Manual:Configuration settings

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

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


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

General Settings

 * $wgProto - The secure server prefix.
 * $wgServer - The base URL of the server.
 * $wgServerName - The name of the server without the protocol. (eg, en.wikipedia.org)
 * $wgSitename - The name of the site. Should be changed
 * $wgVersion - Contains the current version of MediaWiki, as displayed to the user.

Paths

 * $IP - The filesystem installation directory. Not in DefaultSettings.php.
 * $wgActionPaths - Paths for various user actions. Used to 'pretty' URLs.
 * $wgArticlePath - The URL template used to create article links.
 * $wgDiff3 - Path to the GNU diff3 utility.
 * $wgFavicon - The URL of the site favicon.
 * $wgHashedUploadDirectory - If true, use the /a/ab/foo.png directory structure.
 * $wgLogo - The URL of the site logo.
 * $wgMathDirectory - The file system path of the directory containing LaTeX math images.
 * $wgMathPath - The URL base of the directory containing LaTeX math images.
 * $wgRedirectScript - The URL of redirect.php, needed for backwards compatibility.
 * $wgScript - The URL of index.php.
 * $wgScriptPath - The base URL path.
 * $wgStockPath (deprecated) - For stock images that come with MediaWiki.
 * $wgStyleDirectory - The file system path to the skins directory.
 * $wgStylePath - The URL of the skins directory.
 * $wgStyleSheetDirectory (deprecated) - The file system path of the directory containing the stylesheets.
 * $wgStyleSheetPath - The URL of the directory containing the stylesheets.
 * $wgTmpDirectory - The URL of the temporary directory.
 * $wgUploadBaseUrl -
 * $wgUsePathInfo - Whether to use 'pretty' URLs.
 * $wgUploadDirectory - The file system path of the upload directory.
 * $wgUploadNavigationUrl - Point the upload navigation link to an external URL.
 * $wgUploadPath - The URL of the upload directory.
 * $wgVariantArticlePath - Used for interwiki links.

Email settings

 * $wgEmailAuthentication - Whether Email authentication (confirmation) is needed for that wiki for using any Email function (except password reminder which works independently from this setting)
 * $wgEmergencyContact - Site admin email address
 * $wgEnableEmail - Set to true to enable the e-mail basic features: Password reminders, etc.
 * $wgEnableUserEmail - Set to true to enable user-to-user e-mail.
 * Manual:$wgNoReplyAddress - Dummy address which should be accepted during mail send action.
 * $wgPasswordSender - Password reminder email address.
 * $wgSMTP - For using a direct (authenticated) SMTP server connection.

Email notification (Enotif) settings

 * $wgEnotifFromEditor - Email notifications appear to be coming from the page editor (not from Wiki server)
 * $wgEnotifMinorEdits - Email notifications also for "minor edits" (user preference is shown and user needs to opt-in)
 * $wgEnotifRevealEditorAddress - reply-to address of Email notifications may be filled with page editor's address (user preference is shown and user needs to opt-in)
 * $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)
 * $wgShowUpdatedMarker - Show "Updated (since my last visit)" marker in RC view, watchlist and history.

Database settings

 * $wgBufferSQLResults (deprecated) - Use buffered queries by default.
 * $wgCheckDBSchema
 * $wgDBClusterTimeout - When to give error messages.
 * $wgDBconnection -
 * $wgDBerrorLog - File to log MySQL errors to.
 * $wgDBloads (deprecated) - Database load balancer.
 * $wgDBminWordLen - Used to discard words that MySQL will not return any results for shorter values configure mysql directly.
 * $wgDBmwschema - Schema that Postgres stores the MediaWiki tables in. Defaults to 'mediawiki'
 * $wgDBmysql4 (deprecated) - Set to true to use enhanced fulltext search.
 * $wgDBmysql5 - Set to true to set MySQL connection into UTF-8 encoding
 * $wgDBname - Name of the database.
 * $wgDBpassword - The password for $wgDBuser.
 * $wgDBport - Database port.
 * $wgDBprefix - Table name prefix.
 * $wgDBschema - On some databases this allows separate logical namespace for application data.
 * $wgDBserver - Database host name or ip address.
 * $wgDBservers - Database load balancer.
 * $wgDBtransactions - Set to true if using InnoDB tables.
 * $wgDBts2schema - Schema that the Tsearch2 tables live in for Postgres. Defaults to 'public'
 * $wgDBtype - Type of database.
 * $wgDBuser - Database username.
 * $wgLocalDatabases - Other wikis on this site, can be administered from a single developer account.
 * $wgMasterWaitTimeout - How long to wait for a slave to catch up to the master.
 * $wgSearchType - Type of DB search used.
 * $wgSecondaryMessageDB - DB to fall back on if the message isn't in the main DB.
 * $wgSqlLogFile (deprecated)
 * $wgSqlTimeout (deprecated)
 * $wgExternalServers - An array of external MySQL servers.

