MediaWiki  REL1_31
ApiComparePages.php
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1 <?php
22 class ApiComparePages extends ApiBase {
23 
25 
26  public function execute() {
27  $params = $this->extractRequestParams();
28 
29  // Parameter validation
30  $this->requireAtLeastOneParameter( $params, 'fromtitle', 'fromid', 'fromrev', 'fromtext' );
31  $this->requireAtLeastOneParameter( $params, 'totitle', 'toid', 'torev', 'totext', 'torelative' );
32 
33  $this->props = array_flip( $params['prop'] );
34 
35  // Cache responses publicly by default. This may be overridden later.
36  $this->getMain()->setCacheMode( 'public' );
37 
38  // Get the 'from' Revision and Content
39  list( $fromRev, $fromContent, $relRev ) = $this->getDiffContent( 'from', $params );
40 
41  // Get the 'to' Revision and Content
42  if ( $params['torelative'] !== null ) {
43  if ( !$relRev ) {
44  $this->dieWithError( 'apierror-compare-relative-to-nothing' );
45  }
46  switch ( $params['torelative'] ) {
47  case 'prev':
48  // Swap 'from' and 'to'
49  $toRev = $fromRev;
50  $toContent = $fromContent;
51  $fromRev = $relRev->getPrevious();
52  $fromContent = $fromRev
53  ? $fromRev->getContent( Revision::FOR_THIS_USER, $this->getUser() )
54  : $toContent->getContentHandler()->makeEmptyContent();
55  if ( !$fromContent ) {
56  $this->dieWithError(
57  [ 'apierror-missingcontent-revid', $fromRev->getId() ], 'missingcontent'
58  );
59  }
60  break;
61 
62  case 'next':
63  $toRev = $relRev->getNext();
64  $toContent = $toRev
65  ? $toRev->getContent( Revision::FOR_THIS_USER, $this->getUser() )
66  : $fromContent;
67  if ( !$toContent ) {
68  $this->dieWithError( [ 'apierror-missingcontent-revid', $toRev->getId() ], 'missingcontent' );
69  }
70  break;
71 
72  case 'cur':
73  $title = $relRev->getTitle();
74  $id = $title->getLatestRevID();
75  $toRev = $id ? Revision::newFromId( $id ) : null;
76  if ( !$toRev ) {
77  $this->dieWithError(
78  [ 'apierror-missingrev-title', wfEscapeWikiText( $title->getPrefixedText() ) ],
79  'nosuchrevid'
80  );
81  }
82  $toContent = $toRev->getContent( Revision::FOR_THIS_USER, $this->getUser() );
83  if ( !$toContent ) {
84  $this->dieWithError( [ 'apierror-missingcontent-revid', $toRev->getId() ], 'missingcontent' );
85  }
86  break;
87  }
88  $relRev2 = null;
89  } else {
90  list( $toRev, $toContent, $relRev2 ) = $this->getDiffContent( 'to', $params );
91  }
92 
93  // Should never happen, but just in case...
