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 * (T226733) Add rate limiter to Special:ConfirmEmail.
  43
  44 ==== Changed configuration ====
  45 * $wgUseCdn, $wgCdnServers, $wgCdnServersNoPurge, and $wgCdnMaxAge – These four
  46   CDN-related config variables have been renamed from being specific to Squid –
  47   they were previously $wgUseSquid, $wgSquidServers, $wgSquidServersNoPurge, and
  48   $wgSquidMaxage respectively. This aligns them with the related existing
  49   variable $wgCdnMaxageLagged. The previous configuration variable names are
  50   deprecated, but will be used as the fall back if they are still set.
  51   Note that wgSquidPurgeUseHostHeader has not been renamed, as it is deprecated.
  52 * (T27707) File type checks for image uploads have been relaxed to allow files
  53   containing some HTML markup in metadata. As a result, the $wgAllowTitlesInSVG
  54   setting is no longer applied and is now always true. Note that MSIE 7 may
  55   still be able to misinterpret certain malformed PNG files as HTML.
  56 * Introduced $wgVerifyMimeTypeIE to allow disabling the MSIE 6/7 file type
  57   detection heuristic on upload, which is more conservative than the checks
  58   that were changed above.
  59 * $wgSkipSkin — Setting this instead of $wgSkipSkins, deprecated in 1.23, is now
  60   hard-deprecated.
  61 * $wgLocalInterwiki — Setting this instead of $wgLocalInterwikis, deprecated in
  62   1.23, is now hard-deprecated.
  63 * $wgProfileOnly — Setting this, deprecated in 1.23, is now hard-deprecated.
  64   Instead, set the log file in $wgDebugLogGroups['profileoutput'].
  65 * $wgProxyList — Setting this to an array with IP addresses in the array keys,
  66   which was deprecated in 1.30, no longer works. Instead, $wgProxyList should be
  67   an array with IP addresses as the values, or a string path to a file
  68   containing one IP address per line.
  69 * …
  70
  71 ==== Removed configuration ====
  72 * $wgWikiDiff2MovedParagraphDetectionCutoff — If you still want a custom change
  73   size threshold, please specify in php.ini, using the configuration variable
  74   wikidiff2.moved_paragraph_detection_cutoff.
  75 * $wgDebugPrintHttpHeaders - The default of including HTTP headers in the
  76   debug log channel is no longer configurable. The debug log itself remains
  77   configurable via $wgDebugLogFile.
  78 * $wgPasswordSalt – This setting, used for migrating exceptionally old, insecure
  79   password setups and deprecated since 1.24, is now removed.
  80 * $wgDBOracleDRCP - If you must use persistent connections, set DBO_PERSISTENT
  81   in the 'flags' field for servers in $wgDBServers (or $wgLBFactoryConf).
  82
  83 === New user-facing features in 1.34 ===
  84 * Special:Mute has been added as a quick way for users to block unwanted emails
  85   from other users originating from Special:EmailUser.
  86 * (T207577) Special:NewSection has been created as a shortcut to creating a new
  87   section on a page. When linked to, its subpage is used as the target
  88   ([[Special:NewSection/Test]] redirects to creating a new section in "Test").
  89   Otherwise, it displays a basic interface to allow the end user to specify
  90   the target manually.
  91
  92 === New developer features in 1.34 ===
  93 * The ImgAuthModifyHeaders hook was added to img_auth.php to allow modification
  94   of headers in private wikis.
  95 * Language::formatTimePeriod now supports the new 'avoidhours' option to output
  96   strings like "5 days ago" instead of "5 days 13 hours ago".
  97 * (T220163) Added SpecialMuteModifyFormFields hook to allow extensions
  98   to add fields to Special:Mute.
  99 * (T100896) Skin authors can define custom OOUI themes using OOUIThemePaths.
 100   See <https://www.mediawiki.org/wiki/OOUI/Themes> for details.
 101
 102 === External library changes in 1.34 ===
 103
 104 ==== New external libraries ====
 105 * …
 106
 107 ==== Changed external libraries ====
 108 * Updated Mustache from 1.0.0 to v3.0.1.
 109 * Updated OOUI from v0.31.3 to v0.33.4.
 110 * Updated composer/semver from 1.4.2 to 1.5.0.
