar [cебертатар] (sty).
 245 * (T186635) New language support: Guianan Creole (gcr).
 246 * (T186647) New language support: Kumyk [къумукъ] (kum).
 247 * (T187750) New language support: Spanish formal address (es-formal).
 248 * (T187824) New language support: Hungarian formal address (hu-formal).
 249 * (T189127) New language support: Gorontalo (gor).
 250
 251 === Breaking changes in 1.31 ===
 252 * MessageBlobStore::insertMessageBlob(), deprecated in 1.27, was removed.
 253 * The OutputPage class constructor now requires a context parameter.
 254   Instantiating without context was deprecated in 1.18.
 255 * The mw.page JavaScript singleton, deprecated in 1.30, was removed.
 256 * Article::getLastPurgeTimestamp(), WikiPage::getLastPurgeTimestamp(), and the
 257   related WikiPage::PURGE_* constants, deprecated in 1.29, were removed.
 258 * The Article::selectFields(), ::onArticleCreate(), ::onArticleDelete(), and
 259   ::onArticleEdit() methods, deprecated in 1.24, were removed.
 260 * Installer::locateExecutable() and ::locateExecutableInDefaultPaths() were
 261   removed. Use ExecutableFinder::findInDefaultPaths() instead.
 262 * The deprecated MW_DIFF_VERSION constant was removed.
 263   DifferenceEngine::MW_DIFF_VERSION should be used instead.
 264 * Due to significant refactoring, method ContribsPager::getUserCond() that had
 265   no access restriction has been removed.
 266 * The Block class will no longer accept usable-but-missing usernames for
 267   'byText' or ->setBlocker(). Callers should either ensure the blocker exists
 268   locally or use a new interwiki-format username like "iw>Example".
 269 * The following methods and constants from the WatchedItem class, which were
 270   deprecated in 1.27, have been removed:
 271   * WatchedItem::getTitle()
 272   * WatchedItem::fromUserTitle()
 273   * WatchedItem::addWatch()
 274   * WatchedItem::removeWatch()
 275   * WatchedItem::isWatched()
 276   * WatchedItem::duplicateEntries()
 277   * WatchedItem::IGNORE_USER_RIGHTS
 278   * WatchedItem::CHECK_USER_RIGHTS
 279   * WatchedItem::DEPRECATED_USAGE_TIMESTAMP
 280 * The $statementsOnOwnLine parameter of JavaScriptMinifier::minify was removed.
 281   $wgResourceLoaderMinifierStatementsOnOwnLine, the corresponding configuration
 282   variable, has been deprecated since 1.27 and was removed as well.
 283 * The $maxLineLength parameter of JavaScriptMinifier::minify was removed.
 284   $wgResourceLoaderMinifierMaxLineLength, the corresponding configuration
 285   variable, has been deprecated since 1.27 and was removed as well.
 286 * The HtmlFormatter class, deprecated in 1.27, was removed. The namespaced
 287   HtmlFormatter\HtmlFormatter class should be used instead.
 288 * The driver 'mysql' for MySQL, deprecated in MediaWiki 1.30, has been removed.
 289   The driver has been deprecated since PHP 5.5 and was removed in PHP 7.0. The
 290   default driver for MySQL has been 'mysqli' since MediaWiki 1.22.
 291 * The following properties of PreparedEdit were deprecated in 1.21 and have
 292   been removed:
 293   * PreparedEdit->newText
 294   * PreparedEdit->oldText
 295   * PreparedEdit->pst
 296 * ParserOutput objects which are generated using a non-default value for
 297   ParserOptions::setWrapOutputClass() can no longer be added to the parser
 298   cache.
 299 * The following deprecated methods from the OutputPage class have been removed:
 300   * OutputPage::addExtensionStyle(); deprecated in 1.27
 301   * OutputPage::getExtStyle(); deprecated in 1.27
 302   * OutputPage::setETag(); deprecated in 1.28 (obsolete no-op)
 303   * OutputPage::setSquidMaxage(); deprecated in 1.27
 304   * OutputPage::readOnlyPage(); deprecated in 1.25
 305   * OutputPage::rateLimited(); deprecated in 1.25
 306   * Additionally, the protected OutputPage::$mExtStyles array, only accessed
 307     through the above and with no known uses, was removed.
 308 * The no-op method Skin::showIPinHeader(), deprecated in 1.27, was removed.