Shared DB settings

 * $wgSharedDB - The name of the shared database (currently for shared user table only).

Sysop SQL queries
These settings are for sysops to make queries through Extension:Asksql.
 * [[Image:Attention niels epting.svg|18px]] Warning: Dangerous if not configured properly.


 * $wgAllowSysopQueries (deprecated) - Set to allow sysop queries.
 * $wgDBsqlpassword (deprecated) - The password for $wgDBsqluser.
 * $wgDBsqluser (deprecated) - The SQL user used for queries.

Localization

 * $wgAmericanDates - Enable for English module to print dates as eg 'May 12' instead of '12 May'.
 * $wgDisableLangConversion - Whether to enable language variant conversion.
 * $wgDocType - The doc type to use in the  declaration.
 * $wgDTD
 * $wgEditEncoding
 * $wgForceUIMsgAsContentMsg
 * $wgInputEncoding - The encoding of the input text.
 * $wgInterwikiMagic - Treat language links as magic connectors, not inline links.
 * $wgLanguageCode - Site language code. Should be one of the ./language/Language(.*).php files.
 * $wgLanguageFile (deprecated) - Filename of a language file generated by dumpMessages.php.
 * $wgLegacyEncoding - Set this to eg 'ISO-8859-1' to perform character set conversion when loading old revisions not marked with utf-8 flag.
 * $wgLocaltimezone - Fake out the timezone that the server thinks it's in.
 * $wgLocalTZoffset - Add a distance to the timezone of the server.
 * $wgLoginLanguageSelector - Show a bar of language selection links in the user login and user registration forms.
 * $wgMimeType - The type to send in the  header.
 * $wgMsgCacheExpiry - When a message in cache expires (in seconds).
 * $wgOutputEncoding - The encoding of the output text.
 * $wgPartialMessageCache (deprecated)
 * $wgTranslateNumerals - For Hindi and Arabic use local numerals instead of Western style (0-9) numerals in interface.
 * $wgUseDatabaseMessages - Translation using MediaWiki: namespace.
 * $wgUseDynamicDates - Enable to allow rewriting dates in page text. DOES NOT FORMAT CORRECTLY FOR MOST LANGUAGES.
 * $wgUseLatin1 (deprecated) - Enable ISO-8859-1 compatibility mode.
 * $wgUseZhdaemon - Whether to use zhdaemon to perform Chinese text processing.
 * $wgZhdaemonHost - The host which zhdaemon is on. This is only used if $wgUseZhdaemon is set.
 * $wgZhdaemonPort - The port on $wgZhdaemonHost which zhdaemon is on.

Debug/logging

 * $wgColorErrors - Whether to color command-line error messages.
 * $wgDebugComments - Include portions of log output in page HTML comment.
 * $wgDebugDumpSql
 * $wgDebugLogFile - The file name of the debug log, or empty if disabled. wfDebug appends to this file.
 * $wgDebugLogGroups - Selective debug logs on a group basis.
 * $wgDebugRawPage - Avoid overlapping debug entries by leaving out CSS.
 * $wgDebugRedirects
 * $wgIgnoreSQLErrors (deprecated) - Whether to disable automatic generation of "we're sorry, but there has been a database error" pages.
 * $wgLogQueries
 * $wgShowSQLErrors - Whether to show "We're sorry, but there has been a database error." pages.