 111 * Updated composer/spdx-licenses from 1.4.0 to 1.5.1 (dev-only).
 112 * Updated mediawiki/codesniffer from 25.0.0 to 26.0.0 (dev-only).
 113 * Updated cssjanus/cssjanus from 1.2.1 to 1.3.0.
 114 * Updated wikimedia/at-ease from 1.2.0 to 2.0.0.
 115 * Updated wikimedia/remex-html from 2.0.1 to 2.0.3.
 116 * Updated monolog/monolog from 1.22.1 to 1.24.0 (dev-only).
 117 * Updated wikimedia/object-factory from 1.0.0 to 2.1.0.
 118 * Updated wikimedia/timestamp from 2.2.0 to 3.0.0.
 119 * Updated wikimedia/xmp-reader from 0.6.2 to 0.6.3.
 120 * Updated mediawiki/mediawiki-phan-config from 0.6.0 to 0.6.1 (dev-only).
 121 * …
 122
 123 ==== Removed external libraries ====
 124 * The jquery.async module, deprecated in 1.33, was removed.
 125 * …
 126
 127 === Bug fixes in 1.34 ===
 128 * (T222529) If a log entry or page revision is recorded in the database with an
 129   empty username, attempting to display it will log an error and return a "no
 130   username available" to the user instead of silently displaying nothing or
 131   invalid links.
 132
 133 === Action API changes in 1.34 ===
 134 * The 'recenteditcount' response property from action=query list=allusers,
 135   deprecated in 1.25, has been removed.
 136
 137 === Action API internal changes in 1.34 ===
 138 * …
 139
 140 === Languages updated in 1.34 ===
 141 MediaWiki supports over 350 languages. Many localisations are updated regularly.
 142 Below only new and removed languages are listed, as well as changes to languages
 143 because of Phabricator reports.
 144
 145 * (T152908) Added language support for N'Ko (nqo).
 146
 147 === Breaking changes in 1.34 ===
 148 * The global functions wfSuppressWarnings and wfRestoreWarnings, deprecated in
 149   1.26, have been removed. Use Wikimedia\AtEase\AtEase::suppressWarnings() and
 150   Wikimedia\AtEase\AtEase::restoreWarnings() directly.
 151 * Preferences class, deprecated in 1.31, has been removed.
 152 * The following parts of code, deprecated in 1.32, were removed in favor of
 153   built-in PHP functions:
 154   * CryptRand class
 155   * CryptRand service
 156   * Functions of the MWCryptRand class: singleton(), wasStrong() and generate().
 157 * Language::setCode, deprecated in 1.32, was removed. Use Language::factory to
 158   create a new Language object with a different language code.
 159 * MWNamespace::clearCaches() has been removed.  So has the $rebuild parameter
 160   to MWNamespace::getCanonicalNamespaces(), which was deprecated since 1.31.
 161   Instead, reset services, such as by calling $this->overrideMwServices() (if
 162   your test extends MediaWikiTestCase). Services will generally not pick up
 163   configuration changes from after they were created, so you must reset
 164   services after any configuration change. Even if your code works now, it is
 165   likely to break in future versions as more code is moved to services.
 166 * The ill-defined "DatabaseOraclePostInit" hook has been removed.
 167 * PreferencesFormLegacy and PreferencesForm classes, deprecated in 1.32, have
 168   been removed.
 169 * ObjectFactory class, deprecated in 1.31, has been removed.
 170 * HWLDFWordAccumudlator class, deprecated in 1.28, has been removed.
 171 * XMPInfo, XMPReader and XMPValidate, deprecated in 1.32, have been removed.
 172 * The RedirectSpecialPage::execute method could sometimes return a Title object.
 173   This behavior was removed, and the method now matches the parent signature
 174   (SpecialPage::execute) which is to return HTML string or void.
 175   To obtain the destination title, use RedirectSpecialPage::getRedirect.
 176 * The 'recenteditcount' response property from action API action=query
 177   list=allusers, deprecated in 1.25, has been removed.
 178 * SearchEngine::userNamespaces(), SearchEngine::namespacesAsText(),
 179   SearchEngine::create(), SearchEngine::getSearchTypes() and
 180   SearchEngine::getNearMatch(), methods deprecated in 1.27, have been removed.
 181 * FileRepo::streamFile(), deprecated in 1.26, has been removed.
