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MediaWiki extensions

フックは特定のイベント(ページ保存や利用者ログインなど)が発生したとき、カスタム コードの実行を認めます。 たとえば下記のコード スニペットにより、フックのPageContentSaveCompleteが走る場面で必ず関数MyExtensionHooks::pageContentSaveCompleteを呼び出し、PageContentSaveCompleteに特有の関数引数を渡します。

Hooks can be registered by mapping the name of the hook to the callback in the extension's extension.json file:

"Hooks": {
    "PageContentSaveComplete": "MyExtensionHooks::onPageContentSaveComplete"

MediaWikiはこのようなフックを用意し、MediaWiki ソフトウェアの機能を拡張しています。特定の関数(ユーザー処理つまりイベントハンドラー)をフックに定義すると、メインのMediaWikiコードにおいて適切なタイミングでその関数を呼び出し、その時点で開発者が有効と判断した追加のタスクをいくつでも実行します。フックに定義できるハンドラーは複数で、定義順に呼び出した定義が行った変更を、一連の後続の関数に渡していきます。

フックに機能を割り当てるには LocalSettings.php 末尾またはファイル スコープの拡張機能 ($wgExtensionFunctions 関数や ParserFirstCallInit フックではなく) で割り当てます。 拡張機能の場合、LocalSettings.php の設定がフックの機能の挙動に条件を付けるなら、フックに機能を割り当て、条件が適合しないときは早めに関数を停止する必要があります。



A hook is triggered by a call to HookContainer::run, usually via a method in HookRunner. HookContainer will find the hook handlers to run, and calls them with the parameters given to HookContainer::run. Hook handlers are registered via extension.json . も参照してください。

この使用事例は WikiPage.phpdoPurge 関数で、HookRunner::onArticlePurge は doPurge に呼び出されると ArticlePurge フックを実行、引数として $this を当てます:

$this->getHookRunner()->onArticlePurge( $this )

多数のフックを呼び出すのは コア ですが、拡張機能 からもフックを呼び出せます。


イベントハンドラーはフックに設定する関数で、 フックが代表するイベントが発生するたびに実行されます。構成要素は次のとおりです。

  • 関数と、設定で有効にするデータを添えたもの。
  • method変数と、設定で有効にするデータを添えたオブジェクト。

Register the event handler by adding it to the global $wgHooks array for a given event. Hooks can be added from any point in the execution before the hook is called, but are most commonly added in LocalSettings.php, its included files, or, for extensions, in the file extension.json. All the following are valid ways to define a hook function for the event EventName that is passed two parameters, showing the code that will be executed when EventName happens:

書式 構文 結果として呼び出す関数
Static function $wgHooks['EventName'][] = 'MyExtensionHooks::onEventName'; MyExtensionHooks::onEventName( $param1, $param2 );
関数 データ無 $wgHooks['EventName'][] = 'someFunction'; someFunction( $param1, $param2 );
関数、データ有 $wgHooks['EventName'][] = [ 'someFunction', $someData ]; someFunction( $someData, $param1, $param2 );
Function, no data
(weird syntax, but OK)
$wgHooks['EventName'][] = [ 'someFunction' ]; someFunction( $param1, $param2 );
$wgHooks['EventName'][] = function ( $param1, $param2 ) {
// ...function body
(the anonymous function is called with the hook's parameters)
オブジェクトのみ $wgHooks['EventName'][] = $object; $object->onEventName( $param1, $param2 );
Object with method $wgHooks['EventName'][] = [ $object, 'someMethod' ]; $object->someMethod( $param1, $param2 );
Object with method and data $wgHooks['EventName'][] = [ $object, 'someMethod', $someData ]; $object->someMethod( $someData, $param1, $param2 );
Object only
(weird syntax, but OK)
$wgHooks['EventName'][] = [ $object ]; $object->onEventName( $param1, $param2 );

拡張機能の場合、構文はextension.json ファイルと同様(前述の1番目と2番目の事例に対応):

	"Hooks": {
		"EventName": [

When an event occurs, the function (or object method) that you registered will be called, the event's parameters, along with any optional data you provided at registration. Note that when an object is the hook and you didn't specify a method, the method called is "onEventName". For other events this would be 'onArticleSave', 'onUserLogin', etc.

