RELEASE-NOTES-1.34

   1 = MediaWiki 1.34 =
   2
   3 == MediaWiki 1.34.0-PRERELEASE ==
   4
   5 THIS IS NOT A RELEASE YET
   6
   7 MediaWiki 1.34 is an alpha-quality development branch, and is not recommended
   8 for use in production.
   9
  10 == Upgrading notes for 1.34 ==
  11 1.34 has several database changes since 1.33, and will not work without schema
  12 updates. Note that due to changes to some very large tables like the revision
  13 table, the schema update may take quite long (minutes on a medium sized site,
  14 many hours on a large site).
  15
  16 Don't forget to always back up your database before upgrading!
  17
  18 See the file UPGRADE for more detailed upgrade instructions, including
  19 important information when upgrading from versions prior to 1.11.
  20
  21 Some specific notes for MediaWiki 1.34 upgrades are below:
  22
  23 * …
  24
  25 For notes on 1.33.x and older releases, see HISTORY.
  26
  27 === Configuration changes for system administrators in 1.34 ===
  28
  29 ==== New configuration ====
  30 * $wgAllowExternalReqID (T201409) - This configuration setting controls whether
  31   Mediawiki accepts the request ID set by the incoming request via the
  32   `X-Request-Id` header. If set to `true`, that value will be used throughout
  33   the code as the request identificator. Otherwise, the sent header will be
  34   ignored and the request ID will either be taken from Apache's mod_unique
  35   module or will be generated by Mediawiki itself (depending on the set-up).
  36 * $wgEnableSpecialMute (T218265) - This configuration controls whether
  37   Special:Mute is available and whether to include a link to it on emails
  38   originating from Special:Email.
  39 * editmyuserjsredirect user right – users without this right now cannot edit JS
  40   redirects in their userspace unless the target of the redirect is also in
  41   their userspace. By default, this right is given to everyone.
  42
  43 ==== Changed configuration ====
  44 * $wgUseCdn, $wgCdnServers, $wgCdnServersNoPurge, and $wgCdnMaxAge – These four
  45   CDN-related config variables have been renamed from being specific to Squid –
  46   they were previously $wgUseSquid, $wgSquidServers, $wgSquidServersNoPurge, and
  47   $wgSquidMaxage respectively. This aligns them with the related existing
  48   variable $wgCdnMaxageLagged. The previous configuration variable names are
  49   deprecated, but will be used as the fall back if they are still set.
  50   Note that wgSquidPurgeUseHostHeader has not been renamed, as it is deprecated.
  51 * (T27707) File type checks for image uploads have been relaxed to allow files
  52   containing some HTML markup in metadata. As a result, the $wgAllowTitlesInSVG
  53   setting is no longer applied and is now always true. Note that MSIE 7 may
  54   still be able to misinterpret certain malformed PNG files as HTML.
  55 * Introduced $wgVerifyMimeTypeIE to allow disabling the MSIE 6/7 file type
  56   detection heuristic on upload, which is more conservative than the checks
  57   that were changed above.
  58 * $wgSkipSkin — Setting this instead of $wgSkipSkins, deprecated in 1.23, is now
  59   hard-deprecated.
  60 * $wgLocalInterwiki — Setting this instead of $wgLocalInterwikis, deprecated in
  61   1.23, is now hard-deprecated.
  62 * $wgProfileOnly — Setting this, deprecated in 1.23, is now hard-deprecated.
  63   Instead, set the log file in $wgDebugLogGroups['profileoutput'].
  64 * $wgProxyList — Setting this to an array with IP addresses in the array keys,
  65   which was deprecated in 1.30, no longer works. Instead, $wgProxyList should be
  66   an array with IP addresses as the values, or a string path to a file
  67   containing one IP address per line.
  68 * …
  69
  70 ==== Removed configuration ====
  71 * $wgWikiDiff2MovedParagraphDetectionCutoff — If you still want a custom change
  72   size threshold, please specify in php.ini, using the configuration variable
  73   wikidiff2.moved_paragraph_detection_cutoff.