 182 * User::randomPassword() method, deprecated in 1.27, have been removed.
 183 * MWNamespace::canTalk(), deprecated in 1.30, have been removed.
 184 * Parser class property $mUniqPrefix, deprecated in 1.26, has been removed.
 185 * wfArrayFilter() and wfArrayFilterByKey(), deprecated in 1.32, have been
 186   removed.
 187 * wfMakeUrlIndexes() function, deprecated in 1.33, have been removed.
 188 * Method signatures in WatchedItemQueryServiceExtension have changed from taking
 189   User objects to taking UserIdentity objects. Extensions implementing this
 190   interface need to be changed accordingly.
 191 * User::getGroupPage() and ::makeGroupLinkHTML(), deprecated in 1.29, have been
 192   removed. Use UserGroupMembership::getGroupPage and ::getLink instead.
 193 * User::makeGroupLinkWiki(), deprecated in 1.29, has been removed. Use
 194   UserGroupMembership::getLink() instead.
 195 * SavepointPostgres, deprecated in 1.31, has been removed.
 196 * OutputPage::enableSectionEditLinks(), OutputPage::sectionEditLinksEnabled(),
 197   ParserOptions::getEditSection(), ParserOptions::setEditSection(), and
 198   ParserOutput::getEditSectionTokens, ::getTOCEnabled, ::setEditSectionTokens,
 199   and ::setTOCEnabled, deprecated in 1.31, have been removed.
 200 * EditPage::safeUnicodeInput() and ::safeUnicodeOutput(), deprecated in 1.30,
 201   have been removed.
 202 * Four methods in OutputPage, deprecated in 1.32, have been removed. You should
 203   use OutputPage::showFatalError or throw a FatalError instead. The methods are
 204   ::showFileCopyError(), ::showFileRenameError(), ::showFileDeleteError(), and
 205   ::showFileNotFoundError().
 206 * ApiBase::truncateArray(), deprecated in 1.32, has been removed.
 207 * IcuCollation::getICUVersion(), deprecated in 1.32, has been removed. Use PHP's
 208   INTL_ICU_VERSION constant directly.
 209 * HTMLForm::setSubmitProgressive(), deprecated in 1.32, has been removed.
 210 * ResourceLoaderStartUpModules::getStartupModules() and ::getLegacyModules(),
 211   both deprecated in 1.32, have been removed.
 212 * BaseTemplate::msgHtml() and QuickTemplate::msgHtml(), deprecated in 1.32, have
 213   been removed. Use ->msg() or ->getMsg() instead.
 214 * WatchAction::getUnwatchToken(), deprecated in 1.32, has been removed. Instead,
 215   use WatchAction::getWatchToken() with action 'unwatch' directly.
 216 * Language::initEncoding(), ::recodeForEdit(), and recodeInput(), deprecated in
 217   1.28, have been removed.
 218 * PageArchive::getTextFromRow(), ::listAllPages(), and ::getLastRevisionText(),
 219   deprecated in 1.32, have been removed.
 220 * OutputPage::getModuleScripts(), ParserOutput::getModuleScripts(), deprecated
 221   in 1.33, have been removed.
 222 * User::getPasswordValidity(), deprecated in 1.33, has been removed.
 223 * ApiQueryBase::prepareUrlQuerySearchString(), deprecated in 1.33, has been
 224   removed.
 225 * ChangeTags::purgeTagUsageCache(), deprecated in 1.33, has been removed.
 226 * JobQueueGroup::pushLazyJobs(), deprecated in 1.33, has been removed.
 227 * MediaWikiTestCase::stashMwGlobals(), deprecated in 1.32, has been removed.
 228 * SearchEngine::transformSearchTerm(), deprecated in 1.32, has been removed.
 229 * The Block typehint only refers to blocks stored in the database. It should be
 230   updated to AbstractBlock in cases where any type of block could be expected.
 231 * FileRepoStatus, deprecated in 1.25, has been removed.
 232 * The LegacyHookPreAuthenticationProvider class, deprecated since its creation
 233   in 1.27, has been removed.
 234 * IP::isValidBlock(), deprecated in 1.30, has been removed.
 235 * WikiPage::prepareContentForEdit now doesn't accept an integer for $revision,
 236   was deprecated in 1.25.
