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 In an effort to enforce best practices for passwords, MediaWiki will now warn
  30 users, and suggest that they change their password, if it is in the list of
  31 100,000 commonly used passwords that are considered bad passwords. If you want
  32 to disable this for your users, please add the following to your local settings:
  33
  34 $wgPasswordPolicy['policies']['default']['PasswordNotInLargeBlacklist'] = false;
  35
  36 ==== New configuration ====
  37 * $wgAllowExternalReqID (T201409) - This configuration setting controls whether
  38   Mediawiki accepts the request ID set by the incoming request via the
  39   `X-Request-Id` header. If set to `true`, that value will be used throughout
  40   the code as the request identificator. Otherwise, the sent header will be
  41   ignored and the request ID will either be taken from Apache's mod_unique
  42   module or will be generated by Mediawiki itself (depending on the set-up).
  43 * $wgEnableSpecialMute (T218265) - This configuration controls whether
  44   Special:Mute is available and whether to include a link to it on emails
  45   originating from Special:Email.
  46 * editmyuserjsredirect user right – users without this right now cannot edit JS
  47   redirects in their userspace unless the target of the redirect is also in
  48   their userspace. By default, this right is given to everyone.
  49 * (T226733) Add rate limiter to Special:ConfirmEmail.
  50
  51 ==== Changed configuration ====
  52 * $wgUseCdn, $wgCdnServers, $wgCdnServersNoPurge, and $wgCdnMaxAge – These four
  53   CDN-related config variables have been renamed from being specific to Squid –
  54   they were previously $wgUseSquid, $wgSquidServers, $wgSquidServersNoPurge, and
  55   $wgSquidMaxage respectively. This aligns them with the related existing
  56   variable $wgCdnMaxageLagged. The previous configuration variable names are
  57   deprecated, but will be used as the fall back if they are still set.
  58   Note that wgSquidPurgeUseHostHeader has not been renamed, as it is deprecated.
  59 * (T27707) File type checks for image uploads have been relaxed to allow files
  60   containing some HTML markup in metadata. As a result, the $wgAllowTitlesInSVG
  61   setting is no longer applied and is now always true. Note that MSIE 7 may
  62   still be able to misinterpret certain malformed PNG files as HTML.
  63 * Introduced $wgVerifyMimeTypeIE to allow disabling the MSIE 6/7 file type
  64   detection heuristic on upload, which is more conservative than the checks
  65   that were changed above.
  66 * $wgSkipSkin — Setting this instead of $wgSkipSkins, deprecated in 1.23, is now
  67   hard-deprecated.
  68 * $wgLocalInterwiki — Setting this instead of $wgLocalInterwikis, deprecated in
  69   1.23, is now hard-deprecated.
  70 * $wgProfileOnly — Setting this, deprecated in 1.23, is now hard-deprecated.
  71   Instead, set the log file in $wgDebugLogGroups['profileoutput'].
  72 * $wgProxyList — Setting this to an array with IP addresses in the array keys,
  73   which was deprecated in 1.30, no longer works. Instead, $wgProxyList should be
  74   an array with IP addresses as the values, or a string path to a file
  75   containing one IP address per line.
  76 * $wgCookieSetOnAutoblock and $wgCookieSetOnIpBlock are now enabled by default.
  77 * …
  78
  79 ==== Removed configuration ====
  80 * $wgWikiDiff2MovedParagraphDetectionCutoff — If you still want a custom change
  81   size threshold, please specify in php.ini, using the configuration variable
  82   wikidiff2.moved_paragraph_detection_cutoff.
  83 * $wgUseESI - This experimental setting, deprecated in 1.33, is now removed.
  84 * $wgDebugPrintHttpHeaders - The default of including HTTP headers in the
  85   debug log channel is no longer configurable. The debug log itself remains
  86   configurable via $wgDebugLogFile.
  87 * $wgMsgCacheExpiry - The MessageCache uses 24 hours as the expiry for values
  88   stored in WANObjectCache. This is no longer configurable.
  89 * $wgPasswordSalt – This setting, used for migrating exceptionally old, insecure
  90   password setups and deprecated since 1.24, is now removed.
  91 * $wgDBOracleDRCP - If you must use persistent connections, set DBO_PERSISTENT
  92   in the 'flags' field for servers in $wgDBServers (or $wgLBFactoryConf).
  93 * $wgMemCachedDebug - Set the cache "debug" field in $wgObjectCaches instead.
