1 Security reminder: If you have PHP's register_globals option set, you must
2 turn it off. MediaWiki will not work with it enabled.
6 THIS IS NOT A RELEASE YET
8 MediaWiki 1.25 is an alpha-quality branch and is not recommended for use in
11 === Configuration changes in 1.25 ===
12 * $wgPageShowWatchingUsers was removed.
13 * $wgLocalVirtualHosts has been added to replace $wgConf->localVHosts.
14 * $wgAntiLockFlags was removed.
15 * $wgJavaScriptTestConfig was removed.
16 * Edit tokens returned from User::getEditToken may change on every call. Token
17 validity must be checked by passing the user-supplied token to
18 User::matchEditToken rather than by testing for equality with a
19 newly-generated token.
20 * (T74951) The UserGetLanguageObject hook may be passed any IContextSource
21 for its $context parameter. Formerly it was documented as receiving a
22 RequestContext specifically.
23 * Profiling was restructured and $wgProfiler now requires an 'output' parameter.
24 See StartProfiler.sample for details.
25 * $wgMangleFlashPolicy was added to make MediaWiki's mangling of anything that
26 might be a flash policy directive configurable.
27 * ApiOpenSearch now supports XML output. The OpenSearchXml extension should no
28 longer be used. If extracts and page images are desired, the TextExtracts and
29 PageImages extensions are required.
30 * $wgOpenSearchTemplate is deprecated in favor of $wgOpenSearchTemplates.
31 * Edits are now prepared via AJAX as users type edit summaries. This behavior
32 can be disabled via $wgAjaxEditStash.
33 * (T46740) The temporary option $wgIncludejQueryMigrate was removed, along
34 with the jQuery Migrate library, as indicated when this option was provided in
37 === New features in 1.25 ===
38 * (T64861) Updated plural rules to CLDR 26. Includes incompatible changes
39 for plural forms in Russian, Prussian, Tagalog, Manx and several languages
40 that fall back to Russian.
41 * (T60139) ResourceLoaderFileModule now supports language fallback
42 for 'languageScripts'.
43 * Added a new hook, "ContentAlterParserOutput", to allow extensions to modify the
44 parser output for a content object before links update.
45 * (T37785) Enhanced recent changes and extended watchlist are now default.
46 Documentation: https://meta.wikimedia.org/wiki/Help:Enhanced_recent_changes
47 and https://www.mediawiki.org/wiki/Manual:$wgDefaultUserOptions.
48 * (T69341) SVG images will no longer be base64-encoded when being embedded
49 in CSS. This results in slight size increase before gzip compression (due to
50 percent-encoding), but up to 20% decrease after it.
51 * Upgrade jStorage to v0.4.12.
52 * MediaWiki now natively supports page status indicators: icons (or short text
53 snippets) usually displayed in the top-right corner of the page. They have
54 been in use on Wikipedia for a long time, implemented using templates and CSS
56 - Basic wikitext syntax: <indicator name="foo">[[File:Foo.svg|20px]]</indicator>
57 - Usage instructions: https://www.mediawiki.org/wiki/Help:Page_status_indicators
58 - Adjusting custom skins to support indicators:
59 https://www.mediawiki.org/wiki/Manual:Skinning#Page_status_indicators
60 * Edit tokens may now be time-limited: passing a maximum age to
61 User::matchEditToken will reject any older tokens.
62 * The debug logging internals have been overhauled, and are now using the
64 * Update CSSJanus to v1.1.1.
65 * Update lessphp to v0.5.0.
66 * Added a hook, "ApiOpenSearchSuggest", to allow extensions to provide extracts
67 and images for ApiOpenSearch output. The semantics are identical to the
68 "OpenSearchXml" hook provided by the OpenSearchXml extension.
69 * PrefixSearchBackend hook now has an $offset parameter. Combined with $limit,
70 this allows for pagination of prefix results. Extensions using this hook
71 should implement supporting behavior. Not doing so can result in undefined
72 behavior from API clients trying to continue through prefix results.
73 * Update jQuery from v1.11.1 to v1.11.2.