Profiling

 * $wgDebugFunctionEntry - Output debug message on every wfProfileIn/wfProfileOut
 * $wgDebugProfiling - Detects non-matching wfProfileIn/wfProfileOut calls
 * $wgDebugSquid - Lots of debugging output from SquidUpdate.php
 * $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
 * $wgProfileOnly - Don't put non-profiling info into log file
 * $wgProfilePerHost - Should application server host be put into profiling table?
 * $wgProfilerType - If not empty, specifies profiler type to load.
 * $wgProfileSampleRate (deprecated) - Only profile every n requests when profiling is turned on
 * $wgProfileToCommentUser (deprecated) - Put profiling data in HTML comments in the output file, for a given user only.
 * $wgProfileToDatabase - Log sums from profiling into profiling table in db.
 * $wgProfiling (deprecated) - Enable for more detailed by-function times in debug log
 * $wgUDPProfilerHost - Host for UDP profiler.
 * $wgUDPProfilerPort - Port for UDP profiler.

Site customization
These are site-wide appearance settings.


 * $wgAjaxExportList - List of functions in  that are callable via
 * $wgAjaxSearch - Enable use of AJAX auto-suggestion for the search bar.
 * $wgAllowUserCss - Allow user Cascading Style Sheets (CSS)
 * $wgAllowUserJs - Allow user Javascript pages
 * $wgDefaultUserOptions - Settings added to this array will override the language globals for the user preferences used by anonymous visitors and newly created accounts.
 * $wgExtraSubtitle - The subtitle to appear under every title.
 * $wgHideInterlanguageLinks - Hide interlanguage links from the sidebar.
 * $wgNavigationLinks (deprecated) - Navigation links for the user sidebar.
 * $wgNoFollowLinks - If true, external URL links in wiki text will be given the  attribute.
 * $wgPageShowWatchingUsers - Show watching users in Page views.
 * $wgRestrictionLevels - Set of permission keys that can be selected on the 'page protection' page.
 * $wgSiteNotice - A message to be displayed at the top of every page.
 * $wgSiteSupportPage - A page where your users can donate.
 * $wgUrlProtocols - Defines the protocols which are supported and translated in HTML by the mediawiki parser.
 * $wgUseAjax - Enable use of AJAX features
 * $wgUseSiteCss - Use the site's Cascading Style Sheets (CSS).
 * $wgUseSiteJs - Use the site's Javascript page.

Namespaces

 * $wgContentNamespaces - Namespaces which are considered to contain real content, or articles
 * $wgExtraNamespaces - Additional namespaces.
 * $wgMetaNamespace - The name used for the meta-namespace.
 * $wgMetaNamespaceTalk - The name used for the meta-namespace talk pages.
 * $wgNamespaceAliases - override the default names for namespaces.
 * $wgNamespaceProtection - default protection levels for namespaces.
 * $wgNamespaceRobotPolicies
 * $wgNamespacesToBeSearchedDefault - Which namespaces should be searched?
 * $wgNamespacesWithSubpages - Which namespaces should support subpages?
 * $wgNoFollowNsExceptions - Namespaces where the nofollow setting ($wgNoFollowLinks) is overridden.
 * $wgNonincludableNamespaces - Pages in namespaces in this array can not be used as templates.

Per-page settings

 * $wgArticleRobotPolicies

See also Manual:Page customizations.

Skins

 * $wgDefaultSkin - The default skin.
 * $wgSkipSkin - Specify the name of a skin that should not be presented in the list of available skins.
 * $wgSkipSkins - More of the same as $wgSkipSkin.
 * $wgUsePHPTal (deprecated)
 * $wgValidSkinNames

Category

 * $wgUseCategoryMagic (deprecated) - Should the category pseudo-namespace be used?
 * $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.
 * $wgUseCategoryBrowser - Enable DMOZ-like category tree at the bottom of pages