  74 * $wgDebugPrintHttpHeaders - The default of including HTTP headers in the
  75   debug log channel is no longer configurable. The debug log itself remains
  76   configurable via $wgDebugLogFile.
  77 * $wgPasswordSalt – This setting, used for migrating exceptionally old, insecure
  78   password setups and deprecated since 1.24, is now removed.
  79 * $wgDBOracleDRCP - If you must use persistent connections, set DBO_PERSISTENT
  80   in the 'flags' field for servers in $wgDBServers (or $wgLBFactoryConf).
  81
  82 === New user-facing features in 1.34 ===
  83 * Special:Mute has been added as a quick way for users to block unwanted emails
  84   from other users originating from Special:EmailUser.
  85 * (T207577) Special:NewSection has been created as a shortcut to creating a new
  86   section on a page. When linked to, its subpage is used as the target
  87   ([[Special:NewSection/Test]] redirects to creating a new section in "Test").
  88   Otherwise, it displays a basic interface to allow the end user to specify
  89   the target manually.
  90
  91 === New developer features in 1.34 ===
  92 * The ImgAuthModifyHeaders hook was added to img_auth.php to allow modification
  93   of headers in private wikis.
  94 * Language::formatTimePeriod now supports the new 'avoidhours' option to output
  95   strings like "5 days ago" instead of "5 days 13 hours ago".
  96 * (T220163) Added SpecialMuteModifyFormFields hook to allow extensions
  97   to add fields to Special:Mute.
  98 * (T100896) Skin authors can define custom OOUI themes using OOUIThemePaths.
  99   See <https://www.mediawiki.org/wiki/OOUI/Themes> for details.
 100
 101 === External library changes in 1.34 ===
 102
 103 ==== New external libraries ====
 104 * …
 105
 106 ==== Changed external libraries ====
 107 * Updated Mustache from 1.0.0 to v3.0.1.
 108 * Updated OOUI from v0.31.3 to v0.33.4.
 109 * Updated composer/semver from 1.4.2 to 1.5.0.
 110 * Updated composer/spdx-licenses from 1.4.0 to 1.5.1 (dev-only).
 111 * Updated mediawiki/codesniffer from 25.0.0 to 26.0.0 (dev-only).
 112 * Updated cssjanus/cssjanus from 1.2.1 to 1.3.0.
 113 * Updated wikimedia/at-ease from 1.2.0 to 2.0.0.
 114 * Updated wikimedia/remex-html from 2.0.1 to 2.0.3.
 115 * Updated monolog/monolog from 1.22.1 to 1.24.0 (dev-only).
 116 * Updated wikimedia/object-factory from 1.0.0 to 2.1.0.
 117 * Updated wikimedia/timestamp from 2.2.0 to 3.0.0.
 118 * Updated wikimedia/xmp-reader from 0.6.2 to 0.6.3.
 119 * Updated mediawiki/mediawiki-phan-config from 0.6.0 to 0.6.1 (dev-only).
 120 * …
 121
 122 ==== Removed external libraries ====
 123 * The jquery.async module, deprecated in 1.33, was removed.
 124 * …
 125
 126 === Bug fixes in 1.34 ===
 127 * (T222529) If a log entry or page revision is recorded in the database with an
 128   empty username, attempting to display it will log an error and return a "no
 129   username available" to the user instead of silently displaying nothing or
 130   invalid links.
 131
 132 === Action API changes in 1.34 ===
 133 * The 'recenteditcount' response property from action=query list=allusers,
 134   deprecated in 1.25, has been removed.
 135
 136 === Action API internal changes in 1.34 ===
 137 * …
 138
 139 === Languages updated in 1.34 ===
 140 MediaWiki supports over 350 languages. Many localisations are updated regularly.
 141 Below only new and removed languages are listed, as well as changes to languages
 142 because of Phabricator reports.