 237 * The jquery.byteLength module, deprecated in 1.31, was removed.
 238   Use the mediawiki.String module instead.
 239 * mw.language.specialCharacters, deprecated in 1.33, has been removed.
 240   Use require( 'mediawiki.language.specialCharacters' ) instead.
 241 * EditPage::submit(), deprecated in 1.29, has been removed. Use $this->edit()
 242   directly.
 243 * HTMLForm::getErrors(), deprecated in 1.28, has been removed. Use
 244   getErrorsOrWarnings() instead.
 245 * SpecialPage::getTitle(), deprecated in 1.23, has been removed. Use
 246   SpecialPage::getPageTitle() instead.
 247 * jquery.ui.effect-bounce, jquery.ui.effect-explode, jquery.ui.effect-fold
 248   jquery.ui.effect-pulsate, jquery.ui.effect-slide, jquery.ui.effect-transfer,
 249   which are no longer used, have now been removed.
 250 * SpecialEmailUser::validateTarget(), ::getTarget() without a sender/user
 251   specified, deprecated in 1.30, have been removed.
 252 * BufferingStatsdDataFactory::getBuffer(), deprecated in 1.30, has been removed.
 253 * The constant DB_SLAVE, deprecated in 1.28, has been removed. Use DB_REPLICA.
 254 * The constants NS_IMAGE and NS_IMAGE_TALK, deprecated in 1.14, have been
 255   removed. Use NS_FILE and NS_FILE_TALK respectively.
 256 * Replacer, DoubleReplacer, HashtableReplacer and RegexlikeReplacer
 257   (deprecated in 1.32) have been removed. Closures should be used instead.
 258 * OutputPage::addWikiText(), ::addWikiTextWithTitle(), ::addWikiTextTitleTidy(),
 259   ::addWikiTextTidy(), ::addWikiTextTitle(), deprecated in 1.32, have been
 260   removed.
 261 * The $wgUseKeyHeader configuration option and the OutputPage::getKeyHeader()
 262   method, deprecated in 1.32, have been removed.
 263 * WebInstallerOutput::addWikiText(), deprecated in 1.32, has been removed.
 264 * Parser::fetchFile(), deprecated in 1.32, has been removed. Use the method
 265   Parser::fetchFileAndTitle() instead.
 266 * The global function wfBCP47, deprecated in 1.31, has been removed.
 267 * wfCountDown() function, deprecated in 1.31, has been removed. Use
 268   \Maintenance::countDown() method instead.
 269 * OutputPage::wrapWikiMsg() no longer accepts an options parameter. This was
 270   deprecated since 1.20.
 271 * Skin::outputPage() no longer accepts a context. This was deprecated in 1.20.
 272 * Linker::link() no longer accepts a string for the query array, as was
 273   deprecated in 1.20.
 274 * PrefixSearch::titleSearch(), deprecated in 1.23, has been removed. Use the
 275   SearchEngine::defaultPrefixSearch or ::completionSearch() methods instead.
 276 * The UserRights hook, deprecated in 1.26, has been removed. Instead, use the
 277   UserGroupsChanged hook.
 278 * Skin::getDefaultInstance(), deprecated in 1.27, has been removed. Get the
 279   instance from MediaWikiServices instead.
 280 * The UserLoadFromSession hook, deprecated in 1.27, has been removed.
 281 * The wfResetSessionID global function, deprecated in 1.27, has been removed.
 282   Use MediaWiki\Session\SessionManager instead.
 283 * The wfGetLBFactory global function, deprecated in 1.27, has been removed.
 284   Use MediaWikiServices::getInstance()->getDBLoadBalancerFactory().
 285 * The internal method OutputPage->addScriptFile() will no longer silently drop
 286   calls that use an invalid path (i.e., something other than an absolute path,
 287   protocol-relative URL, or full scheme URL), and will instead pass them to the
 288   client where they will likely 404. This usage was deprecated in 1.24.
 289 * Database::reportConnectionError, deprecated in 1.32, has been removed.
 290 * APIEditBeforeSave hook, deprecated in 1.28, has been removed. Please see
 291   EditFilterMergedContent hook for an alternative way to use this feature.
 292 * API module methods getDescription(), getParamDescription(), & getExamples(),
 293   all deprecated in 1.25 and ignored, have been removed.