Cache

 * $wgCachedMessageArrays - Directory for compiled constant message array databases.
 * $wgCacheEpoch - Set this to current time to invalidate all prior cached pages.
 * $wgCachePages - Allow client-side caching of pages
 * $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.
 * $wgEnableSidebarCache -
 * $wgFileCacheDirectory
 * $wgImageHtmlCacheExpiry (deprecated) - Set to a number of seconds to cache the HTML associated with an image.
 * $wgLocalMessageCache - Directory for local copy of message cache, for use in addition to memcached.
 * $wgLocalMessageCacheSerialized - Defines format of local cache.
 * $wgMainCacheType - Replaces $wgUseMemCached.
 * $wgMessageCacheType - Message cache setting.
 * $wgParserCacheType - Parser cache setting.
 * $wgThumbnailEpoch - If rendered thumbnail files are older than this timestamp, they will be rerendered on demand as if the file didn't already exist.
 * $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.
 * $wgUseWatchlistCache - Generate a watchlist once every hour or so.
 * $wgWLCacheTimeout - The hour or so mentioned above.

Persistent Link Cache

 * $wgCompressedPersistentLC (deprecated) - Use gzcompressed blobs.
 * $wgEnablePersistentLC (deprecated)

Memcached settings
Settings for configuring the Memcached memory-based object store (if you are using it) docs/memcached.txt has more details.
 * $wgUseMemCached (deprecated) - Use memcache, using the servers set in $wgMemCachedServers.
 * $wgLinkCacheMemcached - Cache links using object cache setting (memcache, Turck MMCache, eAccelerator, etc.)
 * $wgMemCachedDebug - Will be set to false in Setup.php, if the server isn't working.
 * $wgMemCachedPersistent
 * $wgMemCachedServers
 * $wgSessionsInMemcached
 * $wgUseEAccelShm - You can use this for persistent caching where your wiki runs on a single server. Use eAccelerator for shared memory.
 * $wgUseTurckShm (deprecated) - Use Turck MMCache shared memory.

Interwiki

 * $wgEnableScaryTranscluding - Enable scary transclusion (transcluding from another wiki)
 * $wgImportSources - List of interwiki prefixes for wikis we'll accept as sources for Special:Import (for sysops).
 * $wgInterwikiCache
 * $wgInterwikiExpiry - Expiry time for cache of interwiki table.
 * $wgInterwikiFallbackSite
 * $wgInterwikiScopes
 * $wgLocalInterwiki - The Interwiki prefix of this wiki. It should always be changed in LocalSettings.php.

Access
Wiki locking, user access options, blocking/banning, and some other related settings.


 * $wgAccountCreationThrottle - Number of accounts each IP address may create, 0 to disable. Requires memcached.
 * $wgAddGroups - Controls who can add specifics groups using Special:Userrights.
 * $wgAllowAnonymousMinor (deprecated) - Allow anonymous users to mark changes as 'minor'.
 * $wgAutoblockExpiry - Number of seconds before autoblock entries expire.
 * $wgBlockAllowsUTEdit - Allow blocked users to edit their talk pages.
 * $wgDefaultBlockExpiry (deprecated) - Default expiry time in strtotime format, or infinite for an infinite block.
 * $wgDisabledActions - Array of disabled article actions, e.g. view, edit, dublincore, delete, etc.
 * $wgEmailConfirmToEdit - Require users to confirm email address before they can edit, true to enable.
 * $wgGroupPermissions - Use this to set access rights for groups and users. See also Help:User rights
 * $wgPasswordSalt - For compatibility with old installations set to false.
 * $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.
 * $wgRemoveGroups - Controls who can remove specifics groups using Special:Userrights.
 * $wgSysopRangeBans - Allow sysops to ban IP ranges
 * $wgSysopUserBans - Allow sysops to ban logged-in users
 * $wgWhitelistAccount (deprecated) - Types of accounts that can create new users.
 * $wgWhitelistEdit (deprecated) - If true, users must login to edit. (versions 1.4 and previous)
 * $wgWhitelistRead - Pages anonymous user may see.

See Manual:Preventing_access for more methods and settings concerning access.

Rate limiter

 * $wgRateLimitLog - Set to a filename to log rate limiter hits.
 * $wgRateLimits - Simple rate limiter options to brake edit floods.
 * $wgRateLimitsExcludedGroups - Array of groups which should never trigger the rate limiter.

