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().
116 * The Special:WhatLinksHere page linked from 'Number of redirects to this page'
117 on action=info about a file page does not list file links anymore.
119 === Action API changes in 1.25 ===
120 * (T67403) XML tag highlighting is now only performed for formats
121 "xmlfm" and "wddxfm".
122 * action=paraminfo supports generalized submodules (modules=query+value),
123 querymodules and formatmodules are deprecated
124 * action=paraminfo no longer outputs descriptions and other help text by
125 default. If needed, it may be requested using the new 'helpformat' parameter.
126 * action=help has been completely rewritten, and outputs help in HTML
127 rather than plain text.
128 * Hitting api.php without specifying an action now displays only the help for
129 the main module, with links to submodule help.
130 * API help is no longer displayed on errors.
131 * 'uselang' is now a recognized API parameter; "uselang=user" may be used to
132 explicitly select the language from the current user's preferences, and
133 "uselang=content" may be used to select the wiki's content language.
134 * Default output format for the API is now jsonfm.
135 * Simplified continuation will return a "batchcomplete" property in the result
136 when a batch of pages is complete.
137 * Pretty-printed HTML output now has nicer formatting and (if available)
138 better syntax highlighting.
139 * Deprecated list=deletedrevs in favor of newly-added prop=deletedrevisions and
140 list=alldeletedrevisions.
141 * prop=revisions will gracefully continue when given too many revids or titles,
142 rather than just ignoring the extras.
143 * prop=revisions will no longer die if rvcontentformat doesn't match a
144 revision's content model; it will instead warn and omit the content.
145 * If the user has the 'deletedhistory' right, action=query's revids parameter
146 will now recognize deleted revids.
147 * prop=revisions may be used as a generator, generating revids.
148 * (T68776) format=json results will no longer be corrupted when
149 $wgMangleFlashPolicy is in effect. format=php results will cleanly return an
150 error instead of returning invalid serialized data.
151 * Generators may now return data for the generated pages when used with
153 * Query page data for generator=search and generator=prefixsearch will now
154 include an "index" field, which may be used by the client for sorting the
156 * ApiOpenSearch now supports XML output.
157 * ApiOpenSearch will now output descriptions and URLs as array indexes 2 and 3
159 * (T76051) list=tags will now continue correctly.
160 * (T76052) list=tags can now indicate whether a tag is defined.
161 * (T75522) list=prefixsearch now supports continuation
162 * (T78737) action=expandtemplates can now return page properties.
164 === Action API internal changes in 1.25 ===
165 * ApiHelp has been rewritten to support i18n and paginated HTML output.
166 Most existing modules should continue working without changes, but should do
168 * Add an i18n message "apihelp-{$moduleName}-description" to replace getDescription().
169 * Add i18n messages "apihelp-{$moduleName}-param-{$param}" for each parameter
170 to replace getParamDescription(). If necessary, the settings array returned
171 by getParams() can use the new ApiBase::PARAM_HELP_MSG key to override the
173 * Implement getExamplesMessages() to replace getExamples().
174 * Modules with submodules (like action=query) must have their submodules
175 override ApiBase::getParent() to return the correct parent object.
176 * The 'APIGetDescription' and 'APIGetParamDescription' hooks are deprecated,
177 and will have no effect for modules using i18n messages. Use
178 'APIGetDescriptionMessages' and 'APIGetParamDescriptionMessages' instead.
179 * Api formatters will no longer be asked to display the help screen on errors.
180 * ApiMain::getCredits() was removed. The credits are available in the
181 'api-credits' i18n message.
182 * ApiFormatBase has been changed to support i18n and syntax highlighting via
183 extensions with the new 'ApiFormatHighlight' hook. Core syntax highlighting
185 * ApiFormatBase now always buffers. Output is done when
186 ApiFormatBase::closePrinter is called.
187 * Much of the logic in ApiQueryRevisions has been split into ApiQueryRevisionsBase.
188 * The 'revids' parameter supplied by ApiPageSet will now count deleted
189 revisions as "good" if the user has the 'deletedhistory' right. New methods
190 ApiPageSet::getLiveRevisionIDs() and ApiPageSet::getDeletedRevisionIDs() are
191 provided to access just the live or just the deleted revids.
192 * Added ApiPageSet::setGeneratorData() and ApiPageSet::populateGeneratorData()
193 to allow generators to include data in the action=query result.
194 * The following methods have been deprecated and may be removed in a future
196 * ApiBase::getDescription
197 * ApiBase::getParamDescription
198 * ApiBase::getExamples
199 * ApiBase::makeHelpMsg
200 * ApiBase::makeHelpArrayToString
201 * ApiBase::makeHelpMsgParameters
202 * ApiFormatBase::setUnescapeAmps
203 * ApiFormatBase::getWantsHelp
204 * ApiFormatBase::setHelp
205 * ApiFormatBase::formatHTML
206 * ApiFormatBase::setBufferResult
207 * ApiFormatBase::getDescription
209 * ApiMain::reallyMakeHelpMsg
210 * ApiMain::makeHelpMsgHeader
211 * ApiQueryImageInfo::getPropertyDescriptions
212 * The following classes have been deprecated and may be removed in a future
214 * ApiQueryDeletedrevs
216 === Languages updated in 1.25 ===
218 MediaWiki supports over 350 languages. Many localisations are updated
219 regularly. Below only new and removed languages are listed, as well as
220 changes to languages because of Bugzilla reports.
222 * (T66440) Kazakh (kk) wikis should no longer forcefully reset the user's
223 interface language to kk where unexpected.