 294 * The API module method getDescriptionMessage(), deprecated in 1.30, has been
 295   removed.
 296 * The JavaScript global variable wgLoadScript has been removed. Use
 297   mw.util.wikiScript( 'load' ) instead.
 298 * ResourceLoader no longer creates the 'mw.legacy' placeholder object. It has
 299   been unused since 1.16 and was deprecated in 1.22. To deprecate a property
 300   in JavaScript, use mw.log.deprecate() instead.
 301 * The 'user.groups' module, deprecated in 1.28, was removed.
 302   Use the 'user' module instead.
 303 * The ResourceLoaderContext::expandModuleNames method, deprecated in 1.33, was
 304   removed. Use ResourceLoader::expandModuleNames instead.
 305 * The ability to override User::$mRights has been removed. Use
 306   PermissionManager::addTemporaryUserRights() instead.
 307 * Previously, when iterating ResultWrapper with foreach() or a similar
 308   construct, the range of the index was 1..numRows. This has been fixed to be
 309   0..(numRows-1).
 310 * The ChangePasswordForm hook, deprecated in 1.27, has been removed. Use the
 311   AuthChangeFormFields hook or security levels instead.
 312 * WikiMap::getWikiIdFromDomain(), deprecated in 1.33, has been removed.
 313   Use WikiMap::getWikiIdFromDbDomain() instead.
 314 * The config variables $wgHtml5, $wgJsMimeType, and $wgXhtmlDefaultNamespace,
 315   which were deprecated and ignored by core since 1.22, are no longer set to any
 316   value, and SkinTemplate no longer emits a 'jsmimetype' key. Any extensions not
 317   updated since 2013 to cope with this deprecation may now break.
 318 * (T222637) Passing ResourceLoaderModule objects to ResourceLoader::register()
 319   or $wgResourceModules is no longer supported.
 320   Use the 'class' or 'factory' option of the array format instead.
 321 * The parameter $lang of the functions generateTOC and tocList in Linker and
 322   DummyLinker must be in type Language when present. Other types are
 323   deprecated since 1.33.
 324 * The static properties mw.Api.errors and mw.Api.warnings, deprecated in 1.29,
 325   have been removed.
 326 * ParserOption::getSpeculativeRevIdCallback(), deprecated in 1.28, has been
 327   removed.
 328 * The UploadVerification hook, deprecated in 1.28, has been removed. Instead,
 329   use the UploadVerifyFile hook.
 330 * UploadBase:: and UploadFromChunks::stashFileGetKey() and stashSession(),
 331   deprecated in 1.28, have been removed. Instead, please use the getFileKey()
 332   method on the response from doStashFile().
 333 * LBFactory::setDomainPrefix() and LoadBalancer::setDomainPrefix(), deprecated
 334   in 1.33, have been removed. Use setLocalDomainPrefix() instead.
 335 * IDatabase::implicitGroupby(), deprecated in 1.30, has been removed.
 336 * IDatabase::doneWrites(), deprecated in 1.31, has been removed.
 337   Use IDatabase::lastDoneWrites() instead.
 338 * Database::reportConnectionError(), deprecated in 1.32, has been removed.
 339 * LoadBalancer::laggedSlaveUsed(), deprecated in 1.28, has been removed.
 340   Use LoadBalancer::laggedReplicaUsed() instead.
 341 * Database::getProperty(), deprecated in 1.28, has been removed.
 342 * IDatabase::getWikiId(), deprecated in 1.30, has been removed.
 343   Use IDatabase::getDomainID() instead.
 344 * (T191231) Support for using Oracle or MSSQL as database backends has been
 345   dropped.
 346 * MessageCache::destroyInstance() has been removed. Instead, call
 347   MediaWikiTestCase::resetServices().
 348 * SearchResult protected field $searchEngine is removed and no longer
 349   initialized after calling SearchResult::initFromTitle().
 350 * …
 351
 352 === Deprecations in 1.34 ===
 353 * The MWNamespace class is deprecated. Use NamespaceInfo.
 354 * ExtensionRegistry->load() is deprecated, as it breaks dependency checking.