  94 * $wgActorTableSchemaMigrationStage has been removed. Extension code for
  95   MediaWiki 1.31+ finding it unset should treat it as being SCHEMA_COMPAT_NEW.
  96
  97 === New user-facing features in 1.34 ===
  98 * Special:Mute has been added as a quick way for users to block unwanted emails
  99   from other users originating from Special:EmailUser.
 100 * (T207577) Special:NewSection has been created as a shortcut to creating a new
 101   section on a page. When linked to, its subpage is used as the target
 102   ([[Special:NewSection/Test]] redirects to creating a new section in "Test").
 103   Otherwise, it displays a basic interface to allow the end user to specify
 104   the target manually.
 105 * (T220447) Special:Contributions/newbies has been removed for performance and
 106   usefulness reasons. Use Special:RecentChanges?userExpLevel=newcomer instead.
 107 * Special:NewFiles/newbies has been removed for performance and usefulness
 108   reasons. Use Special:RecentChanges?userExpLevel=newcomer&namespace=6 instead.
 109
 110 === New developer features in 1.34 ===
 111 * The ImgAuthModifyHeaders hook was added to img_auth.php to allow modification
 112   of headers in private wikis.
 113 * Language::formatTimePeriod now supports the new 'avoidhours' option to output
 114   strings like "5 days ago" instead of "5 days 13 hours ago".
 115 * (T220163) Added SpecialMuteModifyFormFields hook to allow extensions
 116   to add fields to Special:Mute.
 117 * (T100896) Skin authors can define custom OOUI themes using OOUIThemePaths.
 118   See <https://www.mediawiki.org/wiki/OOUI/Themes> for details.
 119 * (T229035) The GetUserBlock hook was added. Use this instead of
 120   GetBlockedStatus.
 121 * ObjectFactory is available as a service. When used as a service, the object
 122   specs can now specify needed DI services.
 123 * (T222388) Special pages can now be specified as an ObjectFactory spec,
 124   allowing the construction of special pages that require services to be
 125   injected in their constructor.
 126
 127 === External library changes in 1.34 ===
 128
 129 ==== New external libraries ====
 130 * …
 131
 132 ==== Changed external libraries ====
 133 * Updated Mustache from 1.0.0 to v3.0.1.
 134 * Updated OOUI from v0.31.3 to v0.34.0.
 135 * Updated OOjs from v2.2.2 to v3.0.0.
 136 * Updated composer/semver from 1.4.2 to 1.5.0.
 137 * Updated composer/spdx-licenses from 1.4.0 to 1.5.1 (dev-only).
 138 * Updated mediawiki/codesniffer from 25.0.0 to 26.0.0 (dev-only).
 139 * Updated cssjanus/cssjanus from 1.2.1 to 1.3.0.
 140 * Updated wikimedia/at-ease from 1.2.0 to 2.0.0.
 141 * Updated wikimedia/remex-html from 2.0.1 to 2.0.3.
 142 * Updated monolog/monolog from 1.22.1 to 1.24.0 (dev-only).
 143 * Updated wikimedia/object-factory from 1.0.0 to 2.1.0.
 144 * Updated wikimedia/timestamp from 2.2.0 to 3.0.0.
 145 * Updated wikimedia/xmp-reader from 0.6.2 to 0.6.3.
 146 * Updated mediawiki/mediawiki-phan-config from 0.6.0 to 0.6.1 (dev-only).
 147 * …
 148
 149 ==== Removed external libraries ====
 150 * The jquery.async module, deprecated in 1.33, was removed.
 151 * …
 152
 153 === Bug fixes in 1.34 ===
 154 * (T222529) If a log entry or page revision is recorded in the database with an
 155   empty username, attempting to display it will log an error and return a "no
 156   username available" to the user instead of silently displaying nothing or
 157   invalid links.
 158
 159 === Action API changes in 1.34 ===
 160 * The 'recenteditcount' response property from action=query list=allusers,
 161   deprecated in 1.25, has been removed.
 162
 163 === Action API internal changes in 1.34 ===
 164 * …
 165
 166 === Languages updated in 1.34 ===
 167 MediaWiki supports over 350 languages. Many localisations are updated regularly.
 168 Below only new and removed languages are listed, as well as changes to languages
 169 because of Phabricator reports.
 170
 171 * (T152908) Added language support for N'Ko (nqo).
