Go to the documentation of this file.
27 define(
'MW_NO_OUTPUT_COMPRESSION', 1 );
28 require __DIR__ .
'/includes/WebStart.php';
33 if ( defined(
'THUMB_HANDLER' ) ) {
54 # Set action base paths so that WebRequest::getPathInfo()
55 # recognizes the "X" as the 'title' in ../thumb_handler.php/X urls.
56 # Note: If Custom per-extension repo paths are set, this may break.
66 wfThumbError( 404,
'Could not determine the name of the requested thumbnail.' );
72 wfThumbError( 400,
'The specified thumbnail parameters are not recognized.' );
104 if ( isset(
$params[
'width'] ) && substr(
$params[
'width'], -2 ) ==
'px' ) {
121 $fileName = strtr( $fileName,
'\\/',
'__' );
129 # @todo fix
this convention to actually be reasonable.
130 $repo->getZonePath(
'public' ) .
'/' . $repo->getTempHashPath( $fileName ) . $fileName
132 } elseif ( $isOld ) {
134 $bits = explode(
'!', $fileName, 2 );
135 if (
count( $bits ) != 2 ) {
158 if ( !$img->getTitle() || !$img->getTitle()->userCan(
'read' ) ) {
159 wfThumbError( 403,
'Access denied. You do not have permission to access ' .
160 'the source file.' );
163 $headers[] =
'Cache-Control: private';
164 $varyHeader[] =
'Cookie';
174 if ( isset(
$params[
'thumbName'] ) ) {
178 wfThumbError( 400,
'The specified thumbnail parameters are not recognized.' );
183 if ( !$img->exists() ) {
184 $redirectedLocation =
false;
190 if ( $possRedirFile && !is_null( $possRedirFile->getRedirected() ) ) {
191 $redirTarget = $possRedirFile->getName();
193 if ( $targetFile->exists() ) {
194 $newThumbName = $targetFile->thumbName(
$params );
197 $newThumbUrl = $targetFile->getArchiveThumbUrl(
198 $bits[0] .
'!' . $targetFile->getName(), $newThumbName );
200 $newThumbUrl = $targetFile->getThumbUrl( $newThumbName );
207 if ( $redirectedLocation ) {
211 $response->header(
'Location: ' . $redirectedLocation );
213 gmdate(
'D, d M Y H:i:s', time() + 12 * 3600 ) .
' GMT' );
215 $varyHeader[] =
'X-Forwarded-Proto';
217 if (
count( $varyHeader ) ) {
218 $response->header(
'Vary: ' . implode(
', ', $varyHeader ) );
220 $response->header(
'Content-Length: 0' );
227 } elseif ( $img->getPath() ===
false ) {
228 wfThumbErrorText( 400,
"The source file '$fileName' is not locally accessible." );
234 if ( !empty( $_SERVER[
'HTTP_IF_MODIFIED_SINCE'] ) ) {
236 $imsString = preg_replace(
'/;.*$/',
'', $_SERVER[
"HTTP_IF_MODIFIED_SINCE"] );
238 MediaWiki\suppressWarnings();
239 $imsUnix = strtotime( $imsString );
240 MediaWiki\restoreWarnings();
241 if (
wfTimestamp( TS_UNIX, $img->getTimestamp() ) <= $imsUnix ) {
254 $thumbName = $img->thumbName(
$params );
255 if ( !strlen( $thumbName ) ) {
257 'Empty return from File::thumbName'
264 'The specified thumbnail parameters are not valid: ' .
$e->getMessage()
268 wfThumbError( 500,
$e->getHTML(),
'Exception caught while extracting thumb name',
269 [
'exception' =>
$e ] );
277 if ( $rel404 !==
null ) {
278 if ( rawurldecode( $rel404 ) === $img->getThumbRel( $thumbName ) ) {
280 } elseif ( rawurldecode( $rel404 ) === $img->getThumbRel( $thumbName2 ) ) {
287 gmdate(
'D, d M Y H:i:s', time() + 7 * 86400 ) .