 143
 144 * (T152908) Added language support for N'Ko (nqo).
 145
 146 === Breaking changes in 1.34 ===
 147 * The global functions wfSuppressWarnings and wfRestoreWarnings, deprecated in
 148   1.26, have been removed. Use Wikimedia\AtEase\AtEase::suppressWarnings() and
 149   Wikimedia\AtEase\AtEase::restoreWarnings() directly.
 150 * Preferences class, deprecated in 1.31, has been removed.
 151 * The following parts of code, deprecated in 1.32, were removed in favor of
 152   built-in PHP functions:
 153   * CryptRand class
 154   * CryptRand service
 155   * Functions of the MWCryptRand class: singleton(), wasStrong() and generate().
 156 * Language::setCode, deprecated in 1.32, was removed. Use Language::factory to
 157   create a new Language object with a different language code.
 158 * MWNamespace::clearCaches() has been removed.  So has the $rebuild parameter
 159   to MWNamespace::getCanonicalNamespaces(), which was deprecated since 1.31.
 160   Instead, reset services, such as by calling $this->overrideMwServices() (if
 161   your test extends MediaWikiTestCase). Services will generally not pick up
 162   configuration changes from after they were created, so you must reset
 163   services after any configuration change. Even if your code works now, it is
 164   likely to break in future versions as more code is moved to services.
 165 * The ill-defined "DatabaseOraclePostInit" hook has been removed.
 166 * PreferencesFormLegacy and PreferencesForm classes, deprecated in 1.32, have
 167   been removed.
 168 * ObjectFactory class, deprecated in 1.31, has been removed.
 169 * HWLDFWordAccumudlator class, deprecated in 1.28, has been removed.
 170 * XMPInfo, XMPReader and XMPValidate, deprecated in 1.32, have been removed.
 171 * The RedirectSpecialPage::execute method could sometimes return a Title object.
 172   This behavior was removed, and the method now matches the parent signature
 173   (SpecialPage::execute) which is to return HTML string or void.
 174   To obtain the destination title, use RedirectSpecialPage::getRedirect.
 175 * The 'recenteditcount' response property from action API action=query
 176   list=allusers, deprecated in 1.25, has been removed.
 177 * SearchEngine::userNamespaces(), SearchEngine::namespacesAsText(),
 178   SearchEngine::create(), SearchEngine::getSearchTypes() and
 179   SearchEngine::getNearMatch(), methods deprecated in 1.27, have been removed.
 180 * FileRepo::streamFile(), deprecated in 1.26, has been removed.
 181 * User::randomPassword() method, deprecated in 1.27, have been removed.
 182 * MWNamespace::canTalk(), deprecated in 1.30, have been removed.
 183 * Parser class property $mUniqPrefix, deprecated in 1.26, has been removed.
 184 * wfArrayFilter() and wfArrayFilterByKey(), deprecated in 1.32, have been
 185   removed.
 186 * wfMakeUrlIndexes() function, deprecated in 1.33, have been removed.
 187 * Method signatures in WatchedItemQueryServiceExtension have changed from taking
 188   User objects to taking UserIdentity objects. Extensions implementing this
 189   interface need to be changed accordingly.
 190 * User::getGroupPage() and ::makeGroupLinkHTML(), deprecated in 1.29, have been
 191   removed. Use UserGroupMembership::getGroupPage and ::getLink instead.
 192 * User::makeGroupLinkWiki(), deprecated in 1.29, has been removed. Use
 193   UserGroupMembership::getLink() instead.
 194 * SavepointPostgres, deprecated in 1.31, has been removed.
 195 * OutputPage::enableSectionEditLinks(), OutputPage::sectionEditLinksEnabled(),
 196   ParserOptions::getEditSection(), ParserOptions::setEditSection(), and
 197   ParserOutput::getEditSectionTokens, ::getTOCEnabled, ::setEditSectionTokens,
 198   and ::setTOCEnabled, deprecated in 1.31, have been removed.