Proxies

 * $wgBlockOpenProxies - Automatic open proxy test on edit.
 * $wgEnableOpm (deprecated) - Use opm.blitzed.org to check for open proxies. Not yet actually used.
 * $wgEnableSorbs - Use http.dnsbl.sorbs.net to check for open proxies.
 * $wgProxyKey (deprecated) - Replaced by $wgSecretKey.
 * $wgProxyList - Big list of banned IP addresses. In the keys not the values.
 * $wgProxyMemcExpiry
 * $wgProxyPorts
 * $wgProxyScriptPath
 * $wgProxyWhitelist - Proxy whitelist, list of addresses that are assumed to be non-proxy despite what the other methods might say
 * $wgSecretKey - This should always be customised in LocalSettings.php

Squid

 * $wgInternalServer - Internal server name as known to Squid, if different.
 * $wgMaxSquidPurgeTitles - Maximum number of titles to purge in any one client operation
 * $wgSquidFastPurge (deprecated) - When purging, use persistent connections and don't wait for the response.
 * $wgSquidMaxage - Cache timeout for the squid.
 * $wgSquidServers - A list of proxy servers (ips if possible) to purge on changes.
 * $wgSquidServersNoPurge - Same as $wgSquidServers, except they aren't purged.
 * $wgUseESI - If you run Squid3 with ESI support, enable this.
 * $wgUseSquid - Enable/disable Squid.

Cookies

 * $wgCookieDomain - Set to set an explicit domain on the login cookies.
 * $wgCookieExpiration - Number of seconds before HTTP cookies expire.
 * $wgCookiePath
 * $wgCookieSecure - Whether cookies are secured.
 * $wgDisableCookieCheck
 * $wgSessionName - Override to customise the session name.

Reduction

 * $wgDisableAnonTalk - Disable talk pages for anonymous users (IPs).
 * $wgDisableCounters - Disable view counter shown in the footer of an article/page as: "This page has been accessed X times"
 * $wgDisableFuzzySearch (deprecated)
 * $wgDisableQueryPages - Disable all query pages if miser mode is on, not just some.
 * $wgDisableSearchContext
 * $wgDisableSearchUpdate - If you've disabled search semi-permanently, this also disables updates to the table.
 * $wgDisableTextSearch - Disables full text search (including title search).
 * $wgMiserMode - If true, disable database-intensive features
 * $wgUseDumbLinkUpdate - Do /  for link updates instead of incremental.
 * $wgWantedPagesThreshold - Minimum number of links required before a page is listed on Special:Wantedpages

Uploads
Uploads have to be specially set up to be secure.


 * $wgAjaxLicensePreview - Allow preview licences during upload via AJAX.
 * $wgAllowCopyUploads - allow uploads from URLs, not just local files
 * $wgCheckFileExtensions - This is a flag to determine whether or not to check file extensions on upload.
 * $wgEnableUploads - Enables uploads and shows link to upload page
 * $wgDisableUploads (deprecated) - Does opposite of $wgEnableUploads
 * $wgFileBlacklist - Files with these extensions will never be allowed as uploads.
 * $wgFileExtensions - This is the list of preferred extensions for uploading files. Uploading files with extensions not in this list will trigger a warning.
 * $wgRemoteUploads - Set to true to enable the upload link while local uploads are disabled.
 * $wgStrictFileExtensions - If this is turned off, users may override the warning for files not covered by $wgFileExtensions.
 * $wgUploadSizeWarning - Warn if uploaded files are larger than this.
 * $wgMaxUploadSize - Maximum size for file uploads.
 * $wgFileStore - Indicates where deleted images are to be stored, if undeletion enabled.
 * $wgSaveDeletedFiles (deprecated) - Indicates that deleted images are to be stored for later undeletion.
 * $wgHTTPTimeout - Timeout for HTTP requests done via CURL.
 * $wgHTTPProxy - Proxy to use for CURL requests.