75 ==== External libraries ====
76 * MediaWiki now requires certain external libraries to be installed. In the past
77 these were bundled inside the Git repository of MediaWiki core, but now they
78 need to be installed separately. For users using the tarball, this will be taken
79 care of and no action will be required. Users using Git will either need to use
80 composer to fetch dependencies or use the mediawiki/vendor repository which includes
81 all dependencies for MediaWiki core and ones used in Wikimedia deployment. Detailed
82 instructions can be found at:
83 https://www.mediawiki.org/wiki/Download_from_Git#Fetch_external_libraries
84 * The following libraries are now required:
86 This library provides the interfaces set by the PSR-3 standard (http://www.php-fig.org/psr/psr-3/)
87 which are used by MediaWiki interally by the MWLogger class.
88 See the structured logging RfC (https://www.mediawiki.org/wiki/Requests_for_comment/Structured_logging)
89 for more background information.
91 This library was formerly bundled with MediaWiki core and has been removed.
92 It automatically flips CSS for RTL support.
94 This library was formerly bundled with MediaWiki core and has been removed.
95 It compiles LESS files into CSS.
97 This library was formerly a part of MediaWiki core, and has been moved into a separate library.
98 It provides CDB functions which are used in the Interwiki and Localization caches.
99 More information about the library can be found at https://www.mediawiki.org/wiki/CDB.
101 === Bug fixes in 1.25 ===
102 * (T73003) No additional code will be generated to try to load CSS-embedded
103 SVG images in Internet Explorer 6 and 7, as they don't support them anyway.
104 * (T69021) On Special:BookSources, corrected validation of ISBNs (both
105 10- and 13-digit forms) containing "X".
106 * Page moving was refactored into a MovePage class. As part of that:
107 ** The AbortMove hook was removed.
108 ** MovePageIsValidMove is for extensions to specify whether a page
109 cannot be moved for technical reasons, and should not be overridden.
110 ** MovePageCheckPermissions is for checking whether the given user is
111 allowed to make the move.
112 ** Title::moveNoAuth() was deprecated. Use the MovePage class instead.
113 ** Title::moveTo() was deprecated. Use the MovePage class instead.
114 ** Title::isValidMoveOperation() broken down into MovePage::isValidMove()
115 and MovePage::checkPermissions().
117 === Action API changes in 1.25 ===
118 * (T67403) XML tag highlighting is now only performed for formats
119 "xmlfm" and "wddxfm".
120 * action=paraminfo supports generalized submodules (modules=query+value),
121 querymodules and formatmodules are deprecated
122 * action=paraminfo no longer outputs descriptions and other help text by
123 default. If needed, it may be requested using the new 'helpformat' parameter.
124 * action=help has been completely rewritten, and outputs help in HTML
125 rather than plain text.
126 * Hitting api.php without specifying an action now displays only the help for
127 the main module, with links to submodule help.
128 * API help is no longer displayed on errors.
129 * 'uselang' is now a recognized API parameter; "uselang=user" may be used to
130 explicitly select the language from the current user's preferences, and
131 "uselang=content" may be used to select the wiki's content language.
132 * Default output format for the API is now jsonfm.
133 * Simplified continuation will return a "batchcomplete" property in the result
134 when a batch of pages is complete.
135 * Pretty-printed HTML output now has nicer formatting and (if available)
136 better syntax highlighting.
137 * Deprecated list=deletedrevs in favor of newly-added prop=deletedrevisions and
138 list=alldeletedrevisions.
139 * prop=revisions will gracefully continue when given too many revids or titles,
140 rather than just ignoring the extras.
141 * prop=revisions will no longer die if rvcontentformat doesn't match a
142 revision's content model; it will instead warn and omit the content.
143 * If the user has the 'deletedhistory' right, action=query's revids parameter
144 will now recognize deleted revids.
145 * prop=revisions may be used as a generator, generating revids.
146 * (T68776) format=json results will no longer be corrupted when
147 $wgMangleFlashPolicy is in effect. format=php results will cleanly return an
148 error instead of returning invalid serialized data.
149 * Generators may now return data for the generated pages when used with
151 * Query page data for generator=search and generator=prefixsearch will now
152 include an "index" field, which may be used by the client for sorting the
154 * ApiOpenSearch now supports XML output.
155 * ApiOpenSearch will now output descriptions and URLs as array indexes 2 and 3
157 * (T76051) list=tags will now continue correctly.
158 * (T76052) list=tags can now indicate whether a tag is defined.