The optional data is useful if you want to use the same function or object for different purposes. For example:

$wgHooks['PageContentSaveComplete'][] = [ 'ircNotify', 'TimStarling' ];
$wgHooks['PageContentSaveComplete'][] = [ 'ircNotify', 'brion' ];

This code would result in ircNotify being run twice when a page is saved: once for 'TimStarling', and once for 'brion'.

Event handlers can return one of three possible values:

  • no return value (or null): the hook handler has operated successfully. (Before MediaWiki 1.23, returning true was required.)
  • "some string": an error occurred; processing should stop and the error should be shown to the user
  • false: the hook handler has done all the work necessary, or replaced normal handling. This will prevent further handlers from being run, and in some cases tells the calling function to skip normal processing.


Handling hooks in MediaWiki 1.35 and later

MediaWiki バージョン:

MediaWiki 1.35 introduces a system for handling hooks based on individual hook interfaces. This system allows for dependency injection, provides machine-readable parameter names and types, and integrates hook documentation with code editors.

For extensions, methods of registering and handling hooks in MediaWiki 1.34 and earlier are not being deprecated and will continue to work as expected. Extension authors who want to pilot the new system are welcome to do so. To learn more, see the hook specification in MediaWiki Core and the announcement on wikitech-l.

Changes to hook names

Prior to MediaWiki 1.35, several hooks included colons in their names. With the implementation of hook interfaces, colons in hook names have been replaced with underscores. For example, the interface for ApiFeedContributions::feedItem is ApiFeedContributions__feedItemHook. This does not impact extensions using the hook system in MediaWiki 1.34 and earlier.

Registering hooks using HookHandlers

To register a hook in an extension's extension.json file, the new system uses HookHandlers to specify how the handler object is created. Instead of mapping a hook directly to a function, a hook maps to a HookHandlers object which specifies the class and has the option to inject services.[1]

For example, to register the BeforePageDisplay hook:

    "Hooks": {
        "BeforePageDisplay": "main"
    "HookHandlers": {
        "main": {
            "class": "MediaWiki\\Extension\\MyExtension\\HookHandler",
            "services": [ "UserNameUtils" ]

Handling hooks using interfaces

To work with registration using HookHandlers, extensions should define an event handler class that implements the hook interface. Hook interfaces are named with the hook name with "Hook" appended.

namespace MediaWiki\Extension\MyExtension;

use OutputPage;
use Skin;

class HookHandler implements BeforePageDisplayHook {
    public function onBeforePageDisplayHook( $out, $skin ) { ... }

Hook behavior before MediaWiki 1.22 vs after

Extracted from: change 500542: for non-abortable hooks (most hooks) returning true has been redundant since MediaWiki 1.22 (in 2015). This was done to reduce chances of accidental failure because we had experienced several outages and broken features due to silent failures where e.g. one hook callback somewhere accidentally returned a non-bool or false instead of true/void and thus short-circuits the whole system.

(Returning non-true/non-void in a MediaWiki Hook is equivalent to e.preventDefault and e.stopImmediatePropagation in JavaScript events, it kills other listeners for the same event).

For example, if onBeforePageDisplay hook were to return false in MobileFrontend, it would mean Popups stops because its callback would no longer run. See differences below, assuming the hook onBeforePageDisplay.