 309 * The following variables and methods in EditPage, deprecated in MediaWiki 1.30,
 310   were removed:
 311   * $isCssJsSubpage — use ::isUserConfigPage()
 312   * $isCssSubpage — use ::isUserCssConfigPage()
 313   * $isJsSubpage — use ::isUserJsConfigPage()
 314   * $isWrongCaseCssJsPage – use ::isWrongCaseUserConfigPage()
 315   * ::getSummaryInput() – use ::getSummaryInputWidget()
 316   * ::getSummaryInputOOUI() – use ::getSummaryInputWidget()
 317   * ::getCheckboxes() – use ::getCheckboxesWidget() or
 318       ::getCheckboxesDefinition()
 319   * ::getCheckboxesOOUI() – use ::getCheckboxesWidget() or
 320       ::getCheckboxesDefinition()
 321 * ResourceLoaderModule::getPosition(), deprecated in 1.29, has been removed.
 322 * In User, the cookie-related methods which were wrappers for the functions on
 323   the response object, and were deprecated in 1.27, have been removed:
 324   * ::setCookie()
 325   * ::clearCookie()
 326   * ::setExtendedLoginCookie()
 327   Note that User::setCookies() remains, and is not deprecated.
 328 * Also in User, some auth-related methods which were deprecated in 1.27 have
 329   been removed:
 330   * ::getEditTokenTimestamp() – use MediaWiki\Session\Token::getTimestamp()
 331   * ::getPasswordFactory() – create a PasswordFactory directly
 332   * ::passwordChangeInputAttribs()
 333 * The global functions wfProfileIn and wfProfileOut, deprecated in 1.25, have
 334   been removed.
 335 * SpecialPageFactory::getList(), deprecated in 1.24, has been removed. You can
 336   use ::getNames() instead.
 337 * OpenSearch::getOpenSearchTemplate(), deprecated in 1.25, has been removed. You
 338   can use ApiOpenSearch::getOpenSearchTemplate() instead.
 339 * The global function wfBaseConvert, deprecated in 1.27, has been removed. Use
 340   Wikimedia\base_convert() directly.
 341 * Calling Database::begin() explicitly during an implicit transaction or when
 342   DBO_TRX is set results in an exception. Calling Database::commit() explicitly
 343   for an implicit transaction also results in an exception. Previously these
 344   were logged as errors. The startAtomic() and endAtomic() methods, or
 345   AtomicSectionUpdate should be used instead.
 346 * The global function wfOutputHandler() was removed, use the its replacement
 347   MediaWiki\OutputHandler::handle() instead. The global function was only
 348   sometimes defined. Its replacement is always available via the autoloader.
 349 * ChangeTags::listExtensionActivatedTags and ::listExtensionDefinedTags,
 350   deprecated in 1.28, have been removed. Use ::listSoftwareActivatedTags() and
 351   ::listSoftwareDefinedTags() instead.
 352 * Title::getTitleInvalidRegex(), deprecated in 1.25, has been removed. You can
 353   use MediaWikiTitleCodec::getTitleInvalidRegex() instead.
 354 * HTMLForm & VFormHTMLForm::isVForm(), deprecated in 1.25, have been removed.
 355 * The ProfileSection class, deprecated in 1.25 and unused, has been removed.
 356 * The ResourceLoaderGetLessVars hook, deprecated in 1.30, has been removed. Use
 357   ResourceLoaderModule::getLessVars() to expose local variables instead of
 358   global ones.
 359 * As part of work to modernise user-generated content clean-up, a config option
 360   and some methods related to HTML validity were removed without deprecation.
 361   The public methods MWTidy::checkErrors() and the path through which it was
 362   called, TidyDriverBase::validate(), are removed, as are the testing methods
 363   MediaWikiTestCase::assertValidHtmlSnippet() and ::assertValidHtmlDocument().
 364   The $wgValidateAllHtml configuration option is removed and will be ignored.
 365 * Execution of external programs using MediaWiki\Shell\Command now applies
 366   the RESTRICT_DEFAULT Firejail restriction by default.
 367 * The ResourceLoaderModule::getHashMtime() and ::getDefinitionMtime() methods,
 368   deprecated in 1.26, were removed.
 369 * The deprecated 'mediawiki.widgets.CategorySelector' module alias was removed.
 370   Use the 'mediawiki.widgets.CategoryMultiselectWidget' module directly.
 371
 372 === Deprecations in 1.31 ===
 373 * The Revision class was deprecated in favor of RevisionStore, BlobStore, and
 374   RevisionRecord and its subclasses.
 375 * The global function wfBCP47 is deprecated in favour of LanguageCode::bcp47.