 172
 173 === Breaking changes in 1.34 ===
 174 * The global functions wfSuppressWarnings and wfRestoreWarnings, deprecated in
 175   1.26, have been removed. Use Wikimedia\AtEase\AtEase::suppressWarnings() and
 176   Wikimedia\AtEase\AtEase::restoreWarnings() directly.
 177 * Preferences class, deprecated in 1.31, has been removed.
 178 * The following parts of code, deprecated in 1.32, were removed in favor of
 179   built-in PHP functions:
 180   * CryptRand class
 181   * CryptRand service
 182   * Functions of the MWCryptRand class: singleton(), wasStrong() and generate().
 183 * Language::setCode, deprecated in 1.32, was removed. Use Language::factory to
 184   create a new Language object with a different language code.
 185 * MWNamespace::clearCaches() has been removed.  So has the $rebuild parameter
 186   to MWNamespace::getCanonicalNamespaces(), which was deprecated since 1.31.
 187   Instead, reset services, such as by calling $this->overrideMwServices() (if
 188   your test extends MediaWikiTestCase). Services will generally not pick up
 189   configuration changes from after they were created, so you must reset
 190   services after any configuration change. Even if your code works now, it is
 191   likely to break in future versions as more code is moved to services.
 192 * The ill-defined "DatabaseOraclePostInit" hook has been removed.
 193 * PreferencesFormLegacy and PreferencesForm classes, deprecated in 1.32, have
 194   been removed.
 195 * ObjectFactory class, deprecated in 1.31, has been removed.
 196 * HWLDFWordAccumudlator class, deprecated in 1.28, has been removed.
 197 * XMPInfo, XMPReader and XMPValidate, deprecated in 1.32, have been removed.
 198 * The RedirectSpecialPage::execute method could sometimes return a Title object.
 199   This behavior was removed, and the method now matches the parent signature
 200   (SpecialPage::execute) which is to return HTML string or void.
 201   To obtain the destination title, use RedirectSpecialPage::getRedirect.
 202 * The 'recenteditcount' response property from action API action=query
 203   list=allusers, deprecated in 1.25, has been removed.
 204 * SearchEngine::userNamespaces(), SearchEngine::namespacesAsText(),
 205   SearchEngine::create(), SearchEngine::getSearchTypes() and
 206   SearchEngine::getNearMatch(), methods deprecated in 1.27, have been removed.
 207 * FileRepo::streamFile(), deprecated in 1.26, has been removed.
 208 * User::randomPassword() method, deprecated in 1.27, have been removed.
 209 * MWNamespace::canTalk(), deprecated in 1.30, have been removed.
 210 * Parser class property $mUniqPrefix, deprecated in 1.26, has been removed.
 211 * wfArrayFilter() and wfArrayFilterByKey(), deprecated in 1.32, have been
 212   removed.
 213 * wfMakeUrlIndexes() function, deprecated in 1.33, have been removed.
 214 * Method signatures in WatchedItemQueryServiceExtension have changed from taking
 215   User objects to taking UserIdentity objects. Extensions implementing this
 216   interface need to be changed accordingly.
 217 * User::getGroupPage() and ::makeGroupLinkHTML(), deprecated in 1.29, have been
 218   removed. Use UserGroupMembership::getGroupPage and ::getLink instead.
 219 * User::makeGroupLinkWiki(), deprecated in 1.29, has been removed. Use
 220   UserGroupMembership::getLink() instead.
 221 * SavepointPostgres, deprecated in 1.31, has been removed.
 222 * OutputPage::enableSectionEditLinks(), OutputPage::sectionEditLinksEnabled(),
 223   ParserOptions::getEditSection(), ParserOptions::setEditSection(), and
 224   ParserOutput::getEditSectionTokens, ::getTOCEnabled, ::setEditSectionTokens,
 225   and ::setTOCEnabled, deprecated in 1.31, have been removed.
 226 * EditPage::safeUnicodeInput() and ::safeUnicodeOutput(), deprecated in 1.30,
 227   have been removed.
 228 * Four methods in OutputPage, deprecated in 1.32, have been removed. You should
 229   use OutputPage::showFatalError or throw a FatalError instead. The methods are
 230   ::showFileCopyError(), ::showFileRenameError(), ::showFileDeleteError(), and
 231   ::showFileNotFoundError().
 232 * ApiBase::truncateArray(), deprecated in 1.32, has been removed.