159 * (T75522) list=prefixsearch now supports continuation
161 === Action API internal changes in 1.25 ===
162 * ApiHelp has been rewritten to support i18n and paginated HTML output.
163 Most existing modules should continue working without changes, but should do
165 * Add an i18n message "apihelp-{$moduleName}-description" to replace getDescription().
166 * Add i18n messages "apihelp-{$moduleName}-param-{$param}" for each parameter
167 to replace getParamDescription(). If necessary, the settings array returned
168 by getParams() can use the new ApiBase::PARAM_HELP_MSG key to override the
170 * Implement getExamplesMessages() to replace getExamples().
171 * Modules with submodules (like action=query) must have their submodules
172 override ApiBase::getParent() to return the correct parent object.
173 * The 'APIGetDescription' and 'APIGetParamDescription' hooks are deprecated,
174 and will have no effect for modules using i18n messages. Use
175 'APIGetDescriptionMessages' and 'APIGetParamDescriptionMessages' instead.
176 * Api formatters will no longer be asked to display the help screen on errors.
177 * ApiMain::getCredits() was removed. The credits are available in the
178 'api-credits' i18n message.
179 * ApiFormatBase has been changed to support i18n and syntax highlighting via
180 extensions with the new 'ApiFormatHighlight' hook. Core syntax highlighting
182 * ApiFormatBase now always buffers. Output is done when
183 ApiFormatBase::closePrinter is called.
184 * Much of the logic in ApiQueryRevisions has been split into ApiQueryRevisionsBase.
185 * The 'revids' parameter supplied by ApiPageSet will now count deleted
186 revisions as "good" if the user has the 'deletedhistory' right. New methods
187 ApiPageSet::getLiveRevisionIDs() and ApiPageSet::getDeletedRevisionIDs() are
188 provided to access just the live or just the deleted revids.
189 * Added ApiPageSet::setGeneratorData() and ApiPageSet::populateGeneratorData()
190 to allow generators to include data in the action=query result.
191 * The following methods have been deprecated and may be removed in a future
193 * ApiBase::getDescription
194 * ApiBase::getParamDescription
195 * ApiBase::getExamples
196 * ApiBase::makeHelpMsg
197 * ApiBase::makeHelpArrayToString
198 * ApiBase::makeHelpMsgParameters
199 * ApiFormatBase::setUnescapeAmps
200 * ApiFormatBase::getWantsHelp
201 * ApiFormatBase::setHelp
202 * ApiFormatBase::formatHTML
203 * ApiFormatBase::setBufferResult
204 * ApiFormatBase::getDescription
206 * ApiMain::reallyMakeHelpMsg
207 * ApiMain::makeHelpMsgHeader
208 * ApiQueryImageInfo::getPropertyDescriptions
209 * The following classes have been deprecated and may be removed in a future
211 * ApiQueryDeletedrevs
213 === Languages updated in 1.25 ===
215 MediaWiki supports over 350 languages. Many localisations are updated
216 regularly. Below only new and removed languages are listed, as well as
217 changes to languages because of Bugzilla reports.
219 * (T66440) Kazakh (kk) wikis should no longer forcefully reset the user's
220 interface language to kk where unexpected.
222 === Other changes in 1.25 ===
223 * The skin autodiscovery mechanism, deprecated in MediaWiki 1.23, has been
224 removed. See https://www.mediawiki.org/wiki/Manual:Skin_autodiscovery for
225 migration guide for creators and users of custom skins that relied on it.
226 * Javascript variable 'wgFileCanRotate' now only available on Special:Upload.
227 * (T58257) Set site logo from mediawiki.skinning.interface module instead of
228 inline styles in the HTML.
229 * Removed ApiQueryUsers::getAutoGroups(). (deprecated since 1.20)
230 * Removed XmlDumpWriter::schemaVersion(). (deprecated since 1.20)
231 * Removed LogEventsList::getDisplayTitle(). (deprecated since 1.20)
232 * Removed Preferences::trySetUserEmail(). (deprecated since 1.20)
233 * Removed mw.user.name() and mw.user.anonymous() methods. (deprecated since 1.20)
234 * Removed 'ok' and 'err' parameters in the mediawiki.api modules. (deprecated
236 * Removed 'async' parameter from the mw.Api#getCategories() method. (deprecated
238 * Removed 'jquery.json' module. (deprecated since 1.24)
239 Use the 'json' module and global JSON object instead.
240 * Deprecated OutputPage::readOnlyPage() and OutputPage::rateLimited().