 376 * The global function wfCountDown is now deprecated in favor of
 377   Maintenance::countDown.
 378 * Several methods for returning lists of fields to select from the database
 379   have been deprecated in favor of similar methods that also return the tables
 380   to select from and the join conditions for those tables.
 381   * Block::selectFields() → Block::getQueryInfo()
 382   * RecentChange::selectFields() → RecentChange::getQueryInfo()
 383   * ArchivedFile::selectFields() → ArchivedFile::getQueryInfo()
 384   * LocalFile::selectFields() → LocalFile::getQueryInfo()
 385   * LocalFile::getCacheFields() with a prefix no longer works
 386   * LocalFile::getLazyCacheFields() with a prefix no longer works
 387   * OldLocalFile::selectFields() → OldLocalFile::getQueryInfo()
 388   * RecentChange::selectFields() → RecentChange::getQueryInfo()
 389   * Revision::userJoinCond() → Revision::getQueryInfo( [ 'user' ] )
 390   * Revision::selectUserFields() → Revision::getQueryInfo( [ 'user' ] )
 391   * Revision::pageJoinCond() → Revision::getQueryInfo( [ 'page' ] )
 392   * Revision::selectPageFields() → Revision::getQueryInfo( [ 'page' ] )
 393   * Revision::selectTextFields() → Revision::getQueryInfo( [ 'text' ] )
 394   * Revision::selectFields() → Revision::getQueryInfo()
 395   * Revision::selectArchiveFields() → Revision::getArchiveQueryInfo()
 396   * User::selectFields() → User::getQueryInfo()
 397   * WikiPage::selectFields() → WikiPage::getQueryInfo()
 398 * Revision::setUserIdAndName() was deprecated.
 399 * Access to TitleValue class properties was deprecated, the relevant getters
 400   should be used instead.
 401 * DifferenceEngine::getDiffBodyCacheKey() is deprecated. Subclasses should
 402   override DifferenceEngine::getDiffBodyCacheKeyParams() instead.
 403 * Use of Maintenance::error( $err, $die ) to exit script was deprecated. Use
 404   Maintenance::fatalError() instead.
 405 * Passing a ParserOptions object to OutputPage::parserOptions() is deprecated.
 406 * The RevisionInsertComplete hook is now deprecated; use instead the hook
 407   RevisionRecordInserted. RevisionInsertComplete is still called, but the second
 408   and third parameter will always be null. Hard deprecation is scheduled for 1.32.
 409 * The following methods that get and set ParserOutput state are deprecated.
 410   Callers should use the new stateless $options parameter to
 411   ParserOutput::getText() instead.
 412   * ParserOptions::getEditSection()
 413   * ParserOptions::setEditSection()
 414   * ParserOutput::getEditSectionTokens()
 415   * ParserOutput::setEditSectionTokens()
 416   * ParserOutput::getTOCEnabled()
 417   * ParserOutput::setTOCEnabled()
 418   * OutputPage::enableSectionEditLinks()
 419   * OutputPage::sectionEditLinksEnabled()
 420   * The public ParserOutput state fields $mTOCEnabled and $mEditSectionTokens
 421     are also deprecated.
 422 * License::getLicenses has been deprecated; use License::getLines instead.
 423 * QuickTemplate::setRef() was deprecated in favour of QuickTemplate::set().
 424   Setting template variables by reference allowed violating the principle of
 425   data being immutable once added to the skin template. In practice, this method
 426   was not being used for that. Rather, setRef() existed as memory optimisation
 427   for PHP 4.
 428 * QuickTemplate::setTranslator() and MediaWikiI18N::set() were deprecated in
 429   favour of Skin::msg() parameters.
 430 * MediaWikiI18N::translate() was deprecated in favour of Skin::msg() or
 431   wfMessage().
 432 * Passing false to ParserOptions::setWrapOutputClass() is deprecated. Use the
 433   'unwrap' transform to ParserOutput::getText() instead.
 434 * \ObjectFactory (no namespace) is deprecated, the namespaced class
 435   \Wikimedia\ObjectFactory from the wikimedia/object-factory library should be
 436   used instead.