Shared uploads

 * $wgCacheSharedUploads - Cache shared metadata in memcached.
 * $wgHashedSharedUploadDirectory - Whether to hash the shared upload directory.
 * $wgRepositoryBaseUrl - Base URL for a repository wiki.
 * $wgSharedLatin1 (deprecated) - set true if the repository uses latin1 filenames.
 * $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.
 * $wgUseSharedUploads - Whether to look in the shared repository if no file of the given name is found in the local repository (for [[Image:..]], [[Media:..]] links).
 * $wgFetchCommonsDescriptions - set this "true" if you want to integrate media-descriptions, stored in the commonswiki

MIME types

 * $wgLoadFileinfoExtension - Switch for loading the FileInfo extension by PECL at runtime.
 * $wgMimeDetectorCommand - Sets an external mime detector program.
 * $wgMimeInfoFile - Sets the mime type info file to use by MimeMagic.php.
 * $wgMimeTypeFile - Sets the mime type definition file to use by MimeMagic.php.
 * $wgTrivialMimeDetection - Switch for trivial mime detection. This is not a configuration setting, but a global state variable. It should be used solely by thumb.php!
 * $wgVerifyMimeType - Determines if the mime type of uploaded files should be checked
 * $wgMimeTypeBlacklist - Files with these mime types will never be allowed as uploads if $wgVerifyMimeType is enabled.

See also Manual:Mime type detection

Images
Set $wgUseImageMagick to true to use ImageMagick instead of the builtin functions.
 * $wgAllowTitlesInSVG - If true, will be allowed in files with an "image/svg" MIME type.
 * $wgGenerateThumbnailOnParse - Allow thumbnail rendering on page view.
 * $wgIgnoreImageErrors - If true, inline scaled images will still produce tags ready for output instead of showing an error message.
 * $wgImageLimits - Limit images on image description pages to a user-selectable limit.
 * $wgImageMagickConvertCommand - Set to the command used to evoke ImageMagick.
 * $wgMaxImageArea - Don't thumbnail an image if it will use too much working memory.
 * $wgSharedThumbnailScriptPath - Same as $wgThumbnailScriptPath, but for shared uploads.
 * $wgSVGConverter - A key from $wgSVGConverters to use as converter.
 * $wgSVGConverterPath - If not in the executable PATH, specify.
 * $wgSVGConverters - Scalable Vector Graphics (SVG) may be uploaded as images.
 * $wgThumbnailScriptPath - Give a path here to use thumb.php for thumbnail generation on client request, instead of generating them on render and outputting a static URL.
 * $wgThumbUpright - Adjust width of upright images when parameter 'upright' is used
 * $wgUseImageMagick - Resizing can be done using PHP's internal image libraries or using ImageMagick. The latter supports more file formats than PHP, which only supports PNG, GIF, JPG, XBM and WBMP.
 * $wgUseImageResize (deprecated) - Set $wgUseImageResize to true if you want to enable dynamic server side image resizing (Thumbnails)
 * $wgShowEXIF - Determines whether EXIF metadata is to be displayed. Set to false for not showing data.
 * parameters for upload path
 * $wgThumbLimits - List of image sizes users can pick from
 * $wgTrustedMediaFormats - List of trusted media-types and mime types.
 * $wgSVGMaxSize - Don't scale a SVG larger than this unless its native size is larger.
 * $wgShowEXIF - Show EXIF data.

See also Manual:Configuring file uploads

Antivirus

 * $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.

Parser

 * $wgAllowDisplayTitle - Allow the magic word   to override  the title of a page.
 * $wgAllowExternalImages - Whether to allow inline image pointing to other websites.
 * $wgAllowExternalImagesFrom - If $wgAllowExternalImages is false, you can specify an exception here.
 * $wgParserCacheExpireTime
 * $wgUseXMLparser - Use XML parser?

HTML

 * $wgRawHtml - Allow raw, unchecked HTML in ... sections. Dangerous unless editing is restricted to trusted users. See Manual:$wgGroupPermissions and Manual:Preventing access.
 * $wgUserHtml (deprecated) - Allow limited user-specified HTML in wiki pages?

TeX
To use inline TeX, you need to compile 'texvc' (in the 'math' subdirectory of the MediaWiki package and have latex, dvips, gs (ghostscript), and convert (ImageMagick) installed and available in the PATH. Please see math/README for more information.