94  if ( !$fromContent || !$toContent ) {
95  $this->dieWithError( 'apierror-baddiff' );
96  }
97 
98  // Extract sections, if told to
99  if ( isset( $params['fromsection'] ) ) {
100  $fromContent = $fromContent->getSection( $params['fromsection'] );
101  if ( !$fromContent ) {
102  $this->dieWithError(
103  [ 'apierror-compare-nosuchfromsection', wfEscapeWikiText( $params['fromsection'] ) ],
104  'nosuchfromsection'
105  );
106  }
107  }
108  if ( isset( $params['tosection'] ) ) {
109  $toContent = $toContent->getSection( $params['tosection'] );
110  if ( !$toContent ) {
111  $this->dieWithError(
112  [ 'apierror-compare-nosuchtosection', wfEscapeWikiText( $params['tosection'] ) ],
113  'nosuchtosection'
114  );
115  }
116  }
117 
118  // Get the diff
119  $context = new DerivativeContext( $this->getContext() );
120  if ( $relRev && $relRev->getTitle() ) {
121  $context->setTitle( $relRev->getTitle() );
122  } elseif ( $relRev2 && $relRev2->getTitle() ) {
123  $context->setTitle( $relRev2->getTitle() );
124  } else {
125  $this->guessTitleAndModel();
126  if ( $this->guessedTitle ) {
127  $context->setTitle( $this->guessedTitle );
128  }
129  }
130  $de = $fromContent->getContentHandler()->createDifferenceEngine(
131  $context,
132  $fromRev ? $fromRev->getId() : 0,
133  $toRev ? $toRev->getId() : 0,
134  /* $rcid = */ null,
135  /* $refreshCache = */ false,
136  /* $unhide = */ true
137  );
138  $de->setContent( $fromContent, $toContent );
139  $difftext = $de->getDiffBody();
140  if ( $difftext === false ) {
141  $this->dieWithError( 'apierror-baddiff' );
142  }
143 
144  // Fill in the response
145  $vals = [];
146  $this->setVals( $vals, 'from', $fromRev );
147  $this->setVals( $vals, 'to', $toRev );
148 
149  if ( isset( $this->props['rel'] ) ) {
150  if ( $fromRev ) {
151  $rev = $fromRev->getPrevious();
152  if ( $rev ) {
153  $vals['prev'] = $rev->getId();
154  }
155  }
156  if ( $toRev ) {
157  $rev = $toRev->getNext();
158  if ( $rev ) {
159  $vals['next'] = $rev->getId();
160  }
161  }
162  }
163 
164  if ( isset( $this->props['diffsize'] ) ) {
165  $vals['diffsize'] = strlen( $difftext );
166  }
167  if ( isset( $this->props['diff'] ) ) {
168  ApiResult::setContentValue( $vals, 'body', $difftext );
169  }
170 
171  // Diffs can be really big and there's little point in having
172  // ApiResult truncate it to an empty response since the diff is the
173  // whole reason this module exists. So pass NO_SIZE_CHECK here.
174  $this->getResult()->addValue( null, $this->getModuleName(), $vals, ApiResult::NO_SIZE_CHECK );
175  }
176 
188  private function guessTitleAndModel() {
189  if ( $this->guessed ) {
190  return;
191  }
192 
193  $this->guessed = true;
194  $params = $this->extractRequestParams();
195 
196  foreach ( [ 'from', 'to' ] as $prefix ) {
197  if ( $params["{$prefix}rev"] !== null ) {
198  $revId = $params["{$prefix}rev"];
199  $rev = Revision::newFromId( $revId );
200  if ( !$rev ) {
201  // Titles of deleted revisions aren't secret, per T51088
202  $arQuery = Revision::getArchiveQueryInfo();
203  $row = $this->getDB()->selectRow(
204  $arQuery['tables'],
205  array_merge(
206  $arQuery['fields'],
207  [ 'ar_namespace', 'ar_title' ]
208  ),
209  [ 'ar_rev_id' => $revId ],
210  __METHOD__,
211  [],
212  $arQuery['joins']
213  );
214  if ( $row ) {
216  }
217  }
218  if ( $rev ) {
219  $this->guessedTitle = $rev->getTitle();
220  $this->guessedModel = $rev->getContentModel();
221  break;
222  }
223  }
224 
225  if ( $params["{$prefix}title"] !== null ) {
226  $title = Title::newFromText( $params["{$prefix}title"] );
227  if ( $title && !$title->isExternal() ) {
228  $this->guessedTitle = $title;
229  break;
230  }
231  }
232 
233  if ( $params["{$prefix}id"] !== null ) {