MediaWiki 1.22 以前

public static function onBeforePageDisplay( OutputPage $out, Skin $skin ) {
    // some code
    return true; // explicit


public static function onBeforePageDisplay( OutputPage $out, Skin $skin ) {
    // some code
    return; // explicit

MediaWiki 1.22+

public static function onBeforePageDisplay( OutputPage $out, Skin $skin ) {
    // some code
    // no need for a return true or return


MediaWiki コアのフックは現状ではここMediaWiki.orgのほか フック インターフェイス (ソースコード リポジトリ内) の2箇所に説明文書を置くことになっています。場合によってはどちらかで作業が未完了なことがあるため、フックの説明文書の確認は両方の場所を調べてください。

Each hook provided by MediaWiki Core is defined in a hook interface. Typically, hook interfaces are located in a "Hook" sub-namespace inside the caller namespace. For example, Storage/Hook/PageContentSaveCompleteHook.php. You can find a list of hook interfaces in the generated MediaWiki PHP documentation.


As of June 2020, docs/hooks.txt is deprecated as a source of documentation for individual hooks. For more information about the introduction of hooks based on HookContainer, see the hook specification in MediaWiki Core.

Hook interface doc template

In hook interfaces, doc comments specify the status, purpose, parameters, and behavior of the hook.

 * @stable for implementation
 * @ingroup Hooks
interface NameHook {
	 * This hook is called after/before/when...
	 * Use this hook to...
	 * @since x.xx
	 * @param type $name Description
	 * @return bool|void True or no return value to continue or false to abort
	public function onName( $param );