241 Also, the former will now throw an MWException if called with one or more
243 * Removed hitcounters and associated code.
244 * The "temp" zone of the upload respository is now considered private. If it
245 already exists (such as under the images/ directory), please make sure that
246 the directory is not web readable (e.g. via a .htaccess file).
247 * BREAKING CHANGE: In the XML dump format used by Special:Export and
248 dumpBackup.php, the <model> and <format> tags now apprear before the <text>
249 tag, instead of after the <text> and <sha1> tags.
250 The new schema version is 0.10, the new schema URI is:
251 https://www.mediawiki.org/xml/export-0.10.xsd
252 * MWFunction::call() and MWFunction::callArray() were removed, having being
254 * Deprecated the getInternalLinkAttributes, getInternalLinkAttributesObj,
255 and getInternalLinkAttributes methods in Linker, and removed
256 getExternalLinkAttributes method, which was deprecated in MediaWiki 1.18.
257 * Removed Sites class, which was deprecated in 1.21 and replaced by SiteSQLStore.
258 * The mw.api.getToken() method now uses action=query?meta=tokens. This will now
259 fail for custom tokens registered only via the deprecated ApiTokensGetTokenTypes
260 hook. The ApiQueryTokensRegisterTypes hook should be used for this to work.
261 * Added wgRelevantArticleId to the client-side config, for use on special pages.
262 * Deprecated the TitleIsCssOrJsPage hook. Superseded by the
263 ContentHandlerDefaultModelFor hook since MediaWiki 1.21.
264 * Deprecated the TitleIsWikitextPage hook. Superseded by the
265 ContentHandlerDefaultModelFor hook since MediaWiki 1.21.
266 * Changed parsing of variables in schema (.sql) files:
267 ** The substituted values are no longer parsed. (Formerly, several passes
268 were made for each variable, so depending on the order in which variables
269 were defined, variables might have been found inside encoded values. This
270 is no longer the case.)
271 ** Variables are no longer string encoded when the /*$var*/ syntax is used.
272 If string encoding is necessary, use the '{$var}' syntax instead.
273 ** Variable names must only consist of one or more of the characters
275 ** In source text of the form '{$A}'{$B}' or `{$A}`{$B}`, where variable A
276 does not exist yet variable B does, the latter may not be replaced.
277 However, this difference is unlikely to arise in practice.
278 * (T67278) RFC, PMID, and ISBN "magic links" must be surrounded by non-word
279 characters on both sides.
283 MediaWiki 1.25 requires PHP 5.3.3 or later. There is experimental support for
286 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
287 support for them is somewhat less mature. There is experimental support for
288 Oracle and Microsoft SQL Server.
290 The supported versions are:
292 * MySQL 5.0.2 or later
293 * PostgreSQL 8.3 or later
294 * SQLite 3.3.7 or later
295 * Oracle 9.0.1 or later
296 * Microsoft SQL Server 2005 (9.00.1399)
300 1.25 has several database changes since 1.24, and will not work without schema
301 updates. Note that due to changes to some very large tables like the revision
302 table, the schema update may take quite long (minutes on a medium sized site,
303 many hours on a large site).
305 If upgrading from before 1.11, and you are using a wiki as a commons
306 repository, make sure that it is updated as well. Otherwise, errors may arise
307 due to database schema changes.
309 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
310 new database fields are filled with data.
312 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
313 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
316 Don't forget to always back up your database before upgrading!
318 See the file UPGRADE for more detailed upgrade instructions.
320 For notes on 1.24.x and older releases, see HISTORY.
322 == Online documentation ==
324 Documentation for both end-users and site administrators is available on
325 MediaWiki.org, and is covered under the GNU Free Documentation License (except
326 for pages that explicitly state that their contents are in the public domain):
328 https://www.mediawiki.org/wiki/Documentation
332 A mailing list is available for MediaWiki user support and discussion:
334 https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
336 A low-traffic announcements-only list is also available:
338 https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
340 It's highly recommended that you sign up for one of these lists if you're
341 going to run a public MediaWiki, so you can be notified of security fixes.
345 There's usually someone online in #mediawiki on irc.freenode.net.