Manual:Configuration settings (alphabetical)

This is an index of all supported configuration settings based on the file.

Never edit ; copy appropriate lines to   instead and amend them as appropriate.

This index is in alphabetical order (ignoring the $wg prefix). Note that the only setting without this prefix is $IP, which is listed under I.

Settings removed in versions of MediaWiki prior to 1.19 are no longer listed here. Please use the search box to find the relevant manual page (e.g. ).


 * Listed alphabetically | Listed by function | Category:MediaWiki configuration settings

A

 * $wgAccountCreationThrottle - Number of accounts each IP address may create, 0 to disable. Requires memcached.
 * $wgActionPaths - Paths for various user actions. Used to make URLS prettier.
 * $wgActions - Array of allowed values for the "action" parameter for normal pages.
 * $wgActiveUserDays - The number of days within which a person must make edits to be considered an "active" user
 * $wgAdaptiveMessageCache - Keep track which messages are requested and load only most used messages.
 * $wgAddGroups - Controls who can add specific groups using Special:Userrights.
 * $wgAdditionalMailParams - Additional email parameters, will be passed as the last argument to mail PHP function call.
 * $wgAdvancedSearchHighlighting - Set to true to have nicer highlighted text in search results.
 * $wgAdvertisedFeedTypes - Feed types that should be provided by default.
 * $wgAggregateStatsID - Allows statistics to be aggregated over more than one wiki when using udp logging.
 * $wgAddGroups - allow finer control over usergroup assignment.
 * $wgAdvancedSearchHighlighting - Set to true to have nicer highligted text in search results.
 * $wgAjaxExportList - List of functions in AjaxFunctions.php that are callable via action=ajax.
 * $wgAjaxLicensePreview - Use AJAX to preview licensing for uploads.
 * $wgAjaxUploadDestCheck - Enable AJAX check for file overwrite, pre-upload.
 * $wgAjaxWatch - Enable watching/unwatching pages using AJAX.
 * $wgAllDBsAreLocalhost - Make all database connections secretly go to localhost. Useful for debugging.
 * $wgAllowAsyncCopyUploads - Allow asynchronous copy uploads.
 * $wgAllowCategorizedRecentChanges - Allow to filter the recentchanges by a category or one of its sub(subsubsub...)categories
 * $wgAllowChunkedUploads - Allow chunked uploading.
 * $wgAllowCopyUploads - Allow uploads from URLs as well as local files.
 * $wgAllowDisplayTitle - Allows use of DISPLAYTITLE magic word.
 * $wgAllowExternalImages - Determines whether or not MediaWiki will allow external images to be rendered inline with text.
 * $wgAllowExternalImagesFrom - If  is false, you can specify exceptions here.
 * $wgAllowHTMLEmail - Set to true to enable HTML emails.
 * $wgAllowImageMoving - Enable file renaming.
 * $wgAllowImageTag - Allow  tag to be used in wikitext.
 * $wgAllowJavaUploads - Allow Java archive uploads.
 * $wgAllowMicrodataAttributes - Enable HTML5 microdata attributes for use in wikitext.
 * $wgAllowPageInfo - Allow the "info" action.
 * $wgAllowPrefChange - Policies for how each preference is allowed to be changed, in the presence of external authentication.
 * $wgAllowRdfaAttributes - Enable RDFa attributes for use in wikitext.
 * $wgAllowRealName - Whether or not to allow real name fields.
 * $wgAllowSchemaUpdates - Allow database schema updates to be executed with update.php script.
 * $wgAllowSiteCSSOnRestrictedPages - Allow site-wide CSS on restricted special pages.
 * $wgAllowSlowParserFunctions - Allow other parser functions like "pagesinnamespace".
 * $wgAllowSpecialInclusion - Allow special page inclusions such as.
 * $wgAllowTitlesInSVG - Allow  tag in SVG files.
 * $wgAllowUserCss - Allow user Cascading Style Sheets (CSS)
 * $wgAllowUserCssPrefs - Allow user preferences implemented in CSS.
 * $wgAllowUserJs - Allow user JavaScript pages
 * $wgAllUnicodeFixes - Whether to always convert certain Unicode sequences to modern ones regardless of the content language.
 * $wgAlwaysUseTidy - Always use Tidy
 * $wgAmericanDates - Use 'mdy' instead of 'dmy' as the default date format, e.g. 'May 12' instead of '12 May'.
 * $wgAntiLockFlags - Anti-lock flags.
 * $wgAntivirus - Internal name of virus scanner.
 * $wgAntivirusRequired - Determines if a failed virus scan will cause the file to be rejected.
 * $wgAntivirusSetup - Configuration for different virus scanners.
 * $wgAPICacheHelpTimeout - Set the timeout for the API help text cache. Set to 0 to disable caching of API help text.
 * $wgAPIFormatModules - API format module extensions.
 * $wgApiFrameOptions - Control framing of api pages.
 * $wgAPIGeneratorModules - This setting is ignored
 * $wgAPIMaxDBRows - Maximum number of rows to scan in API database queries.
 * $wgAPIMaxResultSize - Maximum size (in bytes) of an API result.
 * $wgAPIMaxUncachedDiffs - The maximum number of uncached diffs that can be retrieved in one API request.
 * $wgAPIListModules - API list module extensions.
 * $wgAPIMetaModules - API meta module extensions.
 * $wgAPIModules - API module extensions.
 * $wgAPIPropModules - API prop module extensions.
 * $wgAPIRequestLog - Log file or URL (TCP or UDP) to log API requests to.
 * $wgAppleTouchIcon - Optional URL to an icon to use when bookmarking to the home screen on Apple handheld devices.
 * $wgApplyIpBlocksToXff - Apply IP address blocks also to users having a blocked IP in their XFF header.
 * $wgArticleCountMethod - Method used to determine if a page in a content namespace should be counted as a valid article.
 * $wgArticlePath - The URL template used to create article links.
 * $wgArticleRobotPolicies - Allow customisation of robot policies on a per-article basis.
 * $wgAsyncHTTPTimeout - Timeout for asynchronous HTTP requests.
 * $wgAuth - Authentication plugin. See AuthPlugin.
 * $wgAutoblockExpiry - Number of seconds before autoblock entries expire
 * $wgAutoConfirmAge - Number of seconds an account is required to age before it's given the implicit 'autoconfirmed' group membership.
 * $wgAutoConfirmCount - Number of edits an account requires before it is autoconfirmed; passing both this AND the time requirement ($wgAutoConfirmAge) is needed
 * $wgAutocreatePolicy - Policy to create new accounts with external authentication.
 * $wgAutoloadClasses - Array mapping class names to filenames, for autoloading.
 * $wgAutoloadLocalClasses - Array mapping class names to filenames, for autoloading.
 * $wgAutopromote - Conditions of automatic promotion of user to specific groups
 * $wgAutopromoteOnce - Conditions of automatic promotion of user to specific groups that are done only once.
 * $wgAutopromoteOnceLogInRC - Whether to put user rights log entries for autopromotion in recent changes.