 * $wgTexvc - Location of the texvc binary.
 * $wgUseTeX - Enables the use of (TeX) tags.

Tidy
Tidy is an open source tool that cleans up broken HTML. You can use this to ensure that broken HTML in articles doesn't affect the layout of your wiki.


 * $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 PECL extension to use an inprocess tidy library instead of spawning a separate program.
 * $wgTidyOpts - Options passed to tidy on the command line.
 * $wgUseTidy - Use tidy to make sure HTML output is sane.
 * Manual:Build Tidy from source

Special pages

 * $wgAllowSpecialInclusion - Allow special page inclusions such as.
 * $wgExportMaxHistory - Special:Export requests for history of pages with more revisions than this will be rejected.
 * $wgImportTargetNamespace - Optional default target namespace for interwiki imports.
 * $wgLogActions - Lists the message key string for formatting individual events of each type and action when listed in the logs.
 * $wgLogHeaders - Lists the message key string for descriptive text to be shown at the op of each log type.
 * $wgLogNames - Lists the message key string for each log type.
 * $wgLogTypes - List of log types.

Recent changes
See Special:Recentchanges


 * $wgAllowCategorizedRecentChanges - Allow to filter the recentchanges by a category or one of its sub(subsubsub...)categories
 * $wgPutIPinRC - Log IP addresses in the recentchanges table.
 * $wgRCMaxAge - Recentchanges items are periodically purged; entries older than this many seconds will go.
 * $wgRCSeconds (deprecated) - Show seconds in Recent Changes.
 * $wgUseRCPatrol - Use RC Patrolling to check for vandalism
 * $wgRCShowWatchingUsers - Show watching users in recent changes, watchlist and page history views.

UDP updates
Send RC updates via UDP. See: Manual:Simple IRC RC Bot


 * $wgRC2UDPAddress
 * $wgRC2UDPPort
 * $wgRC2UDPPrefix

Users

 * $wgAllowRealName - Whether or not to allow real name fields.
 * $wgMaxNameChars - Maximum number of bytes in username.
 * $wgMinimalPasswordLength - Specifies the minimal length of a user password.
 * Manual:$wgMaxSigChars - Maximum customized signature length.

User agent

 * $wgBadRanges (deprecated) - An array of arrays of IP addresses that each value in $wgBadUserAgents apply to.
 * $wgBadUserAgents (deprecated) - Array of user agents that should be automatically blocked.
 * $wgBrowserBlackList - Browser Blacklist for unicode non compliant browsers.
 * $wgRangeBlockReason (deprecated) - This reason is given for the range block.
 * $wgRangeBlockUser (deprecated) - The block is attributed to this user ID.

Copyright

 * $wgCheckCopyrightUpload - Set this to false if you want to disable checking that detailed copyright information values are not empty.
 * $wgCopyrightIcon - Set this to some HTML to override the copyrights icon with an arbitrary logo.
 * $wgEnableCreativeCommonsRdf
 * $wgEnableDublinCoreRdf
 * $wgMaxCredits - Set this to the number of authors that you want to be credited below an article text.
 * $wgRightsIcon
 * $wgRightsPage
 * $wgRightsText
 * $wgRightsUrl
 * $wgShowCreditsIfMax - If there are more than $wgMaxCredits authors, show $wgMaxCredits of them.
 * $wgUseCopyrightUpload - Set this to true if you want detailed copyright information forms on Upload.

Extensions

 * $wgAuth - Authentication plugin. See AuthPlugin.php.
 * $wgDisableInternalSearch - Disable internal search so that extensions can implement it.
 * $wgExtensionCredits - Global list of extension credits.
 * $wgExtensionFunctions
 * $wgExternalStores - External stores allow including content from non database sources following URL links.
 * $wgHooks - Global list of hooks.
 * $wgSearchForwardUrl - Set this to a URL to forward search requests to some external location.
 * $wgSkinExtensionFunctions
 * $wgAllowSlowParserFunctions - Allow other parser functions like "pagesinnamespace".