 199 * EditPage::safeUnicodeInput() and ::safeUnicodeOutput(), deprecated in 1.30,
 200   have been removed.
 201 * Four methods in OutputPage, deprecated in 1.32, have been removed. You should
 202   use OutputPage::showFatalError or throw a FatalError instead. The methods are
 203   ::showFileCopyError(), ::showFileRenameError(), ::showFileDeleteError(), and
 204   ::showFileNotFoundError().
 205 * ApiBase::truncateArray(), deprecated in 1.32, has been removed.
 206 * IcuCollation::getICUVersion(), deprecated in 1.32, has been removed. Use PHP's
 207   INTL_ICU_VERSION constant directly.
 208 * HTMLForm::setSubmitProgressive(), deprecated in 1.32, has been removed.
 209 * ResourceLoaderStartUpModules::getStartupModules() and ::getLegacyModules(),
 210   both deprecated in 1.32, have been removed.
 211 * BaseTemplate::msgHtml() and QuickTemplate::msgHtml(), deprecated in 1.32, have
 212   been removed. Use ->msg() or ->getMsg() instead.
 213 * WatchAction::getUnwatchToken(), deprecated in 1.32, has been removed. Instead,
 214   use WatchAction::getWatchToken() with action 'unwatch' directly.
 215 * Language::initEncoding(), ::recodeForEdit(), and recodeInput(), deprecated in
 216   1.28, have been removed.
 217 * PageArchive::getTextFromRow(), ::listAllPages(), and ::getLastRevisionText(),
 218   deprecated in 1.32, have been removed.
 219 * OutputPage::getModuleScripts(), ParserOutput::getModuleScripts(), deprecated
 220   in 1.33, have been removed.
 221 * User::getPasswordValidity(), deprecated in 1.33, has been removed.
 222 * ApiQueryBase::prepareUrlQuerySearchString(), deprecated in 1.33, has been
 223   removed.
 224 * ChangeTags::purgeTagUsageCache(), deprecated in 1.33, has been removed.
 225 * JobQueueGroup::pushLazyJobs(), deprecated in 1.33, has been removed.
 226 * MediaWikiTestCase::stashMwGlobals(), deprecated in 1.32, has been removed.
 227 * SearchEngine::transformSearchTerm(), deprecated in 1.32, has been removed.
 228 * The Block typehint only refers to blocks stored in the database. It should be
 229   updated to AbstractBlock in cases where any type of block could be expected.
 230 * FileRepoStatus, deprecated in 1.25, has been removed.
 231 * The LegacyHookPreAuthenticationProvider class, deprecated since its creation
 232   in 1.27, has been removed.
 233 * IP::isValidBlock(), deprecated in 1.30, has been removed.
 234 * WikiPage::prepareContentForEdit now doesn't accept an integer for $revision,
 235   was deprecated in 1.25.
 236 * The jquery.byteLength module, deprecated in 1.31, was removed.
 237   Use the mediawiki.String module instead.
 238 * mw.language.specialCharacters, deprecated in 1.33, has been removed.
 239   Use require( 'mediawiki.language.specialCharacters' ) instead.
 240 * EditPage::submit(), deprecated in 1.29, has been removed. Use $this->edit()
 241   directly.
 242 * HTMLForm::getErrors(), deprecated in 1.28, has been removed. Use
 243   getErrorsOrWarnings() instead.
 244 * SpecialPage::getTitle(), deprecated in 1.23, has been removed. Use
 245   SpecialPage::getPageTitle() instead.
 246 * jquery.ui.effect-bounce, jquery.ui.effect-explode, jquery.ui.effect-fold
 247   jquery.ui.effect-pulsate, jquery.ui.effect-slide, jquery.ui.effect-transfer,
 248   which are no longer used, have now been removed.