 233 * IcuCollation::getICUVersion(), deprecated in 1.32, has been removed. Use PHP's
 234   INTL_ICU_VERSION constant directly.
 235 * HTMLForm::setSubmitProgressive(), deprecated in 1.32, has been removed.
 236 * ResourceLoaderStartUpModules::getStartupModules() and ::getLegacyModules(),
 237   both deprecated in 1.32, have been removed.
 238 * BaseTemplate::msgHtml() and QuickTemplate::msgHtml(), deprecated in 1.32, have
 239   been removed. Use ->msg() or ->getMsg() instead.
 240 * WatchAction::getUnwatchToken(), deprecated in 1.32, has been removed. Instead,
 241   use WatchAction::getWatchToken() with action 'unwatch' directly.
 242 * Language::initEncoding(), ::recodeForEdit(), and recodeInput(), deprecated in
 243   1.28, have been removed.
 244 * PageArchive::getTextFromRow(), ::listAllPages(), and ::getLastRevisionText(),
 245   deprecated in 1.32, have been removed.
 246 * OutputPage::getModuleScripts(), ParserOutput::getModuleScripts(), deprecated
 247   in 1.33, have been removed.
 248 * User::getPasswordValidity(), deprecated in 1.33, has been removed.
 249 * ApiQueryBase::prepareUrlQuerySearchString(), deprecated in 1.33, has been
 250   removed.
 251 * ChangeTags::purgeTagUsageCache(), deprecated in 1.33, has been removed.
 252 * JobQueueGroup::pushLazyJobs(), deprecated in 1.33, has been removed.
 253 * MediaWikiTestCase::stashMwGlobals(), deprecated in 1.32, has been removed.
 254 * SearchEngine::transformSearchTerm(), deprecated in 1.32, has been removed.
 255 * The Block typehint only refers to blocks stored in the database. It should be
 256   updated to AbstractBlock in cases where any type of block could be expected.
 257 * FileRepoStatus, deprecated in 1.25, has been removed.
 258 * The LegacyHookPreAuthenticationProvider class, deprecated since its creation
 259   in 1.27, has been removed.
 260 * IP::isValidBlock(), deprecated in 1.30, has been removed.
 261 * WikiPage::prepareContentForEdit now doesn't accept an integer for $revision,
 262   was deprecated in 1.25.
 263 * The jquery.byteLength module, deprecated in 1.31, was removed.
 264   Use the mediawiki.String module instead.
 265 * mw.language.specialCharacters, deprecated in 1.33, has been removed.
 266   Use require( 'mediawiki.language.specialCharacters' ) instead.
 267 * EditPage::submit(), deprecated in 1.29, has been removed. Use $this->edit()
 268   directly.
 269 * HTMLForm::getErrors(), deprecated in 1.28, has been removed. Use
 270   getErrorsOrWarnings() instead.
 271 * SpecialPage::getTitle(), deprecated in 1.23, has been removed. Use
 272   SpecialPage::getPageTitle() instead.
 273 * jquery.ui.effect-bounce, jquery.ui.effect-explode, jquery.ui.effect-fold
 274   jquery.ui.effect-pulsate, jquery.ui.effect-slide, jquery.ui.effect-transfer,
 275   which are no longer used, have now been removed.
 276 * SpecialEmailUser::validateTarget(), ::getTarget() without a sender/user
 277   specified, deprecated in 1.30, have been removed.
 278 * BufferingStatsdDataFactory::getBuffer(), deprecated in 1.30, has been removed.
 279 * The constant DB_SLAVE, deprecated in 1.28, has been removed. Use DB_REPLICA.
 280 * The constants NS_IMAGE and NS_IMAGE_TALK, deprecated in 1.14, have been
 281   removed. Use NS_FILE and NS_FILE_TALK respectively.
 282 * Replacer, DoubleReplacer, HashtableReplacer and RegexlikeReplacer
 283   (deprecated in 1.32) have been removed. Closures should be used instead.
 284 * OutputPage::addWikiText(), ::addWikiTextWithTitle(), ::addWikiTextTitleTidy(),
 285   ::addWikiTextTidy(), ::addWikiTextTitle(), deprecated in 1.32, have been
 286   removed.
 287 * The $wgUseKeyHeader configuration option and the OutputPage::getKeyHeader()
 288   method, deprecated in 1.32, have been removed.
 289 * WebInstallerOutput::addWikiText(), deprecated in 1.32, has been removed.