234  $title = Title::newFromID( $params["{$prefix}id"] );
235  if ( $title ) {
236  $this->guessedTitle = $title;
237  break;
238  }
239  }
240  }
241 
242  if ( !$this->guessedModel ) {
243  if ( $this->guessedTitle ) {
244  $this->guessedModel = $this->guessedTitle->getContentModel();
245  } elseif ( $params['fromcontentmodel'] !== null ) {
246  $this->guessedModel = $params['fromcontentmodel'];
247  } elseif ( $params['tocontentmodel'] !== null ) {
248  $this->guessedModel = $params['tocontentmodel'];
249  }
250  }
251  }
252 
270  private function getDiffContent( $prefix, array $params ) {
271  $title = null;
272  $rev = null;
273  $suppliedContent = $params["{$prefix}text"] !== null;
274 
275  // Get the revision and title, if applicable
276  $revId = null;
277  if ( $params["{$prefix}rev"] !== null ) {
278  $revId = $params["{$prefix}rev"];
279  } elseif ( $params["{$prefix}title"] !== null || $params["{$prefix}id"] !== null ) {
280  if ( $params["{$prefix}title"] !== null ) {
281  $title = Title::newFromText( $params["{$prefix}title"] );
282  if ( !$title || $title->isExternal() ) {
283  $this->dieWithError(
284  [ 'apierror-invalidtitle', wfEscapeWikiText( $params["{$prefix}title"] ) ]
285  );
286  }
287  } else {
288  $title = Title::newFromID( $params["{$prefix}id"] );
289  if ( !$title ) {
290  $this->dieWithError( [ 'apierror-nosuchpageid', $params["{$prefix}id"] ] );
291  }
292  }
293  $revId = $title->getLatestRevID();
294  if ( !$revId ) {
295  $revId = null;
296  // Only die here if we're not using supplied text
297  if ( !$suppliedContent ) {
298  if ( $title->exists() ) {
299  $this->dieWithError(
300  [ 'apierror-missingrev-title', wfEscapeWikiText( $title->getPrefixedText() ) ],
301  'nosuchrevid'
302  );
303  } else {
304  $this->dieWithError(
305  [ 'apierror-missingtitle-byname', wfEscapeWikiText( $title->getPrefixedText() ) ],
306  'missingtitle'
307  );
308  }
309  }
310  }
311  }
312  if ( $revId !== null ) {
313  $rev = Revision::newFromId( $revId );
314  if ( !$rev && $this->getUser()->isAllowedAny( 'deletedtext', 'undelete' ) ) {
315  // Try the 'archive' table
316  $arQuery = Revision::getArchiveQueryInfo();
317  $row = $this->getDB()->selectRow(
318  $arQuery['tables'],
319  array_merge(
320  $arQuery['fields'],
321  [ 'ar_namespace', 'ar_title' ]
322  ),
323  [ 'ar_rev_id' => $revId ],
324  __METHOD__,
325  [],
326  $arQuery['joins']
327  );
328  if ( $row ) {
330  $rev->isArchive = true;
331  }
332  }
333  if ( !$rev ) {
334  $this->dieWithError( [ 'apierror-nosuchrevid', $revId ] );
335  }
336  $title = $rev->getTitle();
337 
338  // If we don't have supplied content, return here. Otherwise,
339  // continue on below with the supplied content.
340  if ( !$suppliedContent ) {
341  $content = $rev->getContent( Revision::FOR_THIS_USER, $this->getUser() );
342  if ( !$content ) {
343  $this->dieWithError( [ 'apierror-missingcontent-revid', $revId ], 'missingcontent' );
344  }
345  return [ $rev, $content, $rev ];
346  }
347  }
348 
349  // Override $content based on supplied text
350  $model = $params["{$prefix}contentmodel"];
351  $format = $params["{$prefix}contentformat"];
352 
353  if ( !$model && $rev ) {
354  $model = $rev->getContentModel();
355  }
356  if ( !$model && $title ) {
357  $model = $title->getContentModel();
358  }
359  if ( !$model ) {
360  $this->guessTitleAndModel();
361  $model = $this->guessedModel;
362  }
363  if ( !$model ) {
364  $model = CONTENT_MODEL_WIKITEXT;
365  $this->addWarning( [ 'apiwarn-compare-nocontentmodel', $model ] );
366  }
367 
368  if ( !$title ) {
369  $this->guessTitleAndModel();
371  }
372 
373  try {
374  $content = ContentHandler::makeContent( $params["{$prefix}text"], $title, $model, $format );