 249 * SpecialEmailUser::validateTarget(), ::getTarget() without a sender/user
 250   specified, deprecated in 1.30, have been removed.
 251 * BufferingStatsdDataFactory::getBuffer(), deprecated in 1.30, has been removed.
 252 * The constant DB_SLAVE, deprecated in 1.28, has been removed. Use DB_REPLICA.
 253 * The constants NS_IMAGE and NS_IMAGE_TALK, deprecated in 1.14, have been
 254   removed. Use NS_FILE and NS_FILE_TALK respectively.
 255 * Replacer, DoubleReplacer, HashtableReplacer and RegexlikeReplacer
 256   (deprecated in 1.32) have been removed. Closures should be used instead.
 257 * OutputPage::addWikiText(), ::addWikiTextWithTitle(), ::addWikiTextTitleTidy(),
 258   ::addWikiTextTidy(), ::addWikiTextTitle(), deprecated in 1.32, have been
 259   removed.
 260 * The $wgUseKeyHeader configuration option and the OutputPage::getKeyHeader()
 261   method, deprecated in 1.32, have been removed.
 262 * WebInstallerOutput::addWikiText(), deprecated in 1.32, has been removed.
 263 * Parser::fetchFile(), deprecated in 1.32, has been removed. Use the method
 264   Parser::fetchFileAndTitle() instead.
 265 * The global function wfBCP47, deprecated in 1.31, has been removed.
 266 * wfCountDown() function, deprecated in 1.31, has been removed. Use
 267   \Maintenance::countDown() method instead.
 268 * OutputPage::wrapWikiMsg() no longer accepts an options parameter. This was
 269   deprecated since 1.20.
 270 * Skin::outputPage() no longer accepts a context. This was deprecated in 1.20.
 271 * Linker::link() no longer accepts a string for the query array, as was
 272   deprecated in 1.20.
 273 * PrefixSearch::titleSearch(), deprecated in 1.23, has been removed. Use the
 274   SearchEngine::defaultPrefixSearch or ::completionSearch() methods instead.
 275 * The UserRights hook, deprecated in 1.26, has been removed. Instead, use the
 276   UserGroupsChanged hook.
 277 * Skin::getDefaultInstance(), deprecated in 1.27, has been removed. Get the
 278   instance from MediaWikiServices instead.
 279 * The UserLoadFromSession hook, deprecated in 1.27, has been removed.
 280 * The wfResetSessionID global function, deprecated in 1.27, has been removed.
 281   Use MediaWiki\Session\SessionManager instead.
 282 * The wfGetLBFactory global function, deprecated in 1.27, has been removed.
 283   Use MediaWikiServices::getInstance()->getDBLoadBalancerFactory().
 284 * The internal method OutputPage->addScriptFile() will no longer silently drop
 285   calls that use an invalid path (i.e., something other than an absolute path,
 286   protocol-relative URL, or full scheme URL), and will instead pass them to the
 287   client where they will likely 404. This usage was deprecated in 1.24.
 288 * Database::reportConnectionError, deprecated in 1.32, has been removed.
 289 * APIEditBeforeSave hook, deprecated in 1.28, has been removed. Please see
 290   EditFilterMergedContent hook for an alternative way to use this feature.
 291 * API module methods getDescription(), getParamDescription(), & getExamples(),
 292   all deprecated in 1.25 and ignored, have been removed.
 293 * The API module method getDescriptionMessage(), deprecated in 1.30, has been
 294   removed.
 295 * The JavaScript global variable wgLoadScript has been removed. Use
 296   mw.util.wikiScript( 'load' ) instead.
 297 * ResourceLoader no longer creates the 'mw.legacy' placeholder object. It has
 298   been unused since 1.16 and was deprecated in 1.22. To deprecate a property
 299   in JavaScript, use mw.log.deprecate() instead.
 300 * The 'user.groups' module, deprecated in 1.28, was removed.