 355   Instead, use ->queue().
 356 * User::isBlocked() is deprecated since it does not tell you if the user is
 357   blocked from editing a particular page. Use User::getBlock() or
 358   PermissionManager::isBlockedFrom() or PermissionManager::userCan() instead.
 359 * User::isLocallyBlockedProxy and User::inDnsBlacklist are deprecated and moved
 360   to the BlockManager as private helper methods.
 361 * User::isDnsBlacklisted is deprecated. Use BlockManager::isDnsBlacklisted
 362   instead.
 363 * The Config argument to ChangesListSpecialPage::checkStructuredFilterUiEnabled
 364   is deprecated. Pass only the User argument.
 365 * WatchedItem::getUser is deprecated. Use getUserIdentity.
 366 * Passing a Title as the first parameter to the getTimestampById method of
 367   RevisionStore is deprecated. Omit it, passing only the remaining parameters.
 368 * Title::getPreviousRevisionId and Title::getNextRevisionId are deprecated. Use
 369   RevisionLookup::getPreviousRevision and RevisionLookup::getNextRevision.
 370 * The Title parameter to RevisionLookup::getPreviousRevision and
 371   RevisionLookup::getNextRevision is deprecated and should be omitted.
 372 * MWHttpRequest::factory is deprecated. Use HttpRequestFactory.
 373 * The Http class is deprecated. For the request, get, and post methods, use
 374   HttpRequestFactory. For isValidURI, use MWHttpRequest::isValidURI.  For
 375   getProxy, use (string)$wgHTTPProxy. For createMultiClient, construct a
 376   MultiHttpClient directly.
 377 * Http::$httpEngine is deprecated and has no replacement. The default 'guzzle'
 378   engine will eventually be made the only engine for HTTP requests.
 379 * RepoGroup::singleton(), RepoGroup::destroySingleton(),
 380   RepoGroup::setSingleton(), wfFindFile(), and wfLocalFile() are all
 381   deprecated. Use MediaWikiServices instead.
 382 * The getSubjectPage, getTalkPage, and getOtherPage of Title are deprecated.
 383   Use NamespaceInfo's getSubjectPage, getTalkPage, and getAssociatedPage.
 384 * MWMessagePack class, no longer used, has been deprecated in 1.34.
 385 * The Block class is separated into DatabaseBlock (for blocks stored in the
 386   database), and SystemBlock (for temporary blocks created by the system).
 387   SystemBlock should be used when creating any temporary blocks. Block is
 388   a deprecated alias for DatabaseBlock.
 389 * Parser::$mConf is deprecated. It will be removed entirely in a later version.
 390   Some context can be found at T224165.
 391 * Constructing Parser directly is deprecated. Obtain one from ParserFactory.
 392 * Title::moveSubpages is deprecated. Use MovePage::moveSubpages or
 393   MovePage::moveSubpagesIfAllowed.
 394 * The MWNamespace class is deprecated. Use MediaWikiServices::getNamespaceInfo.
 395 * (T62260) Hard deprecate Language::getExtraUserToggles() method.
 396 * Language::viewPrevNext function is deprecated, use
 397   PrevNextNavigationRenderer::buildPrevNextNavigation instead
 398 * User::trackBlockWithCookie and DatabaseBlock::clearCookie are deprecated. Use
 399   BlockManager::trackBlockWithCookie and BlockManager::clearCookie instead.
 400 * DatabaseBlock::setCookie, DatabaseBlock::getCookieValue,
 401   DatabaseBlock::getIdFromCookieValue and AbstractBlock::shouldTrackWithCookie
 402   are moved to internal helper methods for BlockManager::trackBlockWithCookie.
 403 * ResourceLoaderContext::getConfig and ResourceLoaderContext::getLogger have
 404   been deprecated. Inside ResourceLoaderModule subclasses, use the local methods
 405   instead. Elsewhere, use the methods from the ResourceLoader class.
 406 * The Preprocessor_DOM implementation has been deprecated.  It will be
 407   removed in a future release.  Use the Preprocessor_Hash implementation
 408   instead.
 409 * Sanitizer::attributeWhitelist() and Sanitizer::setupAttributeWhitelist()
 410   have been deprecated; they will be made private in the future.
 411 * SearchResult::termMatches() method is deprecated. It was unreliable because
 412   only populated by few search engine implementations. Use
 413   SqlSearchResult::getTermMatches() if really needed.
 414 * SearchResult::getTextSnippet( $terms ) the $terms param is being deprecated
 415   and should no longer be passed. Search engine implemenations should be
 416   responsible for carrying relevant information needed for highlighting with
 417   their own SearchResultSet/SearchResult sub-classes.