B

 * $wgBetterDirectionality - Better directionality support.
 * $wgBlockAllowsUTEdit - Allow blocked users to edit their talk pages
 * $wgBlockCIDRLimit - Maximum CIDR range when blocking an IP range.
 * $wgBlockDisablesLogin - Blocked users will not be allowed to login
 * $wgBlockOpenProxies - Automatic open proxy test on edit.
 * $wgBreakFrames - Break out of framesets. This can be used to prevent external sites from framing your site with ads.
 * $wgBrowserBlackList - Browser blacklist for non-Unicode-compliant browsers.
 * $wgBug34832TransitionalRollback - Rollback a few bugs (features) related to language variant conversion introduced in 1.19

C

 * $wgCacheDirectory - Directory for caching interface messages in the local filesystem.
 * $wgCacheEpoch - Set this to current time to invalidate all prior cached pages.
 * $wgCachePages - Allow client-side caching of pages
 * $wgCachePrefix - Custom value for the cache key prefix.
 * $wgCacheSharedUploads - Cache shared metadata in memcached.
 * $wgCacheVaryCookies - A list of cookies that influence the cache.
 * $wgCanonicalLanguageLinks - Whether to enable canonical language links in meta data.
 * $wgCanonicalServer - Server name with protocol to use for links to the wiki from other places
 * $wgCapitalLinkOverrides - Per namespace configuration for.
 * $wgCapitalLinks - Set this to false to avoid forcing the first letter of links to capitals.
 * $wgCascadingRestrictionLevels - Restriction levels that can be used with cascading protection
 * $wgCategoryCollation - What collation categories use to sort with
 * $wgCategoryMagicGallery - On category pages, show thumbnail gallery for images belonging to that category instead of listing them as articles.
 * $wgCategoryPagingLimit - Paging limit for items in categories.
 * $wgCheckFileExtensions - Check if the file extension is allowed on upload.
 * $wgCheckUserForceSummary - Make filling in the "reason" field for CheckUser checks compulsory (bug 18613).
 * $wgCleanSignatures - Substitute templates in signatures.
 * $wgCleanupPresentationalAttributes - Put as much as possible presentational HTML attributes in CSS.
 * $wgClockSkewFudge - Fudge time to add to cache timestamps to adjust for clock skew.
 * $wgColorErrors - Whether to color command-line error messages.
 * $wgCommandLineDarkBg - Assume a dark terminal background for maintenance scripts.
 * $wgCommandLineMode - Indicates whether MW is running in command-line mode. Should never be set manually!
 * $wgCompiledFiles - A list of files that should be compiled into a HipHop build, in addition to those listed in $wgAutoloadClasses.
 * $wgCompressRevisions - Compress new page revisions if possible
 * $wgConf - Create a site configuration object. Not used for much in a default install.
 * $wgConfigRegistry - Registry of factory functions to create config objects
 * $wgContentHandlers - Mapping of content type handlers
 * $wgContentHandlerTextFallback - How to react if a plain text version of a non-text Content object is requested using
 * $wgContentHandlerUseDB - Whether to use the database fields introduced by the ContentHandler facility
 * $wgContentNamespaces - Namespaces which are considered to contain real content, or articles
 * $wgCookieDomain - Explicit domain for login cookies.
 * $wgCookieExpiration - Number of seconds before HTTP cookies expire
 * $wgCookieHttpOnly - Set the  flag on all cookies set by MediaWiki (to prevent access from JavaScript).
 * $wgCookiePath - Explicitly declared "path" for cookies at the cookie domain
 * $wgCookiePrefix - Custom cookie prefix.
 * $wgCookieSecure - Whether cookies are secured.
 * $wgCopyrightIcon - Set this to some HTML to override the rights icon with an arbitrary logo.
 * $wgCopyUploadAsyncTimeout - HTTP timeout (in seconds) for asynchronous upload by URL
 * $wgCopyUploadProxy - HTTP proxy to use for copy upload requests.
 * $wgCopyUploadsDomains - Limit to a specific whitelist
 * $wgCopyUploadsFromSpecialUpload - Add an interface to Special:Upload to enable uploading from URLs
 * $wgCopyUploadTimeout - HTTP timeout (in seconds) for upload by URL
 * $wgCountCategorizedImagesAsUsed - On Special:Unusedimages, consider images "used" if they are put into a category.
 * $wgCountTotalSearchHits - Allow the default search engine to count the total number of search matches, to be shown on Special:Search.
 * $wgCrossSiteAJAXdomainExceptions - Domains that should not be allowed to make AJAX requests, even if they match one of the domains allowed by.
 * $wgCrossSiteAJAXdomains - Domains that may make cross-site AJAX requests to the MediaWiki API.
 * $wgCustomConvertCommand - Use another resizing converter, e.g. GraphicMagick.

D

 * $wgDBadminpassword - The password for $wgDBadminuser.
 * $wgDBadminuser - Database username used by the maintenance scripts.
 * $wgDBAhandler - Selects which DBA handler
 * $wgDBAvgStatusPoll - Average time between SHOW STATUS queries in overload conditions.
 * $wgDBClusterTimeout - When to give error messages.
 * $wgDBcompress - Whether to use compression in DB connection.
 * $wgDBerrorLog - File to log database errors to.
 * $wgDBerrorLogTZ - Timezone to use in the error log.
 * $wgDBmwschema - Schema that Postgres stores the MediaWiki tables in. Defaults to 'mediawiki'
 * $wgDBmysql4 - Set to true to use enhanced fulltext search.
 * $wgDBmysql5 - Set to true to set MySQL connection into UTF-8 encoding (experimental)
 * $wgDBname - Name of the database.
 * $wgDBport - Database port. Only used by PostgreSQL.
 * $wgDBpassword - The password for.
 * $wgDBprefix - Table name prefix.
 * $wgDBserver - Host name or IP address of database server.
 * $wgDBservers - Settings for the database load balancer (database servers and load ratios).
 * $wgDBssl - Whether to use SSL in DB connection.
 * $wgDBTableOptions - MySQL table options to use during installation or update.
 * $wgDBtestpassword - The password for $wgDBtestuser.
 * $wgDBtestuser - Database username that has permission to create and drop the test databases only.
 * $wgDBtransactions - Set to true if using InnoDB tables.
 * $wgDBtype - Type of database.
 * $wgDBuser - Database username.
 * $wgDBWindowsAuthentication - Use Integrated Windows Authentication rather than
 * $wgDebugAPI - Enable API debugging by removing some restrictions like POST-only
 * $wgDebugComments - Include portions of log output in page HTML comment
 * $wgDebugDBTransactions - Trace lifecycle of the database transaction (opening, commit, rollback)
 * $wgDebugDumpSql - Dump SQL queries to debug output
 * $wgDebugFunctionEntry - Whether to additionally output a debug message on every  and   call.
 * $wgDebugLogFile - The file name of the debug log, or empty if disabled. wfDebug appends to this file.
 * $wgDebugLogGroups - Direct  output for certain groups to files other than.
 * $wgDebugLogPrefix - Prefix for debug log lines.
 * $wgDebugPrintHttpHeaders - Print HTTP headers for every request in the debug information.
 * $wgDebugProfiling - Detects non-matching wfProfileIn/wfProfileOut calls
 * $wgDebugRawPage - If false, 'action=raw' and load.php hits will not result in debug output.
 * $wgDebugRedirects - Displays redirect location instead of actually redirecting to the target URL
 * $wgDebugTidy - Put tidy warnings in HTML comments, only works for internal tidy.
 * $wgDebugTimestamps - Prefix debug messages with relative timestamp.
 * $wgDebugToolbar - Display the debugging toolbar
 * $wgDefaultExternalStore - Default external store for new revisions.
 * $wgDefaultLanguageVariant - Default variant code, if false, the default will be the language code.
 * $wgDefaultRobotPolicy - Allows specifying the default robot policy for all pages on the wiki
 * $wgDefaultSkin - The default skin for new users.
 * $wgDefaultUserOptions - Default user preferences.
 * $wgDeletedDirectory - What directory to place deleted uploads in.
 * $wgDeleteRevisionsLimit - Integer of how many revisions an article must have before the bigdelete right is required to delete it.
 * $wgDeprecationReleaseLimit - Release limitation to  warnings.
 * $wgDevelopmentWarnings - Whether to throw PHP notices for some possible error conditions and for deprecated functions.
 * $wgDeviceDetectionClass - Name of the class used for mobile device detection.
 * $wgDiff - Path to the GNU diff utility.
 * $wgDiff3 - Path to the GNU diff3 utility.
 * $wgDirectoryMode - Default  permission value for newly created directories.
 * $wgDisableAnonTalk - Disable talk pages for anonymous users (not logged in).
 * $wgDisableCookieCheck - Disables session cookies
 * $wgDisableCounters - Disable page view counters.
 * $wgDisabledActions - Array of disabled article actions, e.g. view, edit, dublincore, delete, etc.
 * $wgDisabledVariants - Disabled variants for language variant conversion.
 * $wgDisableHardRedirects - Disable redirects to special pages and interwiki redirects, which use a 302 and have no "redirected from" link.
 * $wgDisableInternalSearch - Disable internal search so that extensions can implement it.
 * $wgDisableLangConversion - Whether to enable language variant conversion.
 * $wgDisableOutputCompression - Disable output compression (compression enabled by default if zlib is available).
 * $wgDisableQueryPages - Disable all query pages if miser mode is on, not just some.
 * $wgDisableQueryPageUpdate - Array of special pages that should not be updated.
 * $wgDisableSearchContext - Setting this 'false' enables display of additional information on specific date/page revisions in search results.
 * $wgDisableSearchUpdate - If you've disabled search semi-permanently, this also disables updates to the table.
 * $wgDisableTextSearch - Disables full text search.
 * $wgDisableTitleConversion - Whether to enable language variant conversion for links.
 * $wgDisableUploadScriptChecks - Whether to disable the upload system's checks for HTML/JavaScript.
 * $wgDjvuDump - Path to the djvudump executable.
 * $wgDjvuOutputExtension - File extension for the DjVu post processor output.
 * $wgDjvuPostProcessor - Path of the DjVu post-processor.
 * $wgDjvuRenderer - Path of the ddjvu DjVu renderer.
 * $wgDjvuToXML - Path of the djvutoxml executable.
 * $wgDjvuTxt - Path of the djvutxt DjVu text extraction utility.
 * $wgDnsBlacklistUrls - List of DNS blacklists to use, if  is true.
 * $wgDocType - The doc type to use in the   declaration.
 * $wgDTD - Specifies the DTD in the DOCTYPE declaration for page output.
 * $wgDummyLanguageCodes - List of language codes that have been renamed to new (correct) codes, or don't correspond to an actual interface language.