' GMT' );
289 $varyHeader[] =
'X-Forwarded-Proto';
291 if (
count( $varyHeader ) ) {
292 $response->header(
'Vary: ' . implode(
', ', $varyHeader ) );
296 wfThumbErrorText( 404,
"The given path of the specified thumbnail is incorrect;
297 expected '" . $img->getThumbRel( $thumbName ) .
"' but got '" .
298 rawurldecode( $rel404 ) .
"'." );
303 $dispositionType = isset(
$params[
'download'] ) ?
'attachment' :
'inline';
307 "Content-Disposition: {$img->getThumbDisposition( $thumbName, $dispositionType )}";
309 if (
count( $varyHeader ) ) {
310 $headers[] =
'Vary: ' . implode(
', ', $varyHeader );
314 $thumbPath = $img->getThumbPath( $thumbName );
315 if ( $img->getRepo()->fileExists( $thumbPath ) ) {
317 $status = $img->getRepo()->streamFileWithStatus( $thumbPath, $headers );
321 MediaWikiServices::getInstance()->getStatsdDataFactory()->timing(
322 'media.thumbnail.stream', $streamtime
325 wfThumbError( 500,
'Could not stream the file',
null, [
'file' => $thumbName,
326 'path' => $thumbPath,
'error' =>
$status->getWikiText(
false,
false,
'en' ) ] );
335 } elseif (
$user->pingLimiter(
'renderfile' ) ) {
349 $errorMsg = $errorMsg ?: $msg->rawParams(
'File::transform() returned false' )->escaped();
351 $errorMsg->
getKey() ===
'thumbnail_image-failure-limit'
355 } elseif ( $thumb->isError() ) {
356 $errorMsg = $thumb->getHtmlMsg();
357 $errorCode = $thumb->getHttpStatusCode();
358 } elseif ( !$thumb->hasFile() ) {
359 $errorMsg = $msg->rawParams(
'No path supplied in thumbnail object' )->escaped();
360 } elseif ( $thumb->fileIsSource() ) {
362 ->rawParams(
'Image was not scaled, is the requested width bigger than the source?' )
367 if ( $errorMsg !==
false ) {
368 wfThumbError( $errorCode, $errorMsg,
null, [
'file' => $thumbName,
'path' => $thumbPath ] );
371 $status = $thumb->streamFileWithStatus( $headers );
374 'file' => $thumbName,
'path' => $thumbPath,
375 'error' =>
$status->getWikiText(
false,
false,
'en' ) ] );
402 if (
$cache->get( $key ) >= 4 ) {
403 return [
false,
wfMessage(
'thumbnail_image-failure-limit', 4 ) ];
408 register_shutdown_function(
function ()
use (
$cache, &$done, $key ) {
411 $cache->incrWithInit( $key, $cache::TTL_HOUR + mt_rand( 0, 300 ) );
422 $poolCounterType =
'FileRenderExpensive';
424 $poolCounterType =
'FileRender';
431 'doWork' =>
function ()
use ( $file,
$params ) {
434 'doCachedWork' =>
function ()
use ( $file,
$params, $thumbPath ) {
437 return $file->
getRepo()->fileExists( $thumbPath )
442 return wfMessage(
'generic-pool-error' )->parse() .
'<hr>' .
