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