 290 * Parser::fetchFile(), deprecated in 1.32, has been removed. Use the method
 291   Parser::fetchFileAndTitle() instead.
 292 * The global function wfBCP47, deprecated in 1.31, has been removed.
 293 * wfCountDown() function, deprecated in 1.31, has been removed. Use
 294   \Maintenance::countDown() method instead.
 295 * OutputPage::wrapWikiMsg() no longer accepts an options parameter. This was
 296   deprecated since 1.20.
 297 * Skin::outputPage() no longer accepts a context. This was deprecated in 1.20.
 298 * Linker::link() no longer accepts a string for the query array, as was
 299   deprecated in 1.20.
 300 * PrefixSearch::titleSearch(), deprecated in 1.23, has been removed. Use the
 301   SearchEngine::defaultPrefixSearch or ::completionSearch() methods instead.
 302 * The UserRights hook, deprecated in 1.26, has been removed. Instead, use the
 303   UserGroupsChanged hook.
 304 * Skin::getDefaultInstance(), deprecated in 1.27, has been removed. Get the
 305   instance from MediaWikiServices instead.
 306 * The UserLoadFromSession hook, deprecated in 1.27, has been removed.
 307 * The wfResetSessionID global function, deprecated in 1.27, has been removed.
 308   Use MediaWiki\Session\SessionManager instead.
 309 * The wfGetLBFactory global function, deprecated in 1.27, has been removed.
 310   Use MediaWikiServices::getInstance()->getDBLoadBalancerFactory().
 311 * The internal method OutputPage->addScriptFile() will no longer silently drop
 312   calls that use an invalid path (i.e., something other than an absolute path,
 313   protocol-relative URL, or full scheme URL), and will instead pass them to the
 314   client where they will likely 404. This usage was deprecated in 1.24.
 315 * Database::reportConnectionError, deprecated in 1.32, has been removed.
 316 * APIEditBeforeSave hook, deprecated in 1.28, has been removed. Please see
 317   EditFilterMergedContent hook for an alternative way to use this feature.
 318 * API module methods getDescription(), getParamDescription(), & getExamples(),
 319   all deprecated in 1.25 and ignored, have been removed.
 320 * The API module method getDescriptionMessage(), deprecated in 1.30, has been
 321   removed.
 322 * The JavaScript global variable wgLoadScript has been removed. Use
 323   mw.util.wikiScript( 'load' ) instead.
 324 * ResourceLoader no longer creates the 'mw.legacy' placeholder object. It has
 325   been unused since 1.16 and was deprecated in 1.22. To deprecate a property
 326   in JavaScript, use mw.log.deprecate() instead.
 327 * The 'user.groups' module, deprecated in 1.28, was removed.
 328   Use the 'user' module instead.
 329 * The ResourceLoaderContext::expandModuleNames method, deprecated in 1.33, was
 330   removed. Use ResourceLoader::expandModuleNames instead.
 331 * The ability to override User::$mRights has been removed. Use
 332   PermissionManager::addTemporaryUserRights() instead.
 333 * Previously, when iterating ResultWrapper with foreach() or a similar
 334   construct, the range of the index was 1..numRows. This has been fixed to be
 335   0..(numRows-1).
 336 * The ChangePasswordForm hook, deprecated in 1.27, has been removed. Use the
 337   AuthChangeFormFields hook or security levels instead.
 338 * WikiMap::getWikiIdFromDomain(), deprecated in 1.33, has been removed.
 339   Use WikiMap::getWikiIdFromDbDomain() instead.
 340 * The config variables $wgHtml5, $wgJsMimeType, and $wgXhtmlDefaultNamespace,
 341   which were deprecated and ignored by core since 1.22, are no longer set to any
 342   value, and SkinTemplate no longer emits a 'jsmimetype' key. Any extensions not
 343   updated since 2013 to cope with this deprecation may now break.
 344 * (T222637) Passing ResourceLoaderModule objects to ResourceLoader::register()
 345   or $wgResourceModules is no longer supported.
 346   Use the 'class' or 'factory' option of the array format instead.
 347 * The parameter $lang of the functions generateTOC and tocList in Linker and
 348   DummyLinker must be in type Language when present. Other types are
 349   deprecated since 1.33.
 350 * The static properties mw.Api.errors and mw.Api.warnings, deprecated in 1.29,
 351   have been removed.