E

 * $wgEditEncoding - Characters not explicitly converted by output encoding
 * $wgEdititis - Display user edit counts in various prominent places.
 * $wgEditPageFrameOptions - Control framing of wiki pages globally.
 * $wgEmailAuthentication - Set to true to enable email authentication (confirmation) for this wiki. Except for password reminder emails, email functions only work for authenticated email addresses.
 * $wgEmailConfirmToEdit - Require users to confirm email address before they can edit, true to enable.
 * $wgEmergencyContact - Site admin email address
 * $wgEnableAPI - Enable direct access to the data API through.
 * $wgEnableAutoRotation - Whether to enable image auto-rotation based on EXIF information
 * $wgEnableCanonicalServerLink - Output a  tag on every page indicating the canonical server which should be used, i.e.   or.
 * $wgEnableCreativeCommonsRdf - Include Creative Commons licensing information in page output (in RDF format)
 * $wgEnableDnsBlacklist - Whether to use DNS blacklists in  to check for open proxies.
 * $wgEnableDublinCoreRdf -
 * $wgEnableImageWhitelist - Enable an on-wiki image whitelist at MediaWiki:External image whitelist if $wgAllowExternalImages is false.
 * $wgEnableJavaScriptTest - Allows running of JavaScript test suites via Special:JavaScriptTest (such as QUnit).
 * $wgEnableMWSuggest - Enable suggestions while typing in search boxes.
 * $wgEnableNewpagesUserFilter - Enable user search in Special:Newpages.
 * $wgEnableOpenSearchSuggest - Enable OpenSearch suggestions requested by MediaWiki.
 * $wgEnableParserCache - Keep parsed pages in a cache (objectcache table, turck, or memcached) to speed up output of the same page viewed by another user with the same options.
 * $wgEnableParserLimitReporting - Controls whether the NewPP limit report is output in a HTML comment.
 * $wgEnableProfileInfo - Controls the availability of profileinfo.php.
 * $wgEnableScaryTranscluding - Enable scary transclusion (transcluding from another wiki)
 * $wgEnableSearchContributorsByIP - Whether searching for an IP address will be redirected to that IP's contributions page.
 * $wgEnableSelenium - Enable selenium tests.
 * $wgEnableSidebarCache - If true, cache the sidebar navigation links.
 * $wgEnableSorbs - Use http.dnsbl.sorbs.net to check for open proxies.
 * $wgEnableTooltipsAndAccesskeys - Whether to enable application of access keys and tooltips
 * $wgEnableUploads - Allow images and other files to be uploaded through the wiki.
 * $wgEnableUserEmail - Set to true to enable user-to-user email.
 * $wgEnableWriteAPI - Allow the API to be used to perform write operations (page edits, rollback, etc.) when an authorized user accesses it.
 * $wgExperimentalHtmlIds - Should we allow a broader set of characters in id attributes, per HTML5?
 * $wgEnotifFromEditor - Whether to make email notifications appear to come from the user who makes the edit
 * $wgEnotifImpersonal - Send a generic mail instead of a personalised mail for each user.
 * $wgEnotifMaxRecips - Maximum number of users to mail at once when using impersonal mail.
 * $wgEnotifMinorEdits - Email notifications also for "minor edits" (user preference is shown and user needs to opt-in)
 * $wgEnotifRevealEditorAddress - Set to true to insert the page editor's email address into the email notifications Reply-To address
 * $wgEnotifUseJobQ - Send mails via the job queue.
 * $wgEnotifUserTalk - Email notifications can be sent for first change on a user_talk page (user preference is shown and user needs to opt-in)
 * $wgEnotifWatchlist - Email notifications can be sent for the first change on watched pages (user preference is shown and user needs to opt-in)
 * $wgExceptionHooks - Hooks that are used for outputting exceptions.
 * $wgExemptFromUserRobotsControl - An array of namespace keys in which the /  magic words will not function.
 * $wgExiv2Command - Path to the exiv2 executable.
 * $wgExpensiveParserFunctionLimit - Maximum number of calls per parse to expensive parser functions such as PAGESINCATEGORY.
 * $wgExportAllowAll - Whether to allow exporting the entire wiki into a single file.
 * $wgExportAllowHistory - Enable the full-history option on Special:Export.
 * $wgExportAllowListContributors - Whether to allow to list all contributors while exporting a page.
 * $wgExportFromNamespaces - Whether to allow the "export all pages in namespace" option.
 * $wgExportMaxHistory - Special:Export requests for history of pages with more revisions than this will be rejected.
 * $wgExportMaxLinkDepth - Maximum value of the "pagelink-depth" parameter in Special:Export.
 * $wgExtensionAssetsPath - URL to extensions directory.
 * $wgExtensionCredits - Global list of extension credits
 * $wgExtensionFunctions - A list of callback functions which are called once MediaWiki is fully initialised.
 * $wgExtensionMessagesFiles - Extension messages files.
 * $wgExtensionsDirectory - Filesystem extensions directory.
 * $wgExternalAuthConf - Configuration for the external authentication.
 * $wgExternalAuthType - Use some particular type of external authentication.
 * $wgExternalDiffEngine - Name of the external diff engine to use.
 * $wgExternalLinkTarget - Set a default target for external links.
 * $wgExternalServers - An array of external MySQL servers.
 * $wgExternalStores - External stores allow including content from non-database sources following URL links.
 * $wgExtNewFields - Extension defined fields to be added to existing tables
 * $wgExtNewIndexes - Extension defined indexes to be added to existing tables
 * $wgExtNewTables - Extension Defined tables to be added on schema change
 * $wgExtPGAlteredFields - Extension defined columns to be altered in tables
 * $wgExtPGNewFields - Extension defined fields to be added to existing tables
 * $wgExtraGenderNamespaces - Same as $wgExtraNamespaces, but for namespaces with gender distinction.
 * $wgExtraInterlanguageLinkPrefixes - Array of interwiki prefixes to be treated as language links.
 * $wgExtraLanguageNames - List of language names or overrides for default names in Names.php.
 * $wgExtraNamespaces - Additional namespaces.
 * $wgExtraRandompageSQL - Filter for Special:Randompage. Part of a WHERE clause.
 * Manual:$wgExtraSignatureNamespaces - Controls in which subject (non-talk) namespaces the "Signature" button on the edit toolbar will be displayed.
 * $wgExtraSubtitle - The subtitle to appear under every title.