 418 * SearchResultSet::free() method is deprecated.
 419 * SearchEngine::$searchTerms protected field is deprecated. Moved to
 420   SearchDatabase.
 421 * The use of the $terms param in the ShowSearchHit and ShowSearchHitTitle
 422   hooks is highly discouraged as it's only populated by SearchDatabase search
 423   engines.
 424 * Skin::escapeSearchLink() is deprecated. Use Skin::getSearchLink() or the skin
 425   template option 'searchaction' instead.
 426 * LoadBalancer::haveIndex() and LoadBalancer::isNonZeroLoad() have
 427   been deprecated.
 428 * FileBackend::getWikiId() has been deprecated.
 429   Use FileBackend::getDomainId() instead.
 430 * User::getRights() and User::$mRights have been deprecated. Use
 431   PermissionManager::getUserPermissions() instead.
 432 * The LocalisationCacheRecache hook no longer allows purging of message blobs
 433   to be prevented. Modifying the $purgeBlobs parameter now has no effect.
 434 * SVGMetadataExtractor::getMetadata has been deprecated. Instead, you should
 435   use SVGReader->getMetadata() directly.
 436 * The following public properties on AbstractBlock are deprecated: $mReason,
 437   $mTimestamp, $mExpiry, $mHideName. Use the getters/setters instead.
 438 * The following public properties on DatabaseBlock are deprecated: $mAuto,
 439   $mParentBlockId. To check for an autoblock use DatabaseBlock::getType; to
 440   check for the parent ID, use DatabaseBlock::getParentBlockId.
 441 * SearchEngine::userHighlightPrefs() is deprecated, simply stop passing
 442   $contextlines and $contextchars to the SearchHighlighter methods, they will
 443   use proper defaults defined in SearchHighlighter::DEFAULT_CONTEXT_LINES and
 444   DEFAULT_CONTEXT_CHARS.
 445 * SearchUpdate constructor: passing a string as the title param and or a boolean
 446   or a string as the content will produce a deprecation warning.
 447 * SearchEngine::getTextFromContent() is deprecated, use getTextForSearchIndex()
 448   directly from the Content object.
 449 * SearchEngine::textAlreadyUpdatedForIndex() is deprecated, given the
 450   deprecation above this method is no longer needed/called and should not be
 451   implemented by SearchEngine implementation.
 452 * IDatabase::bufferResults() has been deprecated. Use query batching instead.
 453 * MessageCache::singleton() is deprecated. Use
 454   MediaWikiServices::getMessageCache().
 455 * Constructing MovePage directly is deprecated. Use MovePageFactory.
 456 * TempFSFile::factory() has been deprecated. Use TempFSFileFactory instead.
 457 * wfIsBadImage() is deprecated. Use the BadFileLookup service instead.
 458
 459 === Other changes in 1.34 ===
 460 * …
 461
 462 == Compatibility ==
 463 MediaWiki 1.34 requires PHP 7.0.13 or later. Although HHVM 3.18.5 or later is
 464 supported, it is generally advised to use PHP 7.0.13 or later for long term
 465 support.
 466
 467 MySQL/MariaDB is the recommended DBMS. PostgreSQL or SQLite can also be used,
 468 but support for them is somewhat less mature.
 469
 470 The supported versions are:
 471
 472 * MySQL 5.5.8 or later
 473 * PostgreSQL 9.2 or later
 474 * SQLite 3.8.0 or later
 475
 476 == Online documentation ==
 477 Documentation for both end-users and site administrators is available on
 478 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 479 for pages that explicitly state that their contents are in the public domain):
 480
 481        https://www.mediawiki.org/wiki/Special:MyLanguage/Documentation
 482
 483 == Mailing list ==
 484 A mailing list is available for MediaWiki user support and discussion:
 485
 486        https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 487
 488 A low-traffic announcements-only list is also available:
 489
 490        https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 491
 492 It's highly recommended that you sign up for one of these lists if you're
 493 going to run a public MediaWiki, so you can be notified of security fixes.
 494
 495 == IRC help ==
 496 There's usually someone online in #mediawiki on irc.freenode.net.