 352 * ParserOption::getSpeculativeRevIdCallback(), deprecated in 1.28, has been
 353   removed.
 354 * The UploadVerification hook, deprecated in 1.28, has been removed. Instead,
 355   use the UploadVerifyFile hook.
 356 * UploadBase:: and UploadFromChunks::stashFileGetKey() and stashSession(),
 357   deprecated in 1.28, have been removed. Instead, please use the getFileKey()
 358   method on the response from doStashFile().
 359 * LBFactory::setDomainPrefix() and LoadBalancer::setDomainPrefix(), deprecated
 360   in 1.33, have been removed. Use setLocalDomainPrefix() instead.
 361 * IDatabase::implicitGroupby(), deprecated in 1.30, has been removed.
 362 * IDatabase::doneWrites(), deprecated in 1.31, has been removed.
 363   Use IDatabase::lastDoneWrites() instead.
 364 * Database::reportConnectionError(), deprecated in 1.32, has been removed.
 365 * LoadBalancer::laggedSlaveUsed(), deprecated in 1.28, has been removed.
 366   Use LoadBalancer::laggedReplicaUsed() instead.
 367 * Database::getProperty(), deprecated in 1.28, has been removed.
 368 * IDatabase::getWikiId(), deprecated in 1.30, has been removed.
 369   Use IDatabase::getDomainID() instead.
 370 * (T191231) Support for using Oracle or MSSQL as database backends has been
 371   dropped.
 372 * MessageCache::destroyInstance() has been removed. Instead, call
 373   MediaWikiTestCase::resetServices().
 374 * SearchResult protected field $searchEngine is removed and no longer
 375   initialized after calling SearchResult::initFromTitle().
 376 * The UserIsBlockedFrom hook is only called if a block is found first, and
 377   should only be used to unblock a blocked user.
 378 * Parameters for index.php from PATH_INFO, such as the title, are no longer
 379   written to $_GET.
 380 * The selectFields() methods on classes LocalFile, ArchivedFile, OldLocalFile,
 381   DatabaseBlock, and RecentChange, deprecated in 1.31, have been removed. Use
 382   the corresponding getQueryInfo() methods instead.
 383 * The following methods on Revision, deprecated since 1.31, have been removed.
 384   Use RevisionStore::getQueryInfo() or RevisionStore::getArchiveQueryInfo()
 385   instead.
 386   * Revision::userJoinCond()
 387   * Revision::pageJoinCond()
 388   * Revision::selectFields()
 389   * Revision::selectArchiveFields()
 390   * Revision::selectTextFields()
 391   * Revision::selectPageFields()
 392   * Revision::selectUserFields()
 393
 394 === Deprecations in 1.34 ===
 395 * The MWNamespace class is deprecated. Use NamespaceInfo.
 396 * ExtensionRegistry->load() is deprecated, as it breaks dependency checking.
 397   Instead, use ->queue().
 398 * User::isBlocked() is deprecated since it does not tell you if the user is
 399   blocked from editing a particular page. Use User::getBlock() or
 400   PermissionManager::isBlockedFrom() or PermissionManager::userCan() instead.
 401 * User::isLocallyBlockedProxy and User::inDnsBlacklist are deprecated and moved
 402   to the BlockManager as private helper methods.
 403 * User::isDnsBlacklisted is deprecated. Use BlockManager::isDnsBlacklisted
 404   instead.
 405 * The Config argument to ChangesListSpecialPage::checkStructuredFilterUiEnabled
 406   is deprecated. Pass only the User argument.
 407 * WatchedItem::getUser is deprecated. Use getUserIdentity.
 408 * Passing a Title as the first parameter to the getTimestampById method of
 409   RevisionStore is deprecated. Omit it, passing only the remaining parameters.
 410 * Title::getPreviousRevisionId and Title::getNextRevisionId are deprecated. Use
 411   RevisionLookup::getPreviousRevision and RevisionLookup::getNextRevision.
 412 * The Title parameter to RevisionLookup::getPreviousRevision and
 413   RevisionLookup::getNextRevision is deprecated and should be omitted.
 414 * MWHttpRequest::factory is deprecated. Use HttpRequestFactory.
 415 * The Http class is deprecated. For the request, get, and post methods, use
 416   HttpRequestFactory. For isValidURI, use MWHttpRequest::isValidURI.  For
 417   getProxy, use (string)$wgHTTPProxy. For createMultiClient, construct a
 418   MultiHttpClient directly.
 419 * Http::$httpEngine is deprecated and has no replacement. The default 'guzzle'
 420   engine will eventually be made the only engine for HTTP requests.