小分類: 記事の管理 - ページ編集 - ページのレンダリング - UI - 特別ページ - 利用者管理 - ログ - 外装 / テンプレート - API - インポートとエクスポート - その他
  警告: New hooks are added to MediaWiki fairly frequently, so this list is not always completely up to date. As with most documentation on this site, if you need complete up-to-the-minute information you are advised to consult the generated list of hook interfaces. As ever, you are encouraged to update this list to correct any errors or omissions.
関数 バージョン フック 説明
記事の管理 1.4.0 ArticleDelete 記事の削除要求をソフトウェアが受けると毎回、発生する
1.4.0 ArticleDeleteComplete 記事の削除要求が処理された後に発生する
1.9.1 ArticleUndelete 記事の更新が1件以上復元された時点
1.12.0 ArticleRevisionUndeleted 記事の更新が復元された後に発生する
1.8.0 ArticleFromTitle Called to determine the class to handle the article rendering, based on title
1.4.0 ArticleProtect Occurs whenever the software receives a request to protect an article
1.4.0 ArticleProtectComplete Occurs after the protect article request has been processed
1.6.0 ArticleInsertComplete Occurs after a new article has been created
1.11.0 RevisionInsertComplete Called after a revision is inserted into the DB
1.4.0 ArticleSave (廃止予定) (MultiContentSaveを利用) ソフトウェアが記事保存のリクエストを受けるたびに発生
1.21.0 PageContentSave (廃止予定) (MultiContentSaveを利用) Occurs whenever the software receives a request to save an article
1.35.0 MultiContentSave Occurs whenever the software receives a request to save an article
1.4.0 ArticleSaveComplete (廃止予定) (PageContentSaveComplete を使用すること。) 記事を保管するリクエストの処理後に発生
1.21.0 ConvertContent Called when a conversion to another content model is requested.
1.21.0 PageContentSaveComplete Occurs after the save article request has been processed
1.11.0 ArticleUpdateBeforeRedirect Occurs after a page is updated (usually on save), before the user is redirected back to the page
1.5.7 ArticleEditUpdateNewTalk Allows an extension to prevent user notification when a new message is added to their talk page.
1.14.0 ArticleEditUpdates Called when edit updates (mainly link tracking) are made when an article has been changed.
1.6.0 ArticleEditUpdatesDeleteFromRecentchanges Occurs before saving to the database. If returning false old entries are not deleted from the recentchangeslist.
1.8.0 RecentChange_save Called after a "Recent Change" is committed to the DB
1.6.0 SpecialMovepageAfterMove Called after a page is moved.
1.22.0 TitleMove Occurs before a requested pagemove is performed
1.4.0 TitleMoveComplete Occurs whenever a request to move an article is completed
1.25.0 MovePageIsValidMove Specify whether a page can be moved for technical reasons.
1.12.0 ArticleRollbackComplete Occurs after an article rollback is completed
1.12.0 ArticleMergeComplete after merging to article using Special:Mergehistory
1.6.0 ArticlePurge Allows an extension to cancel a purge.
1.13.0 ArticleRevisionVisibilitySet called when changing visibility of one or more revisions of an article
1.21.0 ContentHandlerDefaultModelFor called when deciding the default content model for a given title.
1.21.0 ContentHandlerForModelID called when a ContentHandler is requested for a given content model name, but no entry for that model exists in $wgContentHandlers .
1.23.0 Article::MissingArticleConditions called when showing a page.
1.20.0 TitleIsAlwaysKnown Allows overriding default behaviour for determining if a page exists.
ページの編集 1.6.0 AlternateEdit Used to replace the entire edit page, altogether.
1.21.0 AlternateEditPreview Allows replacement of the edit preview
1.6.0 EditFilter Perform checks on an edit
1.12.0 EditFilterMerged (廃止予定) (use EditFilterMergedContent) Post-section-merge edit filter
1.21.0 EditFilterMergedContent Post-section-merge edit filter
1.7.0 EditFormPreloadText Called when edit page for a new article is shown. This lets you fill the text-box of a new page with initial wikitext.
1.8.3 EditPage::attemptSave Called before an article is saved, that is before insertNewArticle() is called
1.6.0 EditPage::showEditForm:fields Allows injection of form field into edit form.
1.6.0 EditPage::showEditForm:initial Allows injection of HTML into edit form
1.21.0 EditPage::showStandardInputs:options Allows injection of form fields into the editOptions area
1.13.0 EditPageBeforeConflictDiff Allows modifying the EditPage object and output when there's an edit conflict.
1.12.0 EditPageBeforeEditButtons Used to modify the edit buttons on the edit form