 437 * CommentStore::newKey is deprecated. Instead, get an instance from
 438   MediaWikiServices.
 439 * The following CommentStore methods have had their signatures changed to
 440   introduce a $key parameter, usage of the methods on instances retrieved from
 441   CommentStore::newKey will remain unchanged but deprecated:
 442   * CommentStore::getFields
 443   * CommentStore::getJoin
 444   * CommentStore::getComment
 445   * CommentStore::getCommentLegacy
 446   * CommentStore::insert
 447   * CommentStore::insertWithTemplate
 448 * The following methods in Title have been renamed, and the old ones are
 449   deprecated:
 450   * Title::getSkinFromCssJsSubpage – use ::getSkinFromConfigSubpage
 451   * Title::isCssOrJsPage – use ::isSiteConfigPage
 452   * Title::isCssJsSubpage – use ::isUserConfigPage
 453   * Title::isCssSubpage – use ::isUserCssConfigPage
 454   * Title::isJsSubpage – use ::isUserJsConfigPage
 455 * The following methods related to caching of half-parsed HTML were deprecated:
 456   * Parser::serializeHalfParsedText()
 457   * Parser::unserializeHalfParsedText()
 458   * Parser::isValidHalfParsedText()
 459   * StripState::getSubState()
 460   * StripState::merge()
 461 * The DeferredStringifier class is deprecated, use Message::listParam() instead.
 462 * The type string for the parameter $lang of DateFormatter::getInstance is
 463   deprecated.
 464 * Wikimedia\Rdbms\SavepointPostgres is deprecated.
 465 * The DO_MAINTENANCE constant is deprecated. RUN_MAINTENANCE_IF_MAIN should be
 466   used instead.
 467 * The function wfShellWikiCmd() has been deprecated, use
 468   MediaWiki\Shell::makeScriptCommand().
 469 * In the future, the hooks 'PreferencesFormPreSave' and 'PreferencesGetLegend'
 470   will be allowed to provide any HTMLForm object rather than PreferencesForm.
 471
 472 === Other changes in 1.31 ===
 473 * Browser support for Internet Explorer 10 was lowered from Grade A to Grade C.
 474 * Browser support for Opera 12 and older was dropped entirely. Opera 15+
 475   continues at Grade A.
 476 * Multi-content-revision capability was introduced into the storage layer. See
 477   <https://mediawiki.org/wiki/Requests_for_comment/Multi-Content_Revisions>.
 478 * The "free" CSS class is now only applied to unbracketed URLs in wikitext.
 479   Links written using square brackets will get the class "text" not "free".
 480 * RFC 157418: Whitespace is trimmed from wikitext headings, wikitext list items,
 481   wikitext table captions, wikitext table headings, wikitext table cells. HTML
 482   headings, HTML list items, HTML table captions, HTML table headings, HTML
 483   table cells will not have this trimming behavior.
 484
 485 == Compatibility ==
 486 MediaWiki 1.31 requires PHP 7.0.0 or later. Although HHVM 3.18.5 or later is
 487 supported, it is generally advised to use PHP 7.0.0 or later for long term
 488 support. MediaWiki requires that the mbstring, xml, ctype, json, iconv and
 489 fileinfo PHP extensions are loaded to work.
 490
 491 MySQL/MariaDB is the recommended DBMS. PostgreSQL or SQLite can also be used,
 492 but support for them is somewhat less mature. There is experimental support for
 493 Oracle and Microsoft SQL Server.
 494
 495 The supported versions are:
 496
 497 * MySQL 5.5.8 or later
 498 * PostgreSQL 9.2 or later
 499 * SQLite 3.3.7 or later
 500 * Oracle 9.0.1 or later
 501 * Microsoft SQL Server 2005 (9.00.1399)
 502
 503 == Upgrading ==
 504 1.31 has several database changes since 1.30, and will not work without schema
 505 updates. Note that due to changes to some very large tables like the revision
 506 table, the schema update may take quite long (minutes on a medium sized site,
 507 many hours on a large site).
 508
 509 Don't forget to always back up your database before upgrading!
 510
 511 See the file UPGRADE for more detailed upgrade instructions, including
 512 important information when upgrading from versions prior to 1.11.
 513
 514 For notes on 1.30.x and older releases, see HISTORY.
 515
 516 == Online documentation ==
 517 Documentation for both end-users and site administrators is available on
 518 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 519 for pages that explicitly state that their contents are in the public domain):
 520
 521        https://www.mediawiki.org/wiki/Special:MyLanguage/Documentation
 522
 523 == Mailing list ==
 524 A mailing list is available for MediaWiki user support and discussion:
 525
 526        https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 527
 528 A low-traffic announcements-only list is also available:
 529
 530        https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 531
 532 It's highly recommended that you sign up for one of these lists if you're
 533 going to run a public MediaWiki, so you can be notified of security fixes.
 534
 535 == IRC help ==
 536 There's usually someone online in #mediawiki on irc.freenode.net.