F

 * $wgFavicon - The URL of the site favicon.
 * $wgFeed - Toggle syndication feeds (RSS, Atom e.g. Recentchanges, Newpages) on and off.
 * $wgFeedCacheTimeout - Minimum timeout for cached Recentchanges feed, in seconds.
 * $wgFeedClasses - Available feeds objects.
 * $wgFeedDiffCutoff - When generating Recentchanges RSS/Atom feed, diffs will not be generated for pages larger than this size.
 * $wgFeedLimit - Set maximum number of results to return in syndication feeds (RSS, Atom) for eg Recentchanges, Newpages.
 * $wgFetchCommonsDescriptions - Whether to fetch commons image description pages and display them on the local wiki.
 * $wgFileBackends - File backend structure configuration.
 * $wgFileBlacklist - Files with these extensions will never be allowed as uploads.
 * $wgFileCacheDepth - Depth of subdirectory hierarchy under $wgFileCacheDirectory.
 * $wgFileCacheDirectory - Directory where the cached pages will be saved when using server-side caching.
 * $wgFileExtensions - This is the list of preferred extensions for uploading files. Uploading files with extensions not in this list will trigger a warning.
 * $wgFileStore - File storage paths; currently used only for deleted files.
 * $wgFilterCallback - Similarly (to $wgSpamRegex) if this function returns true
 * $wgFilterLogTypes - Show/hide links on Special:Log will be shown for these log types.
 * $wgFixArabicUnicode - Set this to true to clean up archaic Unicode sequences in Arabic text.
 * $wgFixDoubleRedirects - Fix double redirects after a page move.
 * $wgFixMalayalamUnicode - Set this to true to clean up archaic Unicode sequences in Malayalam text.
 * $wgFooterIcons - Abstract list of footer icons for skins in place of old copyrightico and poweredbyico code
 * $wgForcedRawSMaxage - Default maximum age (in seconds) for raw CSS/JavaScript accesses.
 * $wgForceUIMsgAsContentMsg - Array of UI messages that should be treated as content messages.
 * $wgForeignFileRepos - An array of repository structure for foreign repositories.

G

 * $wgGalleryOptions - Default settings for the &lt;gallery> tag.
 * $wgGenerateThumbnailOnParse - Allow thumbnail rendering on page view.
 * $wgGitBin - Path to the git binary.
 * $wgGitRepositoryViewers - Map of Git repository URLs to their gitweb interface URLs
 * $wgGoToEdit - Go button goes straight to the edit screen if the article doesn't exist.
 * $wgGrammarForms - Used for  parser function.
 * $wgGroupPermissions - Use this to set access rights for groups and users in these groups.
 * $wgGroupsAddToSelf - Use this to allow users to add themselves to specified groups via Special:Userrights.
 * $wgGroupsRemoveFromSelf - Use this to allow users to remove themselves from specified groups via Special:Userrights.

H

 * $wgHandheldForIPhone - Apply "screen" and "handheld" media also apply to the iPhone/iPod Touch Mobile Safari.
 * $wgHandheldStyle - Style for media="handheld".
 * $wgHashedSharedUploadDirectory - Whether to hash the shared upload directory.
 * $wgHashedUploadDirectory - If true, uses the /a/ab/foo.jpg directory structure.
 * $wgHiddenPrefs - Disable certain user preferences.
 * $wgHideInterlanguageLinks - Hide interlanguage links from the sidebar.
 * $wgHideUserContribLimit - The maximum number of edits a user can have and can still be hidden by users with the  permission.
 * $wgHipHopBuildDirectory - The build directory for HipHop compilation.
 * $wgHipHopBuildType - The HipHop build type.
 * $wgHipHopCompilerProcs - Number of parallel processes to use during HipHop compilation.
 * $wgHitcounterUpdateFreq - Sets how often page counters should be updated.
 * $wgHooks - Global list of hooks.
 * $wgHTCPMulticastAddress - What address to send udp HTCP purge packets if being used
 * $wgHTCPMulticastRouting - Renamed to  in MediaWiki 1.24
 * $wgHTCPMulticastTTL - HTCP multicast purging - time to live
 * $wgHTCPPort - Port for HTCP multicast purging
 * $wgHTCPRouting - Routing configuration for HTCP multicast purging.
 * $wgHtml5 - Whether to output an HTML 5 doctype.
 * $wgHtml5Version - Defines the value of the version attribute in the  tag, if any.
 * $wgHTMLFormAllowTableFormat - Allow form components to render tables.
 * $wgHTTPConnectTimeout - Timeout for connections done internally (in seconds)
 * $wgHttpOnlyBlacklist - User agent blacklist for HttpOnly mode.
 * $wgHTTPProxy - Proxy to use for cURL requests
 * $wgHTTPTimeout - Timeout for HTTP requests done via cURL.

I

 * $wgIgnoreImageErrors - If true, inline scaled images will still produce  tags ready for output instead of showing an error message.
 * $wgIllegalFileChars - Override the default list of illegal characters in file names.
 * $wgImageLimits - A list of user-selectable limits for the image thumbnail size on image description pages.
 * $wgImageMagickConvertCommand - The command used to invoke ImageMagick.
 * $wgImageMagickIdentifyCommand - The identify command shipped with ImageMagick
 * $wgImageMagickTempDir - Temporary directory used for ImageMagick.
 * $wgImgAuthDetails - Display reason access to uploaded file was denied to users (img_auth only)
 * $wgImgAuthPublicTest - Test to see if img_auth set up correctly (img_auth only)
 * $wgImplicitGroups - Groups that aren't shown on Special:Listusers or somewhere else
 * $wgImportSources - List of interwiki prefixes for wikis we'll accept as sources for Special:Import (for sysops and users given appropriate permissions).
 * $wgImportTargetNamespace - Optional default target namespace for interwiki imports.
 * $wgIncludeLegacyJavaScript - Whether to include the mediawiki.legacy JavaScript library (old wikibits.js), and its dependencies.
 * $wgInternalServer - Internal server name as known to Squid, if different than.
 * $wgInterwikiCache - Set to a file path to enable the CDB interwiki cache.
 * $wgInterwikiExpiry - Expiry time for memcached cache of interwiki table.
 * $wgInterwikiFallbackSite - Used by maintenance scripts to dump interwiki table
 * $wgInterwikiMagic - Treat language links as magic connectors, not inline links.
 * $wgInterwikiScopes - Used by  to retrieve from interwiki database file
 * $wgInvalidateCacheOnLocalSettingsChange - Setting this to true will invalidate all cached pages whenever LocalSettings.php is changed
 * $wgInvalidPasswordReset - Specifies if users should be sent to a password-reset form on login in case of an inadequate password.
 * $wgInvalidRedirectTargets - Array of invalid page redirect targets.
 * $wgInvalidUsernameCharacters - Characters to prevent during new account creations.
 * $IP - The full path to the installation directory.