 301   Use the 'user' module instead.
 302 * The ResourceLoaderContext::expandModuleNames method, deprecated in 1.33, was
 303   removed. Use ResourceLoader::expandModuleNames instead.
 304 * The ability to override User::$mRights has been removed. Use
 305   PermissionManager::addTemporaryUserRights() instead.
 306 * Previously, when iterating ResultWrapper with foreach() or a similar
 307   construct, the range of the index was 1..numRows. This has been fixed to be
 308   0..(numRows-1).
 309 * The ChangePasswordForm hook, deprecated in 1.27, has been removed. Use the
 310   AuthChangeFormFields hook or security levels instead.
 311 * WikiMap::getWikiIdFromDomain(), deprecated in 1.33, has been removed.
 312   Use WikiMap::getWikiIdFromDbDomain() instead.
 313 * The config variables $wgHtml5, $wgJsMimeType, and $wgXhtmlDefaultNamespace,
 314   which were deprecated and ignored by core since 1.22, are no longer set to any
 315   value, and SkinTemplate no longer emits a 'jsmimetype' key. Any extensions not
 316   updated since 2013 to cope with this deprecation may now break.
 317 * (T222637) Passing ResourceLoaderModule objects to ResourceLoader::register()
 318   or $wgResourceModules is no longer supported.
 319   Use the 'class' or 'factory' option of the array format instead.
 320 * The parameter $lang of the functions generateTOC and tocList in Linker and
 321   DummyLinker must be in type Language when present. Other types are
 322   deprecated since 1.33.
 323 * The static properties mw.Api.errors and mw.Api.warnings, deprecated in 1.29,
 324   have been removed.
 325 * ParserOption::getSpeculativeRevIdCallback(), deprecated in 1.28, has been
 326   removed.
 327 * The UploadVerification hook, deprecated in 1.28, has been removed. Instead,
 328   use the UploadVerifyFile hook.
 329 * UploadBase:: and UploadFromChunks::stashFileGetKey() and stashSession(),
 330   deprecated in 1.28, have been removed. Instead, please use the getFileKey()
 331   method on the response from doStashFile().
 332 * LBFactory::setDomainPrefix() and LoadBalancer::setDomainPrefix(), deprecated
 333   in 1.33, have been removed. Use setLocalDomainPrefix() instead.
 334 * IDatabase::implicitGroupby(), deprecated in 1.30, has been removed.
 335 * IDatabase::doneWrites(), deprecated in 1.31, has been removed.
 336   Use IDatabase::lastDoneWrites() instead.
 337 * Database::reportConnectionError(), deprecated in 1.32, has been removed.
 338 * LoadBalancer::laggedSlaveUsed(), deprecated in 1.28, has been removed.
 339   Use LoadBalancer::laggedReplicaUsed() instead.
 340 * Database::getProperty(), deprecated in 1.28, has been removed.
 341 * IDatabase::getWikiId(), deprecated in 1.30, has been removed.
 342   Use IDatabase::getDomainID() instead.
 343 * (T191231) Support for using Oracle or MSSQL as database backends has been
 344   dropped.
 345 * …
 346
 347 === Deprecations in 1.34 ===
 348 * The MWNamespace class is deprecated. Use NamespaceInfo.
 349 * ExtensionRegistry->load() is deprecated, as it breaks dependency checking.
 350   Instead, use ->queue().
 351 * User::isBlocked() is deprecated since it does not tell you if the user is
 352   blocked from editing a particular page. Use User::getBlock() or
 353   PermissionManager::isBlockedFrom() or PermissionManager::userCan() instead.
 354 * User::isLocallyBlockedProxy and User::inDnsBlacklist are deprecated and moved
 355   to the BlockManager as private helper methods.
 356 * User::isDnsBlacklisted is deprecated. Use BlockManager::isDnsBlacklisted
 357   instead.
 358 * The Config argument to ChangesListSpecialPage::checkStructuredFilterUiEnabled
 359   is deprecated. Pass only the User argument.