 421 * RepoGroup::singleton(), RepoGroup::destroySingleton(),
 422   RepoGroup::setSingleton(), wfFindFile(), and wfLocalFile() are all
 423   deprecated. Use MediaWikiServices instead.
 424 * The getSubjectPage, getTalkPage, and getOtherPage of Title are deprecated.
 425   Use NamespaceInfo's getSubjectPage, getTalkPage, and getAssociatedPage.
 426 * MWMessagePack class, no longer used, has been deprecated in 1.34.
 427 * The Block class is separated into DatabaseBlock (for blocks stored in the
 428   database), and SystemBlock (for temporary blocks created by the system).
 429   SystemBlock should be used when creating any temporary blocks. Block is
 430   a deprecated alias for DatabaseBlock.
 431 * Parser::$mConf is deprecated. It will be removed entirely in a later version.
 432   Some context can be found at T224165.
 433 * Constructing Parser directly is deprecated. Obtain one from ParserFactory.
 434 * Title::moveSubpages is deprecated. Use MovePage::moveSubpages or
 435   MovePage::moveSubpagesIfAllowed.
 436 * The MWNamespace class is deprecated. Use MediaWikiServices::getNamespaceInfo.
 437 * (T62260) Hard deprecate Language::getExtraUserToggles() method.
 438 * Language::viewPrevNext function is deprecated, use
 439   PrevNextNavigationRenderer::buildPrevNextNavigation instead
 440 * User::trackBlockWithCookie and DatabaseBlock::clearCookie are deprecated. Use
 441   BlockManager::trackBlockWithCookie and BlockManager::clearCookie instead.
 442 * DatabaseBlock::setCookie, DatabaseBlock::getCookieValue,
 443   DatabaseBlock::getIdFromCookieValue and AbstractBlock::shouldTrackWithCookie
 444   are moved to internal helper methods for BlockManager::trackBlockWithCookie.
 445 * ResourceLoaderContext::getConfig and ResourceLoaderContext::getLogger have
 446   been deprecated. Inside ResourceLoaderModule subclasses, use the local methods
 447   instead. Elsewhere, use the methods from the ResourceLoader class.
 448 * The 'jquery.accessKeyLabel' module has been deprecated. This jQuery
 449   plugin is now ships as part of the 'mediawiki.util' module bundle.
 450 * The Profiler::setTemplated and Profiler::getTemplated methods have been
 451   deprecated. Use Profiler::setAllowOutput and Profiler::getAllowOutput
 452   instead.
 453 * The Preprocessor_DOM implementation has been deprecated.  It will be
 454   removed in a future release.  Use the Preprocessor_Hash implementation
 455   instead.
 456 * Sanitizer::attributeWhitelist() and Sanitizer::setupAttributeWhitelist()
 457   have been deprecated; they will be made private in the future.
 458 * SearchResult::termMatches() method is deprecated. It was unreliable because
 459   only populated by few search engine implementations. Use
 460   SqlSearchResult::getTermMatches() if really needed.
 461 * SearchResult::getTextSnippet( $terms ) the $terms param is being deprecated
 462   and should no longer be passed. Search engine implemenations should be
 463   responsible for carrying relevant information needed for highlighting with
 464   their own SearchResultSet/SearchResult sub-classes.
 465 * SearchResultSet::free() method is deprecated.
 466 * SearchEngine::$searchTerms protected field is deprecated. Moved to
 467   SearchDatabase.
 468 * The use of the $terms param in the ShowSearchHit and ShowSearchHitTitle
 469   hooks is highly discouraged as it's only populated by SearchDatabase search
 470   engines.
 471 * Skin::escapeSearchLink() is deprecated. Use Skin::getSearchLink() or the skin
 472   template option 'searchaction' instead.
 473 * Skin::getRevisionId() and Skin::isRevisionCurrent() have been deprecated.
 474   Use OutputPage::getRevisionId() and OutputPage::isRevisionCurrent() instead.
 475 * LoadBalancer::haveIndex() and LoadBalancer::isNonZeroLoad() have
 476   been deprecated.
 477 * FileBackend::getWikiId() has been deprecated.