$status->getHTML();
449 } elseif ( is_string(
$result ) ) {
452 }
catch ( Exception
$e ) {
459 if ( !$thumb || $thumb->isError() ) {
461 $cache->incrWithInit( $key, $cache::TTL_HOUR + mt_rand( 0, 300 ) );
464 return [ $thumb, $errorHtml ];
489 $hashDirReg = $subdirReg =
'';
490 $hashLevels = $repo->getHashLevels();
491 for ( $i = 0; $i < $hashLevels; $i++ ) {
492 $subdirReg .=
'[0-9a-f]';
493 $hashDirReg .=
"$subdirReg/";
497 if ( preg_match(
"!^((archive/)?$hashDirReg([^/]*)/([^/]*))$!", $thumbRel, $m ) ) {
498 list( , $rel, $archOrTemp, $filename, $thumbname ) = $m;
500 } elseif ( preg_match(
"!^(temp/)($hashDirReg([^/]*)/([^/]*))$!", $thumbRel, $m ) ) {
501 list( , $archOrTemp, $rel, $filename, $thumbname ) = $m;
506 $params = [
'f' => $filename,
'rel404' => $rel ];
507 if ( $archOrTemp ===
'archive/' ) {
509 } elseif ( $archOrTemp ===
'temp/' ) {
513 $params[
'thumbName'] = $thumbname;
526 if ( !isset(
$params[
'thumbName'] ) ) {
527 throw new InvalidArgumentException(
"No thumbnail name passed to wfExtractThumbParams" );
530 $thumbname =
$params[
'thumbName'];
550 $fileNamePos = strrpos( $thumbname,
$params[
'f'] );
551 if ( $fileNamePos ===
false ) {
553 $fileNamePos = strrpos( $thumbname,
'thumbnail' );
556 if (
$handler && $fileNamePos !==
false ) {
557 $paramString = substr( $thumbname, 0, $fileNamePos - 1 );
558 $extraParams =
$handler->parseParamString( $paramString );
559 if ( $extraParams !==
false ) {
565 if ( preg_match(
'!^(page(\d*)-)*(\d*)px-[^/]*$!', $thumbname,
$matches ) ) {
600 header(
'Cache-Control: no-cache' );
601 header(
'Content-Type: text/html; charset=utf-8' );
606 header(
'Vary: Cookie' );
608 LoggerFactory::getInstance(
'thumb' )->error( $msgText ?: $msgHtml,
$context );
611 if ( $wgShowHostnames ) {
612 header(
'X-MW-Thumbnail-Renderer: ' .
wfHostname() );
613 $url = htmlspecialchars(
614 isset( $_SERVER[
'REQUEST_URI'] ) ? $_SERVER[
'REQUEST_URI'] :
''
617 $debug =
"<!-- $url -->\n<!-- $hostname -->\n";
624 <meta charset=
"UTF-8" />
628 <h1>Error generating thumbnail</h1>
637 header(
'Content-Length: ' . strlen(
$content ) );
error also a ContextSource you ll probably need to make sure the header is varied on and they can depend only on the ResourceLoaderContext $context
static singleton()
Get a RepoGroup instance.
processing should stop and the error should be shown to the user * false
wfThumbHandle404()
Handle a thumbnail request via thumbnail file URL.
static getLocalClusterInstance()
Get the main cluster-local cache object.
wfThumbIsStandard(File $file, array $params)
Returns true if these thumbnail parameters match one that MediaWiki requests from file description pa...
do that in ParserLimitReportFormat instead use this to modify the parameters of the image and a DIV can begin in one section and end in another Make sure your code can handle that case gracefully See the EditSectionClearerLink extension for an example zero based
isExpensiveToThumbnail()
True if creating thumbnails from the file is large or otherwise resource-intensive.
The index of the header message $result[1]=The index of the body text message $result[2 through n]=Parameters passed to body text message. Please note the header message cannot receive/use parameters. 'ImportHandleLogItemXMLTag':When parsing a XML tag in a log item. Return false to stop further processing of the tag $reader:XMLReader object $logInfo:Array of information 'ImportHandlePageXMLTag':When parsing a XML tag in a page. Return false to stop further processing of the tag $reader:XMLReader object & $pageInfo:Array of information 'ImportHandleRevisionXMLTag':When parsing a XML tag in a page revision. Return false to stop further processing of the tag $reader:XMLReader object $pageInfo:Array of page information $revisionInfo:Array of revision information 'ImportHandleToplevelXMLTag':When parsing a top level XML tag. Return false to stop further processing of the tag $reader:XMLReader object 'ImportHandleUploadXMLTag':When parsing a XML tag in a file upload. Return false to stop further processing of the tag $reader:XMLReader object $revisionInfo:Array of information 'ImportLogInterwikiLink':Hook to change the interwiki link used in log entries and edit summaries for transwiki imports. & $fullInterwikiPrefix:Interwiki prefix, may contain colons. & $pageTitle:String that contains page title. 'ImportSources':Called when reading from the $wgImportSources configuration variable. Can be used to lazy-load the import sources list. & $importSources:The value of $wgImportSources. Modify as necessary. See the comment in DefaultSettings.php for the detail of how to structure this array. 