 360 * WatchedItem::getUser is deprecated. Use getUserIdentity.
 361 * Passing a Title as the first parameter to the getTimestampById method of
 362   RevisionStore is deprecated. Omit it, passing only the remaining parameters.
 363 * Title::getPreviousRevisionId and Title::getNextRevisionId are deprecated. Use
 364   RevisionLookup::getPreviousRevision and RevisionLookup::getNextRevision.
 365 * The Title parameter to RevisionLookup::getPreviousRevision and
 366   RevisionLookup::getNextRevision is deprecated and should be omitted.
 367 * MWHttpRequest::factory is deprecated. Use HttpRequestFactory.
 368 * The Http class is deprecated. For the request, get, and post methods, use
 369   HttpRequestFactory. For isValidURI, use MWHttpRequest::isValidURI.  For
 370   getProxy, use (string)$wgHTTPProxy. For createMultiClient, construct a
 371   MultiHttpClient directly.
 372 * Http::$httpEngine is deprecated and has no replacement. The default 'guzzle'
 373   engine will eventually be made the only engine for HTTP requests.
 374 * RepoGroup::singleton(), RepoGroup::destroySingleton(),
 375   RepoGroup::setSingleton(), wfFindFile(), and wfLocalFile() are all
 376   deprecated. Use MediaWikiServices instead.
 377 * The getSubjectPage, getTalkPage, and getOtherPage of Title are deprecated.
 378   Use NamespaceInfo's getSubjectPage, getTalkPage, and getAssociatedPage.
 379 * MWMessagePack class, no longer used, has been deprecated in 1.34.
 380 * The Block class is separated into DatabaseBlock (for blocks stored in the
 381   database), and SystemBlock (for temporary blocks created by the system).
 382   SystemBlock should be used when creating any temporary blocks. Block is
 383   a deprecated alias for DatabaseBlock.
 384 * Parser::$mConf is deprecated. It will be removed entirely in a later version.
 385   Some context can be found at T224165.
 386 * Constructing Parser directly is deprecated. Obtain one from ParserFactory.
 387 * Title::moveSubpages is deprecated. Use MovePage::moveSubpages or
 388   MovePage::moveSubpagesIfAllowed.
 389 * The MWNamespace class is deprecated. Use MediaWikiServices::getNamespaceInfo.
 390 * (T62260) Hard deprecate Language::getExtraUserToggles() method.
 391 * Language::viewPrevNext function is deprecated, use
 392   PrevNextNavigationRenderer::buildPrevNextNavigation instead
 393 * User::trackBlockWithCookie and DatabaseBlock::clearCookie are deprecated. Use
 394   BlockManager::trackBlockWithCookie and BlockManager::clearCookie instead.
 395 * DatabaseBlock::setCookie, DatabaseBlock::getCookieValue,
 396   DatabaseBlock::getIdFromCookieValue and AbstractBlock::shouldTrackWithCookie
 397   are moved to internal helper methods for BlockManager::trackBlockWithCookie.
 398 * ResourceLoaderContext::getConfig and ResourceLoaderContext::getLogger have
 399   been deprecated. Inside ResourceLoaderModule subclasses, use the local methods
 400   instead. Elsewhere, use the methods from the ResourceLoader class.
 401 * The Preprocessor_DOM implementation has been deprecated.  It will be
 402   removed in a future release.  Use the Preprocessor_Hash implementation
 403   instead.
 404 * Sanitizer::attributeWhitelist() and Sanitizer::setupAttributeWhitelist()
 405   have been deprecated; they will be made private in the future.
 406 * SearchResult::termMatches() method is deprecated. It was unreliable because
 407   only populated by few search engine implementations. Use
 408   SqlSearchResult::getTermMatches() if really needed.
 409 * SearchResult::getTextSnippet( $terms ) the $terms param is being deprecated
 410   and should no longer be passed. Search engine implemenations should be
 411   responsible for carrying relevant information needed for highlighting with
 412   their own SearchResultSet/SearchResult sub-classes.