 478   Use FileBackend::getDomainId() instead.
 479 * User::getRights() and User::$mRights have been deprecated. Use
 480   PermissionManager::getUserPermissions() instead.
 481 * The LocalisationCacheRecache hook no longer allows purging of message blobs
 482   to be prevented. Modifying the $purgeBlobs parameter now has no effect.
 483 * SVGMetadataExtractor::getMetadata has been deprecated. Instead, you should
 484   use SVGReader->getMetadata() directly.
 485 * The following public properties on AbstractBlock are deprecated: $mReason,
 486   $mTimestamp, $mExpiry, $mHideName. Use the getters/setters instead.
 487 * The following public properties on DatabaseBlock are deprecated: $mAuto,
 488   $mParentBlockId. To check for an autoblock use DatabaseBlock::getType; to
 489   check for the parent ID, use DatabaseBlock::getParentBlockId.
 490 * SearchEngine::userHighlightPrefs() is deprecated, simply stop passing
 491   $contextlines and $contextchars to the SearchHighlighter methods, they will
 492   use proper defaults defined in SearchHighlighter::DEFAULT_CONTEXT_LINES and
 493   DEFAULT_CONTEXT_CHARS.
 494 * SearchUpdate constructor: passing a string as the title param and or a boolean
 495   or a string as the content will produce a deprecation warning.
 496 * SearchEngine::getTextFromContent() is deprecated, use getTextForSearchIndex()
 497   directly from the Content object.
 498 * SearchEngine::textAlreadyUpdatedForIndex() is deprecated, given the
 499   deprecation above this method is no longer needed/called and should not be
 500   implemented by SearchEngine implementation.
 501 * IDatabase::bufferResults() has been deprecated. Use query batching instead.
 502 * MessageCache::singleton() is deprecated. Use
 503   MediaWikiServices::getMessageCache().
 504 * Constructing MovePage directly is deprecated. Use MovePageFactory.
 505 * TempFSFile::factory() has been deprecated. Use TempFSFileFactory instead.
 506 * wfIsBadImage() is deprecated. Use the BadFileLookup service instead.
 507 * Building a new SearchResult is hard-deprecated, always call
 508   SearchResult::newFromTitle(). This class is being refactored into an abstract
 509   class. If you extend this class please be sure to override all its methods
 510   or extend RevisionSearchResult.
 511 * Skin::getSkinNameMessages() is deprecated and no longer used.
 512 * The mediawiki.RegExp module is deprecated; use mw.util.escapeRegExp() instead.
 513 * Specifying a SpecialPage object for the list of special pages (either through
 514   the SpecialPage_initList hook or by adding to $wgSpecialPages) is now
 515   deprecated.
 516 * Use of ActorMigration with 'ar_user', 'img_user', 'oi_user', 'fa_user',
 517   'rc_user', 'log_user', and 'ipb_by' is deprecated. Queries should be adjusted
 518   to use the corresponding actor fields directly. Note that use with
 519   'rev_user' is *not* deprecated at this time.
 520
 521 === Other changes in 1.34 ===
 522 * …
 523
 524 == Compatibility ==
 525 MediaWiki 1.34 requires PHP 7.0.13 or later. Although HHVM 3.18.5 or later is
 526 supported, it is generally advised to use PHP 7.0.13 or later for long term
 527 support. It also requires the following PHP extensions:
 528
 529 * ctype
 530 * dom
 531 * fileinfo
 532 * iconv
 533 * json
 534 * mbstring
 535 * xml
 536
 537 MySQL/MariaDB is the recommended DBMS. PostgreSQL or SQLite can also be used,
 538 but support for them is somewhat less mature.
 539
 540 The supported versions are:
 541
 542 * MySQL 5.5.8 or later
 543 * PostgreSQL 9.2 or later
 544 * SQLite 3.8.0 or later
 545
 546 == Online documentation ==
 547 Documentation for both end-users and site administrators is available on
 548 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 549 for pages that explicitly state that their contents are in the public domain):
 550
 551        https://www.mediawiki.org/wiki/Special:MyLanguage/Documentation
 552
 553 == Mailing list ==
 554 A mailing list is available for MediaWiki user support and discussion:
 555
 556        https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 557
 558 A low-traffic announcements-only list is also available:
 559
 560        https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 561
 562 It's highly recommended that you sign up for one of these lists if you're
 563 going to run a public MediaWiki, so you can be notified of security fixes.
 564
 565 == IRC help ==
 566 There's usually someone online in #mediawiki on irc.freenode.net.