'InfoAction':When building information to display on the action=info page. $context:IContextSource object & $pageInfo:Array of information 'InitializeArticleMaybeRedirect':MediaWiki check to see if title is a redirect. & $title:Title object for the current page & $request:WebRequest & $ignoreRedirect:boolean to skip redirect check & $target:Title/string of redirect target & $article:Article object 'InternalParseBeforeLinks':during Parser 's internalParse method before links but after nowiki/noinclude/includeonly/onlyinclude and other processings. & $parser:Parser object & $text:string containing partially parsed text & $stripState:Parser 's internal StripState object 'InternalParseBeforeSanitize':during Parser 's internalParse method just before the parser removes unwanted/dangerous HTML tags and after nowiki/noinclude/includeonly/onlyinclude and other processings. Ideal for syntax-extensions after template/parser function execution which respect nowiki and HTML-comments. & $parser:Parser object & $text:string containing partially parsed text & $stripState:Parser 's internal StripState object 'InterwikiLoadPrefix':When resolving if a given prefix is an interwiki or not. Return true without providing an interwiki to continue interwiki search. $prefix:interwiki prefix we are looking for. & $iwData:output array describing the interwiki with keys iw_url, iw_local, iw_trans and optionally iw_api and iw_wikiid. 'InvalidateEmailComplete':Called after a user 's email has been invalidated successfully. $user:user(object) whose email is being invalidated 'IRCLineURL':When constructing the URL to use in an IRC notification. Callee may modify $url and $query, URL will be constructed as $url . $query & $url:URL to index.php & $query:Query string $rc:RecentChange object that triggered url generation 'IsFileCacheable':Override the result of Article::isFileCacheable()(if true) & $article:article(object) being checked 'IsTrustedProxy':Override the result of IP::isTrustedProxy() & $ip:IP being check & $result:Change this value to override the result of IP::isTrustedProxy() 'IsUploadAllowedFromUrl':Override the result of UploadFromUrl::isAllowedUrl() $url:URL used to upload from & $allowed:Boolean indicating if uploading is allowed for given URL 'isValidEmailAddr':Override the result of Sanitizer::validateEmail(), for instance to return false if the domain name doesn 't match your organization. $addr:The e-mail address entered by the user & $result:Set this and return false to override the internal checks 'isValidPassword':Override the result of User::isValidPassword() $password:The password entered by the user & $result:Set this and return false to override the internal checks $user:User the password is being validated for 'Language::getMessagesFileName':$code:The language code or the language we 're looking for a messages file for & $file:The messages file path, you can override this to change the location. 'LanguageGetMagic':DEPRECATED! Use $magicWords in a file listed in $wgExtensionMessagesFiles instead. Use this to define synonyms of magic words depending of the language & $magicExtensions:associative array of magic words synonyms $lang:language code(string) 'LanguageGetNamespaces':Provide custom ordering for namespaces or remove namespaces. Do not use this hook to add namespaces. Use CanonicalNamespaces for that. & $namespaces:Array of namespaces indexed by their numbers 'LanguageGetSpecialPageAliases':DEPRECATED! Use $specialPageAliases in a file listed in $wgExtensionMessagesFiles instead. Use to define aliases of special pages names depending of the language & $specialPageAliases:associative array of magic words synonyms $lang:language code(string) 'LanguageGetTranslatedLanguageNames':Provide translated language names. & $names:array of language code=> language name $code:language of the preferred translations 'LanguageLinks':Manipulate a page 's language links. This is called in various places to allow extensions to define the effective language links for a page. $title:The page 's Title. & $links:Array with elements of the form "language:title" in the order that they will be output. & $linkFlags:Associative array mapping prefixed links to arrays of flags. Currently unused, but planned to provide support for marking individual language links in the UI, e.g. for featured articles. 'LanguageSelector':Hook to change the language selector available on a page. $out:The output page. $cssClassName:CSS class name of the language selector. 'LinkBegin':DEPRECATED! Use HtmlPageLinkRendererBegin instead. Used when generating internal and interwiki links in Linker::link(), before processing starts. Return false to skip default processing and return $ret. See documentation for Linker::link() for details on the expected meanings of parameters. $skin:the Skin object $target:the Title that the link is pointing to & $html:the contents that the< a > tag should have(raw HTML) $result
wfTimestamp( $outputtype=TS_UNIX, $ts=0)
Get a timestamp string in one of various formats.