J

 * $wgJavaScriptTestConfig - Configuration for javascript testing.
 * $wgJobBackoffThrottling - Number of times work items of a job type can be run per second.
 * $wgJobClasses - Maps jobs to their handling classes.
 * $wgJobRunRate - Number of jobs to perform per request.
 * $wgJobTypesExcludedFromDefaultQueue - Jobs that must be explicitly requested, i.e. aren't run by job runners unless special flags are set.
 * $wgJpegTran - Path to jpegtran, for lossless JPEG rotation.
 * $wgJsMimeType - Media type (MIME type) to use for JavaScript scripts.

L

 * $wgLanguageCode - Site language code. Should be one of the ./language/Language(.*).php files.
 * $wgLanguageConverterCacheType - The cache type for storing language conversion tables.
 * $wgLBFactoryConf - Load balancer factory configuration.
 * $wgLegacyEncoding - Set this to the character set, which you used before you updated to MediaWiki 1.5 (eg 'ISO-8859-1'). MediaWiki will then perform a temporary character set conversion when loading old revisions, which are not marked with "utf-8" flag (revisions created with MediaWiki 1.4 and earlier).
 * $wgLegacyJavaScriptGlobals - Whether or not to assign configuration variables to the global window object.
 * $wgLegacySchemaConversion - Option to speed up the conversion step for large sites when migrating the schema from 1.4 to 1.5
 * $wgLegalTitleChars - Override the default list of illegal characters in page titles.
 * $wgLicenseTerms - Array of metadata terms.
 * $wgLinkHolderBatchSize - LinkHolderArray batch size.
 * $wgLoadFileinfoExtension - Switch for loading the FileInfo extension by PECL at runtime.
 * $wgLoadScript - The URL path to load.php.
 * $wgLocalDatabases - Other wikis on this site, can be administered from a single developer account.
 * $wgLocalFileRepo - A single repository structure for the local repository.
 * $wgLocalInterwiki -
 * $wgLocalInterwikis - Array of interwiki prefixes for this wiki.
 * $wgLocalisationCacheConf - Localisation cache configuration.
 * $wgLocalMessageCacheSerialized - Defines format of local cache : true - Serialized object, false - PHP source file (Warning - security risk)
 * $wgLocalStylePath - Same as, but shouldn't point to an external domain.
 * $wgLocaltimezone - Fake out the timezone that the server thinks it's in.
 * $wgLocalTZoffset - Add a distance to the server timezone in Minutes.
 * $wgLockManagers - Array of configuration arrays for each lock manager.
 * $wgLogActions - Lists the message key string for formatting individual events of each type and action when listed in the logs.
 * $wgLogActionsHandlers - Same as, but values are functions callbacks.
 * $wgLogExceptionBacktrace - Whether to send the exception backtrace to the error log.
 * $wgLogHeaders - Lists the message key string for descriptive text to be shown at the top of each log type.
 * $wgLoginLanguageSelector - Show a bar of language selection links in the user login and user registration forms.
 * $wgLogNames - Lists the message key string for each log type.
 * $wgLogo - The URL of the site logo.
 * $wgLogoHD - URLs for HD versions of the site logo.
 * $wgLogRestrictions - Restricts log access to those who have a certain right.
 * $wgLogTypes - List of log types.

M

 * $wgMainCacheType - Object cache setting
 * $wgMaintenanceScripts - Array for extensions to register their maintenance scripts with the system.
 * $wgMasterWaitTimeout - How long to wait for a slave to catch up to the master.
 * All Math-related settings were removed from MediaWiki core in version 1.18. See Extension:Math.
 * $wgMaxAnimatedGifArea - Force thumbnailing of animated GIFs above this size to a single frame instead of an animated thumbnail.
 * $wgMaxArticleSize - Maximum article size in kilobytes.
 * $wgMaxCredits - Set this to the number of authors that you want to be credited below an article text.
 * $wgMaxGeneratedPPNodeCount - A complexity limit on template expansion: the maximum number of nodes generated by
 * $wgMaxImageArea - Don't thumbnail an image if it will use too much working memory.
 * $wgMaximumMovedPages - Maximum number of pages to move at once when moving subpages with a page.
 * $wgMaxMsgCacheEntrySize - Maximum entry size in the message cache, in bytes.
 * $wgMaxNameChars - Maximum number of bytes in username.
 * $wgMaxPPExpandDepth - Stack depth limit for expansion with the preprocessor.
 * $wgMaxPPNodeCount - A complexity limit on template expansion.
 * $wgMaxPPNodeCount - A complexity limit on template expansion: the maximum number of nodes visited by
 * $wgMaxRedirectLinksRetrieved - Maximum number of links to a redirect page listed on Special:Whatlinkshere/RedirectDestination.
 * $wgMaxShellFileSize - Maximum file size created by shell processes under linux, in KB.
 * $wgMaxShellMemory - Maximum amount of virtual memory available to shell processes under Linux, in KB.
 * $wgMaxShellTime - Maximum CPU time in seconds for shell processes under Linux.
 * $wgMaxShellWallClockTime - Limit shell commands duration using real time.
 * $wgMaxSigChars - Maximum wiki code length for customized signatures.
 * $wgMaxTocLevel - Maximum indent level of toc.
 * $wgMaxUploadSize - Maximum size of uploaded files (in bytes)
 * $wgMediaHandlers - Plugins for media file type handling.
 * $wgMemCachedDebug - Will be set to false in Setup.php, if the server isn't working.
 * $wgMemCachedPersistent - Whether to use persistent connections to Memcached servers.
 * $wgMemCachedServers - Memcached servers
 * $wgMemCachedTimeout - Server connection timeout in microseconds.
 * $wgMemoryLimit - The minimum amount of memory that MediaWiki "needs"; MediaWiki will try to raise PHP's memory limit if it's below this amount.
 * $wgMessageCacheType - Message cache setting
 * $wgMessagesDirs - Extension messages directories.
 * $wgMetaNamespace - Name used for the project namespace.
 * $wgMetaNamespaceTalk - Name of the project talk namespace.
 * $wgMimeDetectorCommand - Sets an external MIME detector program.
 * $wgMimeInfoFile - Sets the MIME type info file to be used by.
 * $wgMimeType - The type to send in the  header.
 * $wgMimeTypeBlacklist - MIME types to disallow if is enabled.
 * $wgMimeTypeFile - Sets the MIME type definition file to be used by.
 * $wgMinimalPasswordLength - Specifies the minimal length of a user password.
 * $wgMinUploadChunkSize - Minimum upload chunk size, in bytes.
 * $wgMiserMode - Enable/disable database-intensive features
 * $wgMsgCacheExpiry - When a message in cache expires (in seconds).
 * $wgMWSuggestTemplate - Template for internal MediaWiki suggestion engine.

N

 * $wgNamespaceAliases - Provide additional names for namespaces.
 * $wgNamespaceContentModels - Content types defined for a given namespace
 * $wgNamespaceProtection - Which namespaces can be edited by whom?
 * $wgNamespaceRobotPolicies - Allow customisation of robot policies on a per-namespace basis.
 * $wgNamespacesToBeSearchedDefault - Which namespaces should be searched?
 * $wgNamespacesToBeSearchedHelp - Namespaces to be searched when user clicks the "Help" tab on Special:Search
 * $wgNamespacesWithSubpages - Which namespaces should support subpages?
 * $wgNewPasswordExpiry - The time, in seconds, after which an emailed temporary password expires.
 * $wgNewUserLog - Whether to maintain a log of newusers at Special:Log/newusers.
 * $wgNoFollowDomainExceptions - External links to these domain names (or any subdomains) will not be set to.
 * $wgNoFollowLinks - If true, external URL links in wiki text will be given the  attribute.
 * $wgNoFollowNsExceptions - Namespaces in which $wgNoFollowLinks doesn't apply.
 * $wgNonincludableNamespaces - Use this to deny inclusion of pages from specific namespaces.
 * $wgNoReplyAddress - Reply-to address for automatically generated emails.