1.14.0 EditPageBeforeEditChecks Allows modifying the edit checks below the textarea in the edit form
ページのレンダリング 1.27.0 AfterBuildFeedLinks Executed after all feed links are created.
1.6.0 ArticlePageDataBefore Executes before data is loaded for the article requested.
1.6.0 ArticlePageDataAfter Executes after loading the data of an article from the database.
1.6.0 ArticleViewHeader Called after an articleheader is shown.
1.6.0 PageRenderingHash Alter the parser cache option hash key.
1.6.0 ArticleAfterFetchContent Used to process raw wiki code after most of the other parser processing is complete.
1.22.0 GalleryGetModes Allows extensions to add classes that can render different modes of a gallery.
1.6.0 ParserClearState Called at the end of Parser::clearState()
1.21.0 ParserCloned Called when the Parser object is cloned.
1.5.0 ParserBeforeStrip Used to process the raw wiki code before any internal processing is applied.
1.5.0 ParserAfterStrip (廃止予定) Before version 1.14.0, used to process raw wiki code after text surrounded by <nowiki> tags have been protected but before any other wiki text has been processed. In version 1.14.0 and later, runs immediately after ParserBeforeStrip.
1.6.0 ParserBeforeInternalParse Replaces the normal processing of stripped wiki text with custom processing. Used primarily to support alternatives (rather than additions) to the core MediaWiki markup syntax.
1.6.0 ParserGetVariableValueVarCache Use this to change the value of the variable cache or return false to not use it.
1.6.0 ParserGetVariableValueTs Use this to change the value of the time for the {{LOCAL...}} magic word.
1.6.0 ParserGetVariableValueSwitch Assigns a value to a user defined variable.
1.10.0 InternalParseBeforeLinks Used to process the expanded wiki code after <nowiki>, HTML-comments, and templates have been treated. Suitable for syntax extensions that want to customize the treatment of internal link syntax, i.e. [[....]].
1.13.0 LinkerMakeExternalLink Called before the HTML for external links is returned. Used for modifying external link HTML.
1.13.0 LinkerMakeExternalImage Called before external image HTML is returned. Used for modifying external image HTML.
1.23.0 LinkerMakeMediaLinkFile Called before the HTML for media links is returned. Used for modifying media link HTML.
1.11.0 EditSectionLink (廃止予定) Override the return value of Linker::editSectionLink(). Called after creating [edit] link in header in Linker::editSectionLink but before HTML is displayed.
1.11.0 EditSectionLinkForOther (廃止予定) Override the return value of Linker::editSectionLinkForOther(). Called after creating [edit] link in header in Linker::editSectionLinkForOther but before HTML is displayed.
1.5.0 ParserBeforeTidy Used to process the nearly-rendered html code for the page (but before any html tidying occurs).
1.5.0 ParserAfterTidy Used to add some final processing to the fully-rendered page output.
1.24.0 ContentGetParserOutput Customize parser output for a given content object, called by AbstractContent::getParserOutput. May be used to override the normal model-specific rendering of page content.
1.8.0 OutputPageParserOutput Called after parse, before the HTML is added to the output.
1.6.0 OutputPageBeforeHTML Called every time wikitext is added to the OutputPage, after it is parsed but before it is added. Called after the page has been rendered, but before the HTML is displayed.
1.4.3 CategoryPageView Called before viewing a categorypage in CategoryPage::view
1.5.1 ArticleViewRedirect Allows an extension to prevent the display of a "Redirected From" link on a redirect page.
1.10.0 IsFileCacheable Allow an extension to disable file caching on pages.
1.10.1 BeforeParserFetchTemplateAndtitle Allows an extension to specify a version of a page to get for inclusion in a template.
1.18.0 BeforeParserFetchFileAndTitle Allows an extension to select a different version of an image to link to.
1.10.1 BeforeParserrenderImageGallery Allows an extension to modify an image gallery before it is rendered.
1.17.0 ResourceLoaderRegisterModules Allows registering modules with ResourceLoader
1.24.0 SidebarBeforeOutput Directly before the sidebar is output
ユーザーインターフェイス 1.5.4 AutoAuthenticate Called to authenticate users on external/environmental means
1.4.0 UserLoginComplete Occurs after a user has successfully logged in