375  } catch ( MWContentSerializationException $ex ) {
376  $this->dieWithException( $ex, [
377  'wrap' => ApiMessage::create( 'apierror-contentserializationexception', 'parseerror' )
378  ] );
379  }
380 
381  if ( $params["{$prefix}pst"] ) {
382  if ( !$title ) {
383  $this->dieWithError( 'apierror-compare-no-title' );
384  }
385  $popts = ParserOptions::newFromContext( $this->getContext() );
386  $content = $content->preSaveTransform( $title, $this->getUser(), $popts );
387  }
388 
389  return [ null, $content, $rev ];
390  }
391 
398  private function setVals( &$vals, $prefix, $rev ) {
399  if ( $rev ) {
400  $title = $rev->getTitle();
401  if ( isset( $this->props['ids'] ) ) {
402  $vals["{$prefix}id"] = $title->getArticleID();
403  $vals["{$prefix}revid"] = $rev->getId();
404  }
405  if ( isset( $this->props['title'] ) ) {
406  ApiQueryBase::addTitleInfo( $vals, $title, $prefix );
407  }
408  if ( isset( $this->props['size'] ) ) {
409  $vals["{$prefix}size"] = $rev->getSize();
410  }
411 
412  $anyHidden = false;
413  if ( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
414  $vals["{$prefix}texthidden"] = true;
415  $anyHidden = true;
416  }
417 
418  if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
419  $vals["{$prefix}userhidden"] = true;
420  $anyHidden = true;
421  }
422  if ( isset( $this->props['user'] ) &&
423  $rev->userCan( Revision::DELETED_USER, $this->getUser() )
424  ) {
425  $vals["{$prefix}user"] = $rev->getUserText( Revision::RAW );
426  $vals["{$prefix}userid"] = $rev->getUser( Revision::RAW );
427  }
428 
429  if ( $rev->isDeleted( Revision::DELETED_COMMENT ) ) {
430  $vals["{$prefix}commenthidden"] = true;
431  $anyHidden = true;
432  }
433  if ( $rev->userCan( Revision::DELETED_COMMENT, $this->getUser() ) ) {
434  if ( isset( $this->props['comment'] ) ) {
435  $vals["{$prefix}comment"] = $rev->getComment( Revision::RAW );
436  }
437  if ( isset( $this->props['parsedcomment'] ) ) {
438  $vals["{$prefix}parsedcomment"] = Linker::formatComment(
439  $rev->getComment( Revision::RAW ),
440  $rev->getTitle()
441  );
442  }
443  }
444 
445  if ( $anyHidden ) {
446  $this->getMain()->setCacheMode( 'private' );
447  if ( $rev->isDeleted( Revision::DELETED_RESTRICTED ) ) {
448  $vals["{$prefix}suppressed"] = true;
449  }
450  }
451 
452  if ( !empty( $rev->isArchive ) ) {
453  $this->getMain()->setCacheMode( 'private' );
454  $vals["{$prefix}archive"] = true;
455  }
456  }
457  }
458 
459  public function getAllowedParams() {
460  // Parameters for the 'from' and 'to' content
461  $fromToParams = [
462  'title' => null,
463  'id' => [
464  ApiBase::PARAM_TYPE => 'integer'
465  ],
466  'rev' => [
467  ApiBase::PARAM_TYPE => 'integer'
468  ],
469  'text' => [
470  ApiBase::PARAM_TYPE => 'text'
471  ],
472  'section' => null,
473  'pst' => false,
474  'contentformat' => [
476  ],
477  'contentmodel' => [
479  ]
480  ];
481 
482  $ret = [];
483  foreach ( $fromToParams as $k => $v ) {
484  $ret["from$k"] = $v;
485  }
486  foreach ( $fromToParams as $k => $v ) {
487  $ret["to$k"] = $v;
488  }
489 
491  $ret,
492  [ 'torelative' => [ ApiBase::PARAM_TYPE => [ 'prev', 'next', 'cur' ], ] ],
493  'torev'
494  );
495 
496  $ret['prop'] = [
497  ApiBase::PARAM_DFLT => 'diff|ids|title',
499  'diff',
500  'diffsize',
501  'rel',
502  'ids',
503  'title',
504  'user',
505  'comment',
506  'parsedcomment',
507  'size',
508  ],
509  ApiBase::PARAM_ISMULTI => true,
511  ];
512 
513  return $ret;
514  }
515 
516  protected function getExamplesMessages() {
517  return [
518  'action=compare&fromrev=1&torev=2'
519  => 'apihelp-compare-example-1',
520  ];
521  }
522 }
ApiComparePages\guessTitleAndModel
guessTitleAndModel()
Guess an appropriate default Title and content model for this request.