O

 * $wgObjectCaches - Advanced object cache configuration.
 * $wgObjectCacheSessionExpiry - The expiry time to use for session storage when  is enabled, in seconds.
 * $wgOldChangeTagsIndex - Use old names for change_tags indices.
 * $wgOpenSearchDefaultLimit - Integer defining default number of entries to show on OpenSearch call.
 * $wgOpenSearchTemplate - Template for OpenSearch suggestions.
 * $wgOverrideHostname - Override server hostname detection with a hardcoded value.
 * $wgOverrideSiteFeed - Override the site's default rss/atom feed that appears on every page.

P

 * $wgPageInfoTransclusionLimit - Limit template transclusion on InfoAction
 * $wgPagePropLinkInvalidations - Page property link table invalidation lists.
 * $wgPagePropsHaveSortkey - Set to false if the  table doesn't have a   column
 * $wgPageShowWatchingUsers - Show watching users in Page views.
 * $wgParserCacheExpireTime - Expiration time (in seconds) of cached parser information
 * $wgParserCacheType - Parser cache setting
 * $wgParserConf - Parser configuration.
 * $wgParserOutputHooks - Parser output hooks.
 * $wgParserTestFiles - Parser test suite files to be run by parserTests.php.
 * $wgParserTestRemote - Specifies target CodeReview installation to send test result data from "parserTests.php --upload".
 * $wgPasswordAttemptThrottle - Limit password attempts per IP per address.
 * $wgPasswordConfig - Configuration for built-in password types.
 * $wgPasswordDefault - Default password type to use when hashing user passwords.
 * $wgPasswordExpirationDays - The number of days that a user's password is good for.
 * $wgPasswordExpireGrace - The number of seconds after a user's password expires during which they can log in without a password change.
 * $wgPasswordReminderResendTime - Minimum time, in hours, which must elapse between password reminder emails.
 * $wgPasswordResetRoutes - Whether to allow password resets identified by various bits of data.
 * $wgPasswordSalt - For compatibility with old installations set to false.
 * $wgPasswordSender - Password reminder email address.
 * $wgPasswordSenderName - Password reminder ($wgPasswordSender) name.
 * $wgPhpCli - Executable name of PHP cli client (php/php5).
 * $wgPoolCounterConf - Configuration for processing pool control.
 * $wgPreloadJavaScriptMwUtil - Whether to preload the mediawiki.util module as blocking module in the top queue.
 * $wgPreprocessorCacheThreshold - Preprocessor caching threshold.
 * $wgPreviewOnOpenNamespaces - Namespaces where preview-on-first-edit is forced.
 * $wgProfileCallTree - If true, print a raw call tree instead of per-function report
 * $wgProfileLimit - Only record profiling info for pages that took longer than this number of seconds to load.
 * $wgProfileOnly - Don't put non-profiling info into log file
 * $wgProfilePerHost - Should application server host be put into profiling table?
 * $wgProfileToDatabase - Log sums from profiling into "profiling" table in db.
 * $wgProxyList - Big list of banned IP addresses.
 * $wgProxyMemcExpiry - Expiration time for cached proxy IPs.
 * $wgProxyPorts - Ports we want to scan for a proxy.
 * $wgProxyScriptPath - Script used to scan for proxies.
 * $wgProxyWhitelist - Proxy whitelist, list of addresses that are assumed to be non-proxy despite what the other methods might say.
 * $wgPutIPinRC - Log IP addresses in the recentchanges table.

Q

 * $wgQueryCacheLimit - Number of rows to cache in 'querycache' table when miser mode is on.
 * $wgQueryPageDefaultLimit - Integer defining default number of entries to show on query pages

R

 * $wgRateLimitLog - Set to a filename to log rate limiter hits.
 * $wgRateLimits - Simple rate limiter options to brake edit floods.
 * $wgRateLimitsExcludedIPs - Array of IPs which should never trigger the rate limiter.
 * $wgRawHtml - Allow raw, unchecked HTML in ... sections.
 * $wgRC2UDPAddress - Address used when sending RC updates via UDP.
 * $wgRC2UDPInterwikiPrefix - Whether to prefixes the page name used in the RC feed.
 * $wgRC2UDPOmitBots - Omit bot edits from UDP output
 * $wgRC2UDPPort - Port used when sending RC updates via UDP.
 * $wgRC2UDPPrefix - Prefix used when sending RC updates via UDP.
 * $wgRCChangedSizeThreshold - Highlight character count difference lower than this.
 * $wgRCEngines - Configuration for RC feed protocol engines
 * $wgRCFilterByAge - Filter $wgRCLinkDays by $wgRCMaxAge to avoid showing links for numbers higher than what will be stored.
 * $wgRCLinkDays - List days options to list in the Special:Recentchanges and Special:Recentchangeslinked pages.
 * $wgRCLinkLimits - List changes limits options to list in the Special:Recentchanges and Special:Recentchangeslinked pages.
 * $wgRCFeeds - Configuration for sending RC updates
 * $wgRCMaxAge - Items in the recentchanges table are periodically purged; entries older than this many seconds will go.
 * $wgRCShowChangedSize - Show the amount of changed characters in recent changes.
 * $wgRCShowWatchingUsers - Show watching users in recent changes, watchlist and page history views.
 * $wgReadOnly - Disallows editing, displaying the string given as the reason.
 * $wgReadOnlyFile - If this file is found, the database is locked for the reason given in the contents of the file.
 * $wgRecentChangesFlags - Flags (letter symbols) shown in recent changes and watchlist to indicate certain types of edits.
 * $wgRedirectOnLogin - Redirect users to a specific page on login.
 * $wgRedirectScript - The URL of redirect.php.
 * $wgRedirectSources - Regular expression to restrict URLs which will be displayed as "redirected from" links.
 * $wgRegisterInternalExternals - Whether to register external links pointing to the same server.
 * $wgRemoveGroups - Controls who can remove specifics groups using Special:Userrights.
 * $wgRenderHashAppend - Append a configured value to the parser cache and the sitenotice cache keys.
 * $wgRepositoryBaseUrl - Base URL for a repository wiki.
 * $wgRequirePasswordforEmailChange - Whether the user must enter their password to change their email address
 * $wgReservedUsernames - List of account names that cannot exist.
 * $wgResourceBasePath - Default 'remoteBasePath' value for resource loader modules.
 * $wgResourceLoaderDebug - The default debug mode (on/off) for ResourceLoader requests.
 * $wgResourceLoaderInlinePrivateModules - Whether to embed private modules inline with HTML output or to bypass caching and check the user parameter against.
 * $wgResourceLoaderLESSImportPaths - Default import paths for LESS modules.
 * $wgResourceLoaderMaxage - Maximum time in seconds to cache resources served by the resource loader.
 * $wgResourceLoaderMaxQueryLength - Maximum query string length for resource loader requests.
 * $wgResourceLoaderMinifierMaxLineLength - Maximum line length when minifying JavaScript.
 * $wgResourceLoaderMinifierStatementsOnOwnLine - Put each statement on its own line when minifying JavaScript.
 * $wgResourceLoaderSources - Foreign module sources registry.
 * $wgResourceLoaderUseESI - Enable embedding of certain resources using Edge Side Includes.
 * $wgResourceLoaderValidateJS - Whether to parse JavaScript module prior to minification to validate them.
 * $wgResourceLoaderValidateStaticJS - Whether to parse statically-sourced (file-backed) JavaScript resources prior to minification to validate them.
 * $wgResourceModules - Array of all extra defined modules that can later be loaded during the output.
 * $wgResourceModuleSkinStyles - Array of additional skin-provided stylesheets to existing ResourceLoader modules.
 * $wgResponsiveImages - Whether or not to output high-resolution images for high-DPI displays
 * $wgRestrictDisplayTitle - Restrict  to titles that normalize to the same  DB key.
 * $wgRestrictionLevels - Set of permission keys that can be selected on the 'page protection' page.
 * $wgRestrictionTypes - Actions that can be restricted.
 * $wgRevisionCacheExpiry - Cache extracted revision text in MemCached.
 * $wgRevokePermissions - Permission keys revoked from users in each group.
 * $wgRightsIcon - Copyright icon
 * $wgRightsPage - Page describing the site license
 * $wgRightsText - Text describing the site license
 * $wgRightsUrl - URL describing the site license
 * $wgRunJobsAsync - Controls whether on-request jobs are run asynchronously or synchronously.