1.18.0 BeforeWelcomeCreation Allows an extension to change the message displayed upon a successful login.
1.4.0 UserLogout Occurs when the software receives a request to log out
1.4.0 UserLogoutComplete Occurs after a user has successfully logged out
1.6.0 userCan To interrupt/advise the "user can do X to Y article" check
1.4.0 WatchArticle Occurs whenever the software receives a request to watch an article
1.4.0 WatchArticleComplete Occurs after the watch article request has been processed
1.4.0 UnwatchArticle Occurs whenever the software receives a request to unwatch an article
1.4.0 UnwatchArticleComplete Occurs after the unwatch article request has been processed
1.6.0 MarkPatrolled Called before an edit is marked patrolled
1.6.0 MarkPatrolledComplete Called after an edit is marked patrolled
1.4.0 EmailUser Occurs whenever the software receives a request to send an email from one user to another
1.4.0 EmailUserComplete Occurs after an email has been sent from one user to another
1.6.0 SpecialMovepageAfterMove Called after a page is moved.
1.19.0 SpecialSearchCreateLink Called when making the message to create a page or go to an existing page
1.17.0 SpecialSearchGo (廃止予定)
1.6.0 SpecialSearchNogomatch Called when the 'Go' feature is triggered and the target doesn't exist. Full text search results are generated after this hook is called
1.19.0 SpecialSearchPowerBox the equivalent of SpecialSearchProfileForm for the advanced form
1.5.7 ArticleEditUpdateNewTalk Before updating user_newtalk when a user talk page was changed.
1.5.7 UserRetrieveNewTalks called when retrieving "You have new messages!" message(s)
1.5.7 UserClearNewTalkNotification called when clearing the "You have new messages!" message, return false to not delete it
1.6.0 ArticlePurge Executes before running "&action=purge"
ファイルの読み込み 1.6.0 UploadVerification (廃止予定) (UploadVerifyFile を使用すること。) ファイルのアップロード時に呼び出し、ファイル検証の条件追加を可能にする
1.17 UploadVerifyFile Called when a file is uploaded, to allow extra file verification to take place
1.28 UploadVerifyUpload (preferred) Can be used to reject a file upload. Unlike 'UploadVerifyFile' it provides information about upload comment and the file description page, but does not run for uploads to stash.
1.6.4 UploadComplete Called when a file upload has completed.
特別ページ 1.6.0 SpecialPageGetRedirect
1.24.0 SpecialBlockModifyFormFields Add or modify block fields of Special:Block
1.28.0 SpecialContributions::formatRow::flags Called before rendering a Special:Contributions row.
1.13.0 SpecialListusersDefaultQuery Called right before the end of UsersPager::getDefaultQuery()
1.13.0 SpecialListusersFormatRow Called right before the end of UsersPager::formatRow()
1.13.0 SpecialListusersHeader Called before closing the <fieldset> in UsersPager::getPageHeader()
1.13.0 SpecialListusersHeaderForm Called before adding the submit button in UsersPager::getPageHeader()
1.13.0 SpecialListusersQueryInfo Called right before the end of UsersPager::getQueryInfo()
1.6.0 SpecialPageExecuteBeforeHeader (廃止予定) called before setting the header text of the special page
1.6.0 SpecialPageExecuteBeforePage (廃止予定) Called before setting the page text of the special page
1.6.0 SpecialPageExecuteAfterPage (廃止予定) called after executing a special page
1.6.0 SpecialVersionExtensionTypes (廃止予定) Adds to the types that can be used with $wgExtensionCredits
1.7.0 SpecialPage_initList Called after the Special Page list is populated
1.9.0 UploadForm:initial Called just before the upload form is generated
1.9.0 UploadForm:BeforeProcessing Called just before the file data (for example description) are processed, so extensions have a chance to manipulate them.
1.14.0 UserrightsChangeableGroups Called after the list of groups that can be manipulated via Special:UserRights is populated, but before it is returned.
1.24.0 WhatLinksHereProps Allows extensions to annotate WhatLinksHere entries.
利用者管理 1.5.0 AddNewAccount Called after a user account is created (廃止予定)
1.26.0 LocalUserCreated Called immediately after a local user has been created and saved to the database.
1.27.0 SessionMetadata Add metadata to a session being saved
1.27.0 SessionCheckInfo Validate session info as it's being loaded from storage
1.27.0 SecuritySensitiveOperationStatus Affect the return value from AuthManager::securitySensitiveOperationStatus()