A file object referring to either a standalone local file, or a file in a local repository with no da...
getKey()
Returns the message key.
this hook is for auditing only RecentChangesLinked and Watchlist RecentChangesLinked and Watchlist Do not use this to implement individual filters if they are compatible with the ChangesListFilter and ChangesListFilterGroup structure use sub classes of those in conjunction with the ChangesListSpecialPageStructuredFilters hook This hook can be used to implement filters that do not implement that or custom behavior that is not an individual filter e g Watchlist and Watchlist you will want to construct new ChangesListBooleanFilter or ChangesListStringOptionsFilter objects When constructing you specify which group they belong to You can reuse existing or create your you must register them with $special registerFilterGroup removed from all revisions and log entries to which it was applied This gives extensions a chance to take it off their books as the deletion has already been partly carried out by this point or something similar the user will be unable to create the tag set $status
getSha1()
Get the SHA-1 base 36 hash of the file.
as see the revision history and available at free of to any person obtaining a copy of this software and associated documentation to deal in the Software without including without limitation the rights to use
please add to it if you re going to add events to the MediaWiki code where normally authentication against an external auth plugin would be creating a account $user
wfExtractThumbRequestInfo( $thumbRel)
Convert pathinfo type parameter, into normal request parameters.
wfHostname()
Fetch server name for use in error reporting etc.
Convenience class for dealing with PoolCounters using callbacks.
wfExtractThumbParams( $file, $params)
Convert a thumbnail name (122px-foo.png) to parameters, using file handler.
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Generic operation result class Has warning/error list, boolean status and arbitrary value.
$wgAttemptFailureEpoch
Certain operations are avoided if there were too many recent failures, for example,...
Implements some public methods and some protected utility functions which are required by multiple ch...
namespace and then decline to actually register it file or subcat img or subcat $title
wfDeprecated( $function, $version=false, $component=false, $callerOffset=2)
Throws a warning that $function is deprecated.
this hook is for auditing only RecentChangesLinked and Watchlist RecentChangesLinked and Watchlist Do not use this to implement individual filters if they are compatible with the ChangesListFilter and ChangesListFilterGroup structure use sub classes of those in conjunction with the ChangesListSpecialPageStructuredFilters hook This hook can be used to implement filters that do not implement that or custom behavior that is not an individual filter e g Watchlist and Watchlist you will want to construct new ChangesListBooleanFilter or ChangesListStringOptionsFilter objects When constructing you specify which group they belong to You can reuse existing or create your you must register them with $special registerFilterGroup removed from all revisions and log entries to which it was applied This gives extensions a chance to take it off their books as the deletion has already been partly carried out by this point or something similar the user will be unable to create the tag set and then return false from the hook function Ensure you consume the ChangeTagAfterDelete hook to carry out custom deletion actions as context called by AbstractContent::getParserOutput May be used to override the normal model specific rendering of page content $content
execute( $skipcache=false)
Get the result of the work (whatever it is), or the result of the error() function.
c Accompany it with the information you received as to the offer to distribute corresponding source complete source code means all the source code for all modules it plus any associated interface definition files
static getPathInfo( $want='all')
Extract relevant query arguments from the http request uri's path to be merged with the normal php pr...
$wgVaryOnXFP
Add X-Forwarded-Proto to the Vary and Key headers for API requests and RSS/Atom feeds.