S

 * $wgScript - The URL of index.php.
 * $wgScriptExtension - Extension to append to script names by default.
 * $wgScriptPath - The base URL path.
 * $wgSearchEverythingOnlyLoggedIn - If set to true the 'searcheverything' preference will be effective only for logged-in users.
 * $wgSearchForwardUrl - Set this to a URL to forward search requests to some external location.
 * $wgSearchHighlightBoundaries - Regexp to match word boundaries
 * $wgSearchSuggestCacheExpiry - Expiry time for search suggestion responses.
 * $wgSearchType - Type of search used for the wiki.
 * $wgSecretKey - This should always be customized to a secret, unique string in LocalSettings.php
 * $wgSecureLogin - Whether to let user authenticate using https when they come from http.
 * $wgSecureLoginDefaultHTTPS - Keep users logged in via HTTPS
 * $wgSeleniumConfigFile - Selenium configuration file.
 * $wgSeleniumTestConfigs - Configuration for selenium test suites.
 * $wgSemiprotectedRestrictionLevels - Restriction levels that are considered "semi-protected"
 * $wgSend404Code - Send 404 HTTP status for not found pages.
 * $wgServer - The base URL of the server.
 * $wgServerName - The name of the server without the protocol.
 * $wgSessionCacheType - The cache type for storing session data. Used if  is true.
 * $wgSessionHandler - Used to set php's session.save_handler.
 * $wgSessionName - Override to customize the session name.
 * $wgSessionsInMemcached - Store session data in the object cache, rather than on the filesystem.
 * $wgSessionsInObjectCache - Whether to store sessions in object cache.
 * $wgSharedDB - The name of the shared database.
 * $wgSharedPrefix - Table prefix to use on the shared database tables.
 * $wgSharedTables - List of database tables (without prefixes) to share when  is enabled.
 * $wgSharedThumbnailScriptPath - Same as, but for shared uploads.
 * $wgSharedUploadDBname - DB name with metadata about shared directory.
 * $wgSharedUploadDBprefix - DB prefix for shared image uploads
 * $wgSharedUploadDirectory - Path on the file system where shared uploads can be found.
 * $wgSharedUploadPath - Full path on the web server where shared uploads can be found.
 * $wgSharpenParameter - Sharpening parameter to ImageMagick.
 * $wgSharpenReductionThreshold - Reduction in linear dimensions below which sharpening will be enabled.
 * $wgShellCgroup - Limit shell commands memory using linux Cgroups.
 * $wgShellLocale - Locale for.
 * $wgShowArchiveThumbnails - Whether to show thumbnails for old images on the image description page.
 * $wgShowCreditsIfMax - If there are more than  authors, show   of them.
 * $wgShowDBErrorBacktrace - If true, show a backtrace for database errors.
 * $wgShowDebug - Show debug data at bottom of content area
 * $wgShowExceptionDetails - If set to true, uncaught exceptions will print a complete stack trace to output.
 * $wgShowEXIF - Show EXIF data at the end of file description pages.
 * $wgShowHostnames - If set to true, exposes host names through API and HTML comments.
 * $wgShowIPinHeader - Show the IP in the user bar for anonymous users.
 * $wgShowRollbackEditCount - Maximum number to count when a rollback link is shown
 * $wgShowSQLErrors - Whether to show SQL errors on "we're sorry, but there has been a database error" pages.
 * $wgShowUpdatedMarker - Show new changes: bold in watchlist, with "updated since my last visit" in history.
 * $wgSidebarCacheExpiry - Expiry time for the sidebar cache, in seconds.
 * $wgSitemapNamespaces - Array of namespaces to generate a sitemap or false for all namespaces.
 * $wgSitemapNamespacesPriorities - Custom namespace priorities for sitemaps.
 * $wgSitename - The name of the site.
 * $wgSiteNotice - A message to be displayed at the top of every page.
 * $wgSiteStatsAsyncFactor - Sets how often site statistics should be updated.
 * $wgSiteSupportPage - The title of the support page in your wiki.
 * $wgSkipSkin - Use  instead.
 * $wgSkipSkins - Specify the name of skins that should not be presented in the list of available skins.
 * $wgSlaveLagCritical - If lag is higher than this value, show a more obvious warning than.
 * $wgSlaveLagWarning - If lag is higher than this value, show a warning in some special pages (like watchlist).
 * $wgSMTP - For using a direct (authenticated) SMTP server connection.
 * $wgSorbsUrl - URL to the Sorbs blacklist.
 * $wgSortSpecialPages - Whether or not to sort special pages in Special:SpecialPages.
 * $wgSpamRegex - A regular expression pattern which stops a page from being saved.
 * $wgSpecialPageCacheUpdates - Additional functions to be performed with updateSpecialPages.php.
 * $wgSpecialPageGroups - List of special pages, followed by what subtitle they should go under at Special:SpecialPages.
 * $wgSpecialPages - A list of custom special pages.
 * $wgSpecialVersionShowHooks - Whether to show the contents of $wgHooks in Special:Version.
 * $wgSQLiteDataDir - To override default SQLite data directory.
 * $wgSQLMode - SQL mode
 * $wgSquidMaxage - Cache timeout for the squid.
 * $wgSquidServers - A list of proxy servers (IPs if possible) to purge on changes.
 * $wgSquidServersNoPurge - Same as, except they aren't purged.
 * $wgStatsMethod - Destination for  data
 * $wgStrictFileExtensions - Toggle whether users may upload files not covered by.
 * $wgStyleDirectory - The file system path to the skins directory.
 * $wgStylePath - The URL of the skins directory.
 * $wgStyleSheetPath - Do not set . Use  instead.
 * $wgStyleVersion - Appended in the query string of static CSS and JS to clear client side cache when changing this.
 * $wgSummarySpamRegex - Same as  except for edit summaries.
 * $wgSVGConverter - A key from  to use as converter.
 * $wgSVGConverterPath - Path to the SVG converter being used.
 * $wgSVGConverters - List of paths to Scalable Vector Graphics (SVG) converters.
 * $wgSVGMaxSize - Don't scale a SVG larger than this unless its native size is larger.
 * $wgSVGMetadataCutoff - Don't read SVG metadata beyond this point.
 * $wgSysopEmailBans - Allow sysops to ban users from accessing Special:Emailuser.