HTCP multicast purging

 * $wgHTCPMulticastAddress - Not used yet. Commented out.
 * $wgHTCPMulticastTTL
 * $wgHTCPPort

Miscellaneous settings

 * $wgAllowPageInfo - Allow the info action, very inefficient at the moment.
 * $wgAntiLockFlags - Anti-lock flags.
 * $wgAutoConfirmAge - Number of seconds an account is required to age before it's given the implicit 'autoconfirm' group membership.
 * $wgCapitalLinks - Set this to false to avoid forcing the first letter of links to capitals.
 * $wgClockSkewFudge - Helps avoid cache problems due to timer resolution.
 * $wgCommandLineMode - Indicates whether MediaWiki is running in command-line mode. Should never be set manually!
 * $wgCompressRevisions - If this is set on, old revisions will be compressed on page save if zlib support is available.
 * $wgConf - Create a site configuration object. Not used for much in a default install.
 * $wgCountCategorizedImagesAsUsed - On Special:Unusedimages, consider images used if they are put into a category.
 * $wgDisableHardRedirects - Disable redirects to special pages and interwiki redirects, which use a 302 and have no redirected from link.
 * $wgEnableSOAP (deprecated) - Enable SOAP interface.
 * $wgExternalDiffEngine - Use external C++ diff engine (module wikidiff from the extensions package).
 * $wgExtraRandompageSQL - Filter for Special:Randompage. Part of a WHERE clause.
 * $wgFeedCacheTimeout - 'Minimum' timeout for cached Recentchanges feed, in seconds.
 * $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.
 * $wgFilterCallback - Similarly (to $wgSpamRegex) if this function returns true.
 * $wgGoToEdit - Go button goes straight to the edit screen if the article doesn't exist
 * $wgGrammarForms - Used for parser function.
 * $wgHitcounterUpdateFreq - Sets how often page counters should be updated.
 * $wgIPBlockExpiration (deprecated) - IP blocks expire after this many seconds
 * $wgJobRunRate - Speed of the background task job queue (e.g. update of links).
 * $wgJsMimeType - Media type (MIME type) to use for JavaScript scripts.
 * $wgLegalTitleChars - Override default list of illegal characters in page titles.
 * $wgLegacySchemaConversion (deprecated) - Option to speed up the conversion step for large sites when migrating the schema from 1.4 to 1.5.
 * $wgLivePreview, see also Manual:Live preview
 * $wgMakeDumpLinks (deprecated) - Produce hashed HTML article paths.
 * $wgMaxArticleSize - Maximum article size in kilobytes.
 * $wgMaxShellMemory - Maximum amount of virtual memory available to shell processes under linux, in KB.
 * $wgMaxTocLevel - Maximum indent level of toc.
 * $wgRedirectSources
 * $wgReservedUsernames - List of account names that cannot exist.
 * $wgRestrictionTypes
 * $wgShowIPinHeader - Show the IP in the user bar for anonymous users by default.
 * $wgSortSpecialPages - Whether or not to sort special pages in Special:Specialpages.
 * $wgSpamRegex - A regular expression pattern which stops a page from being saved.
 * $wgUpdateRowsPerJob - Number of rows to update per job.
 * $wgUpdateRowsPerQuery - Number of rows to update per query.
 * $wgUseBetterLinksUpdate (deprecated)
 * $wgUseCommaCount - Specifies the criteria used to define a 'valid article' when counting.
 * $wgUseData (deprecated)
 * $wgUseETag
 * $wgUseExternalDiffEngine (deprecated) - Use external C++ diff engine (module wikidiff from the extensions package).
 * $wgUseExternalEditor - Activate external editor interface for files and pages.
 * $wgUseGeoMode (deprecated) - Recognise longitude/latitude coordinates.
 * $wgUseOldExistenceCheck (deprecated) - Use old prefill link method, for debugging only.
 * $wgUserBlockExpiration (deprecated) - User blocks expire after this many seconds.
 * $wgUseTrackbacks - Not yet documentated (see Trackback)
 * $wgUseValidation (deprecated) - Validation for print or other production versions.
 * $wgValidationForAnons (deprecated) - Whether to use article validation for anonymous users.