1.27.0 UserLoggedIn Called after a user is logged in
1.4.0 BlockIp Occurs whenever the software receives a request to block (or change the block settings of) an IP address or user
1.4.0 BlockIpComplete Occurs after the request to block (or change block settings of) an IP or user has been processed
1.29.0 UnblockUser Occurs whenever the software receives a request to unblock an IP address or user
1.29.0 UnblockUserComplete Occurs after the request to unblock an IP or user has been processed
1.29.0 ChangeUserGroups Called before a user's group memberships are changed
1.6.0 UserRights (廃止予定) (use UserGroupsChanged) Called after a user's group memberships are changed
1.11.0 UserGetRights Called in User::getRights() to dynamically add rights
1.32.0 UserGetRightsRemove Called in User::getRights() to dynamically remove rights
1.6.0 GetBlockedStatus Fired after the user's getBlockStatus is set
1.26.0 UserIsLocked Fired to check if a user account is locked
ログ記録 1.6.0 LogPageActionText (廃止予定) Strings used by wfMsg as a header.
1.5.0 LogPageLogHeader (廃止予定)
1.5.0 LogPageLogName (廃止予定)
1.5.0 LogPageValidTypes (廃止予定)
1.26.0 LogException Called before an exception (or PHP error) is logged.
外装 / テンプレート 1.7.0 BeforePageDisplay Allows last minute changes to the output page, e.g. adding of CSS or Javascript by extensions.
1.6.0 MonoBookTemplateToolboxEnd Called by Monobook skin after toolbox links have been rendered (useful for adding more)
1.7.0 PersonalUrls (SkinTemplate.php) Called after the list of personal URLs (links at the top in Monobook) has been populated.
1.24.0 PostLoginRedirect (SpecialUserlogin.php) Modify the post login redirect behavior.
1.23.0 BaseTemplateAfterPortlet (SkinTemplate.php) After rendering of portlets.
1.11.0 SkinAfterBottomScripts (Skin.php) At the end of Skin::bottomScripts()
1.12.0 SkinSubPageSubtitle (Skin.php) Called before the list of subpage links on top of a subpage is generated
1.5.0 SkinTemplateContentActions Called after the default tab list is populated (list is context dependent i.e. "normal" article or "special page").
1.16.0 SkinTemplateNavigation Called on content pages only after tabs have been added, but before variants have been added. See the other two SkinTemplateNavigation hooks for other points tabs can be modified at.
1.18.0 SkinTemplateNavigation::Universal Called on both content and special pages after variants have been added
1.18.0 SkinTemplateNavigation::SpecialPage Called on special pages after the special tab is added but before variants have been added
1.6.0 SkinTemplatePreventOtherActiveTabs Called to enable/disable the inclusion of additional tabs to the skin.
1.6.0 SkinTemplateSetupPageCss (廃止予定) Sets up the CSS for a skin
1.6.0 SkinTemplateBuildContentActionUrlsAfterSpecialPage (廃止予定) After the single tab when showing a special page
1.6.0 SkinTemplateBuildNavUrlsNav_urlsAfterPermalink Called after the permalink has been entered in navigation URL array.
1.23.0 SkinTemplateGetLanguageLink Called after building the data for a language link from which the actual html is constructed.
1.27.0 AuthChangeFormFields Allows modification of AuthManager-based forms
1.25.0 LoginFormValidErrorMessages Allows to add additional error messages (SpecialUserLogin.php).
1.25.0 MinervaDiscoveryTools Allow other extensions to add or override discovery tools (SkinMinerva.php).
API 1.23.0 ApiBeforeMain Called before ApiMain is executed
1.13.0 APIEditBeforeSave Called right before saving an edit submitted through api.php?action=edit
1.13.0 APIQueryInfoTokens Use this hook to add custom tokens to prop=info
1.13.0 APIQueryRevisionsTokens Use this hook to add custom tokens to prop=revisions
1.14.0 APIQueryRecentChangesTokens Use this hook to add custom tokens to list=recentchanges
1.14.0 APIGetAllowedParams Use this hook to modify a module's parameters
1.14.0 APIGetParamDescription Use this hook to modify a module's parameter descriptions
1.14.0 APIAfterExecute Use this hook to extend core API modules
1.14.0 APIQueryAfterExecute Use this hook to extend core API query modules
1.14.0 APIQueryGeneratorAfterExecute Use this hook to extend core API query modules
1.23.0 GetExtendedMetadata Allows including additional file metadata information in the imageinfo API.
1.23.0 AddNewAccountApiForm Allows modifying the internal login form when creating an account via the API.