This document describes the state of Postgres support in MediaWiki
when a variable name is used in a it is silently declared as a new masking the global
deferred txt A few of the database updates required by various functions here can be deferred until after the result page is displayed to the user For updating the view updating the linked to tables after a etc PHP does not yet have any way to tell the server to actually return and disconnect while still running these but it might have such a feature in the future We handle these by creating a deferred update object and putting those objects on a global list
</td >< td > &</td >< td > t want your writing to be edited mercilessly and redistributed at will
static makeTitleSafe( $ns, $title, $fragment='', $interwiki='')
Create a new Title from a namespace index and a DB key.
div flags Integer display flags(NO_ACTION_LINK, NO_EXTRA_USER_LINKS) 'LogException' returning false will NOT prevent logging $e
We ve cleaned up the code here by removing clumps of infrequently used code and moving them off somewhere else It s much easier for someone working with this code to see what s _really_ going on
static getGroupPermissions( $groups)
Get the permissions associated with a given list of groups.
getName()
Return the name of this file.
this hook is for auditing only or null if authentication failed before getting that far or null if we can t even determine that probably a stub it is not rendered in wiki pages or galleries in category pages allow injecting custom HTML after the section Any uses of the hook need to handle escaping see BaseTemplate::getToolbox and BaseTemplate::makeListItem for details on the format of individual items inside of this array or by returning and letting standard HTTP rendering take place modifiable or by returning false and taking over the output modifiable modifiable after all normalizations have been except for the $wgMaxImageArea check set to true or false to override the $wgMaxImageArea check result gives extension the possibility to transform it themselves $handler
static getMain()
Static methods.
this hook is for auditing only $response
const RENDER_NOW
Force rendering in the current process.
transform( $params, $flags=0)
Transform a media file.
wfGenerateThumbnail(File $file, array $params, $thumbName, $thumbPath)
Actually try to generate a new thumbnail.
static header( $code)
Output an HTTP status code header.
wfThumbErrorText( $status, $msgText)
Output a thumbnail generation error message.
The ContentHandler facility adds support for arbitrary content types on wiki instead of relying on wikitext for everything It was introduced in MediaWiki Each kind of and so on Built in content types are
MediaWiki Logger LoggerFactory implements a PSR[0] compatible message logging system Named Psr Log LoggerInterface instances can be obtained from the MediaWiki Logger LoggerFactory::getInstance() static method. MediaWiki\Logger\LoggerFactory expects a class implementing the MediaWiki\Logger\Spi interface to act as a factory for new Psr\Log\LoggerInterface instances. The "Spi" in MediaWiki\Logger\Spi stands for "service provider interface". An SPI is an API intended to be implemented or extended by a third party. This software design pattern is intended to enable framework extension and replaceable components. It is specifically used in the MediaWiki\Logger\LoggerFactory service to allow alternate PSR-3 logging implementations to be easily integrated with MediaWiki. The service provider interface allows the backend logging library to be implemented in multiple ways. The $wgMWLoggerDefaultSpi global provides the classname of the default MediaWiki\Logger\Spi implementation to be loaded at runtime. This can either be the name of a class implementing the MediaWiki\Logger\Spi with a zero argument const ructor or a callable that will return an MediaWiki\Logger\Spi instance. Alternately the MediaWiki\Logger\LoggerFactory MediaWiki Logger LoggerFactory
either a unescaped string or a HtmlArmor object after in associative array form externallinks including delete and has completed for all link tables whether this was an auto creation default is conds Array Extra conditions for the No matching items in log is displayed if loglist is empty msgKey Array If you want a nice box with a set this to the key of the message First element is the message additional optional elements are parameters for the key that are processed with wfMessage() -> params() ->parseAsBlock() - offset Set to overwrite offset parameter in $wgRequest set to '' to unset offset - wrap String Wrap the message in html(usually something like "<
design txt This is a brief overview of the new design More thorough and up to date information is available on the documentation wiki at name
getRepo()
Returns the repository.
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency MediaWikiServices
wfLocalFile( $title)
Get an object referring to a locally registered file.
static run( $event, array $args=[], $deprecatedVersion=null)
Call hook functions defined in Hooks::register and $wgHooks.
wfThumbError( $status, $msgHtml, $msgText=null, $context=[])
Output a thumbnail generation error message.
wfExpandUrl( $url, $defaultProto=PROTO_CURRENT)
Expand a potentially local URL to a fully-qualified URL.
the array() calling protocol came about after MediaWiki 1.4rc1.
wfStreamThumb(array $params)
Stream a thumbnail specified by parameters.