225 === Other changes in 1.25 ===
226 * The skin autodiscovery mechanism, deprecated in MediaWiki 1.23, has been
227 removed. See https://www.mediawiki.org/wiki/Manual:Skin_autodiscovery for
228 migration guide for creators and users of custom skins that relied on it.
229 * Javascript variable 'wgFileCanRotate' now only available on Special:Upload.
230 * (T58257) Set site logo from mediawiki.skinning.interface module instead of
231 inline styles in the HTML.
232 * Removed ApiQueryUsers::getAutoGroups(). (deprecated since 1.20)
233 * Removed XmlDumpWriter::schemaVersion(). (deprecated since 1.20)
234 * Removed LogEventsList::getDisplayTitle(). (deprecated since 1.20)
235 * Removed Preferences::trySetUserEmail(). (deprecated since 1.20)
236 * Removed mw.user.name() and mw.user.anonymous() methods. (deprecated since 1.20)
237 * Removed 'ok' and 'err' parameters in the mediawiki.api modules. (deprecated
239 * Removed 'async' parameter from the mw.Api#getCategories() method. (deprecated
241 * Removed 'jquery.json' module. (deprecated since 1.24)
242 Use the 'json' module and global JSON object instead.
243 * Deprecated OutputPage::readOnlyPage() and OutputPage::rateLimited().
244 Also, the former will now throw an MWException if called with one or more
246 * Removed hitcounters and associated code.
247 * The "temp" zone of the upload respository is now considered private. If it
248 already exists (such as under the images/ directory), please make sure that
249 the directory is not web readable (e.g. via a .htaccess file).
250 * BREAKING CHANGE: In the XML dump format used by Special:Export and
251 dumpBackup.php, the <model> and <format> tags now apprear before the <text>
252 tag, instead of after the <text> and <sha1> tags.
253 The new schema version is 0.10, the new schema URI is:
254 https://www.mediawiki.org/xml/export-0.10.xsd
255 * MWFunction::call() and MWFunction::callArray() were removed, having being
257 * Deprecated the getInternalLinkAttributes, getInternalLinkAttributesObj,
258 and getInternalLinkAttributes methods in Linker, and removed
259 getExternalLinkAttributes method, which was deprecated in MediaWiki 1.18.
260 * Removed Sites class, which was deprecated in 1.21 and replaced by SiteSQLStore.
261 * The mw.api.getToken() method now uses action=query?meta=tokens. This will now
262 fail for custom tokens registered only via the deprecated ApiTokensGetTokenTypes
263 hook. The ApiQueryTokensRegisterTypes hook should be used for this to work.
264 * Added wgRelevantArticleId to the client-side config, for use on special pages.
265 * Deprecated the TitleIsCssOrJsPage hook. Superseded by the
266 ContentHandlerDefaultModelFor hook since MediaWiki 1.21.
267 * Deprecated the TitleIsWikitextPage hook. Superseded by the
268 ContentHandlerDefaultModelFor hook since MediaWiki 1.21.
269 * Changed parsing of variables in schema (.sql) files:
270 ** The substituted values are no longer parsed. (Formerly, several passes
271 were made for each variable, so depending on the order in which variables
272 were defined, variables might have been found inside encoded values. This
273 is no longer the case.)
274 ** Variables are no longer string encoded when the /*$var*/ syntax is used.
275 If string encoding is necessary, use the '{$var}' syntax instead.
276 ** Variable names must only consist of one or more of the characters
278 ** In source text of the form '{$A}'{$B}' or `{$A}`{$B}`, where variable A
279 does not exist yet variable B does, the latter may not be replaced.
280 However, this difference is unlikely to arise in practice.
281 * (T67278) RFC, PMID, and ISBN "magic links" must be surrounded by non-word
282 characters on both sides.
283 * (T30950, T31025) RFC, PMID, and ISBN "magic links" can no longer contain
284 newlines; but they can contain and other non-newline whitespace.
288 MediaWiki 1.25 requires PHP 5.3.3 or later. There is experimental support for
291 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
292 support for them is somewhat less mature. There is experimental support for
293 Oracle and Microsoft SQL Server.
295 The supported versions are:
297 * MySQL 5.0.2 or later
298 * PostgreSQL 8.3 or later
299 * SQLite 3.3.7 or later
300 * Oracle 9.0.1 or later
301 * Microsoft SQL Server 2005 (9.00.1399)
305 1.25 has several database changes since 1.24, and will not work without schema
306 updates. Note that due to changes to some very large tables like the revision
307 table, the schema update may take quite long (minutes on a medium sized site,
308 many hours on a large site).
310 If upgrading from before 1.11, and you are using a wiki as a commons
311 repository, make sure that it is updated as well. Otherwise, errors may arise
312 due to database schema changes.
314 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
315 new database fields are filled with data.
317 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
318 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
321 Don't forget to always back up your database before upgrading!
323 See the file UPGRADE for more detailed upgrade instructions.
325 For notes on 1.24.x and older releases, see HISTORY.
327 == Online documentation ==
329 Documentation for both end-users and site administrators is available on
330 MediaWiki.org, and is covered under the GNU Free Documentation License (except
331 for pages that explicitly state that their contents are in the public domain):
333 https://www.mediawiki.org/wiki/Documentation
337 A mailing list is available for MediaWiki user support and discussion:
339 https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
341 A low-traffic announcements-only list is also available:
343 https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
345 It's highly recommended that you sign up for one of these lists if you're
346 going to run a public MediaWiki, so you can be notified of security fixes.
350 There's usually someone online in #mediawiki on irc.freenode.net.