 413 * SearchResultSet::free() method is deprecated.
 414 * SearchEngine::$searchTerms protected field is deprecated. Moved to
 415   SearchDatabase.
 416 * The use of the $terms param in the ShowSearchHit and ShowSearchHitTitle
 417   hooks is highly discouraged as it's only populated by SearchDatabase search
 418   engines.
 419 * Skin::escapeSearchLink() is deprecated. Use Skin::getSearchLink() or the skin
 420   template option 'searchaction' instead.
 421 * LoadBalancer::haveIndex() and LoadBalancer::isNonZeroLoad() have
 422   been deprecated.
 423 * FileBackend::getWikiId() has been deprecated.
 424   Use FileBackend::getDomainId() instead.
 425 * User::getRights() and User::$mRights have been deprecated. Use
 426   PermissionManager::getUserPermissions() instead.
 427 * The LocalisationCacheRecache hook no longer allows purging of message blobs
 428   to be prevented. Modifying the $purgeBlobs parameter now has no effect.
 429 * SVGMetadataExtractor::getMetadata has been deprecated. Instead, you should
 430   use SVGReader->getMetadata() directly.
 431 * The following public properties on AbstractBlock are deprecated: $mReason,
 432   $mTimestamp, $mExpiry, $mHideName. Use the getters/setters instead.
 433 * The following public properties on DatabaseBlock are deprecated: $mAuto,
 434   $mParentBlockId. To check for an autoblock use DatabaseBlock::getType; to
 435   check for the parent ID, use DatabaseBlock::getParentBlockId.
 436 * SearchEngine::userHighlightPrefs() is deprecated, simply stop passing
 437   $contextlines and $contextchars to the SearchHighlighter methods, they will
 438   use proper defaults defined in SearchHighlighter::DEFAULT_CONTEXT_LINES and
 439   DEFAULT_CONTEXT_CHARS.
 440 * SearchUpdate constructor: passing a string as the title param and or a boolean
 441   or a string as the content will produce a deprecation warning.
 442 * SearchEngine::getTextFromContent() is deprecated, use getTextForSearchIndex()
 443   directly from the Content object.
 444 * SearchEngine::textAlreadyUpdatedForIndex() is deprecated, given the
 445   deprecation above this method is no longer needed/called and should not be
 446   implemented by SearchEngine implementation.
 447
 448 === Other changes in 1.34 ===
 449 * …
 450
 451 == Compatibility ==
 452 MediaWiki 1.34 requires PHP 7.0.13 or later. Although HHVM 3.18.5 or later is
 453 supported, it is generally advised to use PHP 7.0.13 or later for long term
 454 support.
 455
 456 MySQL/MariaDB is the recommended DBMS. PostgreSQL or SQLite can also be used,
 457 but support for them is somewhat less mature. There is experimental support for
 458 Oracle and Microsoft SQL Server.
 459
 460 The supported versions are:
 461
 462 * MySQL 5.5.8 or later
 463 * PostgreSQL 9.2 or later
 464 * SQLite 3.8.0 or later
 465 * Oracle 9.0.1 or later
 466 * Microsoft SQL Server 2005 (9.00.1399)
 467
 468 == Online documentation ==
 469 Documentation for both end-users and site administrators is available on
 470 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 471 for pages that explicitly state that their contents are in the public domain):
 472
 473        https://www.mediawiki.org/wiki/Special:MyLanguage/Documentation
 474
 475 == Mailing list ==
 476 A mailing list is available for MediaWiki user support and discussion:
 477
 478        https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 479
 480 A low-traffic announcements-only list is also available:
 481
 482        https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 483
 484 It's highly recommended that you sign up for one of these lists if you're
 485 going to run a public MediaWiki, so you can be notified of security fixes.
 486
 487 == IRC help ==
 488 There's usually someone online in #mediawiki on irc.freenode.net.