Definition: ApiComparePages.php:188
Revision\newFromArchiveRow
static newFromArchiveRow( $row, $overrides=[])
Make a fake revision object from an archive table row.
Definition: Revision.php:167
Revision\DELETED_USER
const DELETED_USER
Definition: Revision.php:49
wfArrayInsertAfter
wfArrayInsertAfter(array $array, array $insert, $after)
Insert array into another array after the specified KEY
Definition: GlobalFunctions.php:238
ContextSource\$context
IContextSource $context
Definition: ContextSource.php:33
Revision\DELETED_RESTRICTED
const DELETED_RESTRICTED
Definition: Revision.php:50
Title\newFromText
static newFromText( $text, $defaultNamespace=NS_MAIN)
Create a new Title from text, such as what one would find in a link.
Definition: Title.php:273
ContextSource\getContext
getContext()
Get the base IContextSource object.
Definition: ContextSource.php:40
ContentHandler\getAllContentFormats
static getAllContentFormats()
Definition: ContentHandler.php:376
ApiBase\addWarning
addWarning( $msg, $code=null, $data=null)
Add a warning for this module.
Definition: ApiBase.php:1819
Revision\DELETED_COMMENT
const DELETED_COMMENT
Definition: Revision.php:48
ApiComparePages\setVals
setVals(&$vals, $prefix, $rev)
Set value fields from a Revision object.
Definition: ApiComparePages.php:398
Revision\newFromId
static newFromId( $id, $flags=0)
Load a page revision from a given revision ID number.
Definition: Revision.php:114
array
the array() calling protocol came about after MediaWiki 1.4rc1.
ApiBase\dieWithError
dieWithError( $msg, $code=null, $data=null, $httpCode=null)
Abort execution with an error.
Definition: ApiBase.php:1895
ApiComparePages\$props
$props
Definition: ApiComparePages.php:24
$ret
null means default in associative array with keys and values unescaped Should be merged with default with a value of false meaning to suppress the attribute in associative array with keys and values unescaped noclasses & $ret
Definition: hooks.txt:2005
ApiBase\PARAM_TYPE
const PARAM_TYPE
(string|string[]) Either an array of allowed value strings, or a string type as described below.
Definition: ApiBase.php:87
ApiBase\getResult
getResult()
Get the result object.
Definition: ApiBase.php:641
ApiComparePages\$guessedTitle
$guessedTitle
Definition: ApiComparePages.php:24
$params
$params
Definition: styleTest.css.php:40
Revision\getArchiveQueryInfo
static getArchiveQueryInfo()
Return the tables, fields, and join conditions to be selected to create a new archived revision objec...
Definition: Revision.php:506
ApiBase\getDB
getDB()
Gets a default replica DB connection object.
Definition: ApiBase.php:669
ApiComparePages\getDiffContent
getDiffContent( $prefix, array $params)
Get the Revision and Content for one side of the diff.
Definition: ApiComparePages.php:270
ApiResult\NO_SIZE_CHECK
const NO_SIZE_CHECK
For addValue() and similar functions, do not check size while adding a value Don't use this unless yo...
Definition: ApiResult.php:56
CONTENT_MODEL_WIKITEXT
const CONTENT_MODEL_WIKITEXT
Definition: Defines.php:245
ContextSource\getUser
getUser()
Definition: ContextSource.php:120
php
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 $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:37
ApiBase
This abstract class implements many basic API functions, and is the base of all API classes.
Definition: ApiBase.php:37
Revision\FOR_THIS_USER
const FOR_THIS_USER
Definition: Revision.php:56
ApiResult\setContentValue
static setContentValue(array &$arr, $name, $value, $flags=0)
Add an output value to the array by name and mark as META_CONTENT.