1.23.0 AddNewAccountApiResult Modifies the API output when an account is created via the API.
1.25.0 ApiOpenSearchSuggest Called when constructing the OpenSearch results. Hooks can alter or append to the array.
インポート/エクスポート 1.17.0 AfterImportPage When a page import is completed
1.17.0 ImportHandleLogItemXMLTag When parsing a XML tag in a log item
1.17.0 ImportHandlePageXMLTag When parsing a XML tag in a page
1.17.0 ImportHandleRevisionXMLTag When parsing a XML tag in a page revision
1.17.0 ImportHandleToplevelXMLTag When parsing a top level XML tag
1.17.0 ImportHandleUploadXMLTag When parsing a XML tag in a file upload
1.16.0 ModifyExportQuery Modify the query used by the exporter.
1.15.0 WikiExporter::dumpStableQuery Get the SELECT query for "stable" revisions dumps
1.16.0 XmlDumpWriterOpenPage Called at the end of XmlDumpWriter::openPage, to allow extra metadata to be added.
1.16.0 XmlDumpWriterWriteRevision Called at the end of a revision in an XML dump, to add extra metadata.
その他 1.19.0 AlternateUserMailer Called before mail is sent so that mail could be logged (or something else) instead of using PEAR or PHP's mail().
1.6.0 ArticleEditUpdatesDeleteFromRecentchanges Occurs before saving to the database.
1.21.0 CategoryAfterPageAdded Called after a page is added to a category
1.21.0 CategoryAfterPageRemoved Called after a page is removed from a category
1.19.0 Collation::factory Allows extensions to register new collation names, to be used with $wgCategoryCollation
1.8.0 DisplayOldSubtitle Allows extensions to modify the displaying of links to other revisions when browsing through revisions.
1.18.0 GetDefaultSortkey Allows to override what the default sortkey is, which is used to order pages in a category.
1.25.0 GetDifferenceEngine Allows custom difference engine extensions such as Special:MyLanguage/Extension:WikEdDiff.
1.21.0 GetDoubleUnderscoreIDs hook for modifying the list of magic words
1.6.0 GetInternalURL Used to modify fully-qualified URLs (useful for squid cache purging)
1.6.0 GetLocalURL Used to modify local URLs as output into page links
1.6.0 GetFullURL Used to modify fully-qualified URLs used in redirects/export/offsite data
1.16.0 ImgAuthBeforeStream Executed before file is streamed to user, but only when using img_auth
1.22.0 LanguageLinks Manipulate a page's language links.
1.14.0 LinkBegin Used when generating internal and interwiki links in Linker::link()
1.14.0 LinkEnd Used when generating internal and interwiki links in Linker::link(), just before the function returns a value.
1.8.0 LoadAllMessages (廃止予定) Called when $wgMessageCache->loadAllMessages() has been invoked, allows extensions to inject their own messages.
1.6.0 MagicWordMagicWords (廃止予定) Allows extensions to define new magic words.
1.6.0 MagicWordwgVariableIDs Tells MediaWiki that one or more magic word IDs should be treated as variables.
1.12.0 MediaWikiPerformAction Override MediaWiki::performAction()
1.27.0 MediaWikiServices Called when a global MediaWikiServices instance is initialised.
1.5.7 MessagesPreLoad Occurs when loading a message from the database
1.6.0 ParserTestParser called when creating a new instance of Parser for parser tests
1.8.0 RecentChange_save Called after a "Recent Change" is committed to the DB
1.5.0 SpecialContributionsBeforeMainOutput Before the form on Special:Contributions
1.22.0 TitleSquidURLs To modify/provide alternate URLs to send HTTP PURGE requests.
1.17.0 UnitTestsList Add tests that should be run as part of the unit test suite.
1.30.0 UnitTestsAfterDatabaseSetup Called right after MediaWiki's test infrastructure has finished creating/duplicating core tables for unit tests.
1.30.0 UnitTestsBeforeDatabaseTeardown Called right before MediaWiki's test infrastructure begins tearing down tables for unit tests.
1.4.0 UnknownAction (廃止予定) MediaWiki 1.19以前、新規クエリを追加する操作にしよう。
1.24.0 UserMailerChangeReturnPath Called to generate a VERP return address when UserMailer sends an email, with a bounce handling extension.
1.8.0 UserToggles (廃止予定) 個人設定名を実行する前に呼び出し。代わりに GetPreferences フックを使用すること。
1.6.0 wgQueryPages Runs for every Special page that extends the QueryPage class (fired when including the file QueryPage.php). It is only useful in maintenance/updateSpecialPages.php and in QueryPage Api.

Alphabetical list of hooks

フックの完全な一覧は、カテゴリ を参照してください。こちらはさらに最新に近い状態に維持されています。