T

 * $wgThumbLimits - List of image thumbnail sizes users can pick from.
 * $wgThumbnailBuckets - List of intermediary thumbnail sizes to use to speed up thumbnail rendering.
 * $wgThumbnailEpoch - If rendered thumbnail files are older than this timestamp, they will be re-rendered on demand as if the file didn't already exist.
 * $wgThumbnailMinimumBucketDistance - Minimal distance between intermediary thumbnail size and target thumbnail size.
 * $wgThumbnailScriptPath - Path to, if you want thumbnail generation on the fly.
 * $wgThumbUpright - Scaling factor applied to width of images when parameter 'upright' is used.
 * $wgTidyBin - Should be set to the path of the tidy binary.
 * $wgTidyConf - Should be set to the path of the tidy configuration file.
 * $wgTidyInternal - Controls the use of the tidy extension to use an in-process tidy library instead of spawning a separate program.
 * $wgTidyOpts - Options passed to tidy on the command line.
 * $wgTiffThumbnailType - The format and MIME type to convert TIFF images to.
 * $wgTmpDirectory - The path of the temporary directory.
 * $wgTrackingCategories - The list of messages representing tracking categories which are listed at Special:TrackingCategories.
 * $wgTranscludeCacheExpiry - Expiry time for interwiki transclusion.
 * $wgTranslateNumerals - For Hindi and Arabic use local numerals instead of Western style (0-9) numerals in interface.
 * $wgTrivialMimeDetection - Switch for trivial MIME detection.
 * $wgTrustedMediaFormats - List of trusted media-types and MIME types.

U

 * $wgUDPProfilerHost - Host for UDP profiler.
 * $wgUDPProfilerPort - Port for UDP profiler.
 * $wgUniversalEditButton - Enable the UniversalEditButton for browsers that support it.
 * $wgUnwatchedPageSecret - If active watchers (per above) are this number or less, do not disclose it.
 * $wgUnwatchedPageThreshold - Allows users without the "unwatchedpages" user right to view the number of page watchers for a specified page via the "info" action if the number of watchers is above the specified threshold.
 * $wgUpdateCompatibleMetadata - Whether to automatically update the  field if it is outdated but compatible with the current version.
 * $wgUpdateRowsPerJob - Number of rows to update per job.
 * $wgUpdateRowsPerQuery - Number of rows to update per query.
 * $wgUpgradeKey - Password that controls access to web-based upgrades.
 * $wgUploadBaseUrl - The base URL for uploaded images if shared upload directory isn't to be used
 * $wgUploadDirectory - The file system path of the upload directory.
 * $wgUploadMaintenance - To disable file delete/restore temporarily.
 * $wgUploadMissingFileUrl - Point wikilinks to missing files ("red file links") to a custom URL.
 * $wgUploadNavigationUrl - Point the upload navigation link in the sidebar to a custom URL.
 * $wgUploadPath - The URL of the upload directory.
 * $wgUploadSizeWarning - Warn if uploaded files are larger than this.
 * $wgUploadStashMaxAge - The maximum age of temporary (incomplete) uploaded files.
 * $wgUploadStashScalerBaseUrl - To enable remote on-demand scaling, set this to the thumbnail base URL.
 * $wgUrlProtocols - Defines the protocols which are supported and translated in HTML by the mediawiki parser.
 * $wgUseAjax - Enable AJAX support.
 * $wgUseAutomaticEditSummaries - Whether MediaWiki should make automatic edit summaries.
 * $wgUseCategoryBrowser - Enable/Disable experimental dmoz-like category browsing.
 * $wgUseCombinedLoginLink - Login / create account link behavior when it's possible for anonymous users to create an account.
 * $wgUseCommaCount - Specifies the criteria used to define a 'valid article' when counting.
 * $wgUseCopyrightUpload - Set this to true if you want detailed copyright information forms on Upload.
 * $wgUseDatabaseMessages - Translation using MediaWiki: namespace.
 * $wgUseDumbLinkUpdate - Do  /  for link updates instead of incremental.
 * $wgUseDynamicDates - Enable to allow rewriting dates in page text.
 * $wgUseEnotif - Overall "use Enotif" setting
 * $wgUseESI - If you run Squid3 with ESI support, enable this.
 * $wgUseETag - Whether MediaWiki should send an ETag header.
 * $wgUseExternalEditor - Determine if users are allowed to edit using external editor interface.
 * $wgUseFileCache - This will cache static pages for non-logged-in users to reduce database traffic on public sites.
 * $wgUseGzip - Use GZip to store cached pages.
 * $wgUseImageMagick - Set to true to use ImageMagick for image resizing.
 * $wgUseImageResize - Whether to enable dynamic server-side image resizing (thumbnailing)
 * $wgUseInstantCommons - Enable the use of Wikimedia Commons as a shared repository
 * $wgUseLocalMessageCache - Make a local copy of the message cache, in addition to memcached.
 * $wgUseMediaWikiUIEverywhere - Applies MediaWiki UI wherever it can be supported.
 * $wgUseNPPatrol - Use new pages patrolling to check for vandalism
 * $wgUsePathInfo - Whether to use 'pretty' URLs.
 * $wgUsePrivateIPs - Whether private X-Forwarded-For IPs should be accepted
 * $wgUseRCPatrol - Use RC patrolling to check for vandalism
 * $wgUserEmailConfirmationTokenExpiry - The time, in seconds, after which a email address confirmation token expires.
 * $wgUserEmailUseReplyTo - Set to true to put the sending user's email in a Reply-To header instead of From.
 * $wgUserFallbackLanguages - maximum number of fallback languages per user
 * $wgUserrightsInterwikiDelimiter - Character used as the separator between username and database name on Special:UserRights.
 * $wgUsersNotifiedOnAllChanges - Array of usernames who will be sent a notification email for every change which occurs on a wiki.
 * $wgUseSharedUploads - Whether to look in a shared repository when a file is not found locally
 * $wgUseSiteCss - Use the site's Cascading Style Sheets (CSS)
 * $wgUseSiteJs - Use the site's JavaScript page
 * $wgUseSquid - Enable/disable Squid.
 * $wgUseTagFilter - Allow filtering by change tag in recentchanges, history, etc.
 * $wgUseTidy - Use tidy to make sure HTML output is sane.
 * $wgUseTrackbacks - Allow blog style trackbacks to be attached to articles
 * $wgUseTwoButtonsSearchForm - Sidebar's search form behavior.
 * $wgUseXVO - Send X-Vary-Options header for better caching (requires patched Squid).

V

 * $wgValidateAllHtml - Validate the overall output using tidy and refuse to display the page if it's not valid.
 * $wgValidSkinNames - List of valid skin names. Is used by skins to tell MediaWiki that they are available.
 * $wgVariantArticlePath - Used for links when having language's variants.
 * $wgVaryOnXFP - Whether to add X-Forwarded-Proto to the Vary and X-Vary-Options headers for API requests and RSS/Atom feeds.
 * $wgVectorCombineUserTalk - Appearance, in Vector, of user page and talk page labels in personal tools.
 * $wgVectorResponsive - Make Vector more responsive.
 * $wgVectorShowVariantName - Show the name of the current variant as a label in the variants drop-down menu.
 * $wgVectorUseIconWatch - Watch and unwatch as a star icon rather than a link (for Vector skin only).
 * $wgVectorUseSimpleSearch - Search form behavior for Vector skin only.
 * $wgVerifyMimeType - Determines if the MIME type of uploaded files should be checked.
 * $wgVersion - MediaWiki version number. You should not change this!

W

 * $wgWantedPagesThreshold - Minimum number of pages that must link to a page before it will appear on Special:Wantedpages.
 * $wgWatchersMaxAge - Page watchers inactive for more than this many seconds are considered inactive.
 * $wgWellFormedXml - Whether to try to make our HTML output well-formed XML.
 * $wgWhitelistRead - Pages anonymous user may see.
 * $wgWhitelistReadRegexp - Whitelists publicly readable titles with a regex.

X

 * $wgXhtmlDefaultNamespace - Namespace to use when outputting in XHTML mode.
 * $wgXhtmlNamespaces - Permit other namespaces in addition to the w3.org default.
 * $wgXMLMimeTypes - An array of XML MIME types we can detect via MimeMagic