Definition: ApiResult.php:478
DerivativeContext
An IContextSource implementation which will inherit context from another source but allow individual ...
Definition: DerivativeContext.php:30
ContentHandler\getContentModels
static getContentModels()
Definition: ContentHandler.php:368
ApiComparePages\$guessedModel
$guessedModel
Definition: ApiComparePages.php:24
ApiComparePages
Definition: ApiComparePages.php:22
MWContentSerializationException
Exception representing a failure to serialize or unserialize a content object.
Definition: MWContentSerializationException.php:7
ApiBase\dieWithException
dieWithException( $exception, array $options=[])
Abort execution with an error derived from an exception.
Definition: ApiBase.php:1907
$title
namespace and then decline to actually register it file or subcat img or subcat $title
Definition: hooks.txt:964
ApiMessage\create
static create( $msg, $code=null, array $data=null)
Create an IApiMessage for the message.
Definition: ApiMessage.php:219
ApiComparePages\$guessed
$guessed
Definition: ApiComparePages.php:24
list
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
Definition: deferred.txt:11
ContentHandler\makeContent
static makeContent( $text, Title $title=null, $modelId=null, $format=null)
Convenience function for creating a Content object from a given textual representation.
Definition: ContentHandler.php:129
ApiBase\extractRequestParams
extractRequestParams( $parseLimit=true)
Using getAllowedParams(), this function makes an array of the values provided by the user,...
Definition: ApiBase.php:749
ParserOptions\newFromContext
static newFromContext(IContextSource $context)
Get a ParserOptions object from a IContextSource object.
Definition: ParserOptions.php:1005
wfEscapeWikiText
wfEscapeWikiText( $text)
Escapes the given text so that it may be output using addWikiText() without any linking,...
Definition: GlobalFunctions.php:1643
Revision\RAW
const RAW
Definition: Revision.php:57
Linker\formatComment
static formatComment( $comment, $title=null, $local=false, $wikiId=null)
This function is called by all recent changes variants, by the page history, and by the user contribu...
Definition: Linker.php:1109
$rev
presenting them properly to the user as errors is done by the caller return true use this to change the list i e etc $rev
Definition: hooks.txt:1777
ApiBase\requireAtLeastOneParameter
requireAtLeastOneParameter( $params, $required)
Die if none of a certain set of parameters is set and not false.
Definition: ApiBase.php:851
ApiBase\PARAM_DFLT
const PARAM_DFLT
(null|boolean|integer|string) Default value of the parameter.
Definition: ApiBase.php:48
ApiComparePages\getAllowedParams
getAllowedParams()
Returns an array of allowed parameters (parameter name) => (default value) or (parameter name) => (ar...
Definition: ApiComparePages.php:459
as
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
Definition: distributors.txt:22
ApiComparePages\execute
execute()
Evaluates the parameters, performs the requested query, and sets up the result.
Definition: ApiComparePages.php:26
ApiBase\getModuleName
getModuleName()
Get the name of the module being executed by this instance.
Definition: ApiBase.php:521
ApiBase\PARAM_ISMULTI
const PARAM_ISMULTI
(boolean) Accept multiple pipe-separated values for this parameter (e.g.
Definition: ApiBase.php:51
ApiComparePages\getExamplesMessages
getExamplesMessages()
Returns usage examples for this module.
Definition: ApiComparePages.php:516
ApiBase\getMain
getMain()
Get the main module.
Definition: ApiBase.php:537
ApiBase\PARAM_HELP_MSG_PER_VALUE
const PARAM_HELP_MSG_PER_VALUE
((string|array|Message)[]) When PARAM_TYPE is an array, this is an array mapping those values to $msg...
Definition: ApiBase.php:157
Title\newFromID
static newFromID( $id, $flags=0)
Create a new Title from an article ID.
Definition: Title.php:416
Revision\DELETED_TEXT
const DELETED_TEXT
Definition: Revision.php:47
ApiQueryBase\addTitleInfo
static addTitleInfo(&$arr, $title, $prefix='')
Add information (title and namespace) about a Title object to a result array.
Definition: ApiQueryBase.php:482