MediaWiki  REL1_31
cleanupInvalidDbKeys.php
Go to the documentation of this file.
1 <?php
24 require_once __DIR__ . '/Maintenance.php';
25 
34  protected static $tables = [
35  // Data tables
36  [ 'page', 'page' ],
37  [ 'redirect', 'rd', 'idField' => 'rd_from' ],
38  [ 'archive', 'ar' ],
39  [ 'logging', 'log' ],
40  [ 'protected_titles', 'pt', 'idField' => 0 ],
41  [ 'category', 'cat', 'nsField' => 14 ],
42  [ 'recentchanges', 'rc' ],
43  [ 'watchlist', 'wl' ],
44  // The querycache tables' qc(c)_title and qcc_titletwo may contain titles,
45  // but also usernames or other things like that, so we leave them alone
46 
47  // Links tables
48  [ 'pagelinks', 'pl', 'idField' => 'pl_from' ],
49  [ 'templatelinks', 'tl', 'idField' => 'tl_from' ],
50  [ 'categorylinks', 'cl', 'idField' => 'cl_from', 'nsField' => 14, 'titleField' => 'cl_to' ],
51  ];
52 
53  public function __construct() {
54  parent::__construct();
55  $this->addDescription( <<<'TEXT'
56 This script cleans up the title fields in various tables to remove entries that
57 will be rejected by the constructor of TitleValue. This constructor throws an
58 exception when invalid data is encountered, which will not normally occur on
59 regular page views, but can happen on query special pages.
60 
61 The script targets titles matching the regular expression /^_|[ \r\n\t]|_$/.
62 Because any foreign key relationships involving these titles will already be
63 broken, the titles are corrected to a valid version or the rows are deleted
64 entirely, depending on the table.
65 
66 The script runs with the expectation that STDOUT is redirected to a file.
67 TEXT
68  );
69  $this->addOption( 'fix', 'Actually clean up invalid titles. If this parameter is ' .
70  'not specified, the script will report invalid titles but not clean them up.',
71  false, false );
72  $this->addOption( 'table', 'The table(s) to process. This option can be specified ' .
73  'more than once (e.g. -t category -t watchlist). If not specified, all available ' .
74  'tables will be processed. Available tables are: ' .
75  implode( ', ', array_column( static::$tables, 0 ) ), false, true, 't', true );
76 
77  $this->setBatchSize( 500 );
78  }
79 
80  public function execute() {
81  $tablesToProcess = $this->getOption( 'table' );
82  foreach ( static::$tables as $tableParams ) {
83  if ( !$tablesToProcess || in_array( $tableParams[0], $tablesToProcess ) ) {
84  $this->cleanupTable( $tableParams );
85  }
86  }
87 
88  $this->outputStatus( 'Done!' );
89  if ( $this->hasOption( 'fix' ) ) {
90  $this->outputStatus( ' Cleaned up invalid DB keys on ' . wfWikiID() . "!\n" );
91  }
92  }
93 
101  protected function outputStatus( $str, $channel = null ) {
102  // Make it easier to find progress lines in the STDOUT log
103  if ( trim( $str ) ) {
104  fwrite( STDOUT, '*** ' . trim( $str ) . "\n" );
105  }
106  fwrite( STDERR, $str );
107  }
108 
114  protected function writeToReport( $str ) {
115  fwrite( STDOUT, $str );
116  }
117 
123  protected function cleanupTable( $tableParams ) {
124  $table = $tableParams[0];
125  $prefix = $tableParams[1];
126  $idField = isset( $tableParams['idField'] ) ?
127  $tableParams['idField'] :
128  "{$prefix}_id";
129  $nsField = isset( $tableParams['nsField'] ) ?
130  $tableParams['nsField'] :
131  "{$prefix}_namespace";
132  $titleField = isset( $tableParams['titleField'] ) ?
133  $tableParams['titleField'] :
134  "{$prefix}_title";
135 
136  $this->outputStatus( "Looking for invalid $titleField entries in $table...\n" );
137 
138  // Do all the select queries on the replicas, as they are slow (they use
139  // unanchored LIKEs). Naturally this could cause problems if rows are
140  // modified after selecting and before deleting/updating, but working on
141  // the hypothesis that invalid rows will be old and in all likelihood
142  // unreferenced, we should be fine to do it like this.
143  $dbr = $this->getDB( DB_REPLICA, 'vslow' );
144 
145  // Find all TitleValue-invalid titles.
146  $percent = $dbr->anyString(); // DBMS-agnostic equivalent of '%' LIKE wildcard
147  $res = $dbr->select(
148  $table,
149  [
150  'id' => $idField,
151  'ns' => $nsField,
152  'title' => $titleField,
153  ],
154  // The REGEXP operator is not cross-DBMS, so we have to use lots of LIKEs
155  [ $dbr->makeList( [
156  $titleField . $dbr->buildLike( $percent, ' ', $percent ),
157  $titleField . $dbr->buildLike( $percent, "\r", $percent ),
158  $titleField . $dbr->buildLike( $percent, "\n", $percent ),
159  $titleField . $dbr->buildLike( $percent, "\t", $percent ),
160  $titleField . $dbr->buildLike( '_', $percent ),
161  $titleField . $dbr->buildLike( $percent, '_' ),
162  ], LIST_OR ) ],
163  __METHOD__,
164  [ 'LIMIT' => $this->getBatchSize() ]
165  );
166 
167  $this->outputStatus( "Number of invalid rows: " . $res->numRows() . "\n" );
168  if ( !$res->numRows() ) {
169  $this->outputStatus( "\n" );
170  return;
171  }
172 
173  // Write a table of titles to the report file. Also keep a list of the found
174  // IDs, as we might need it later for DB updates
175  $this->writeToReport( sprintf( "%10s | ns | dbkey\n", $idField ) );
176  $ids = [];
177  foreach ( $res as $row ) {
178  $this->writeToReport( sprintf( "%10d | %3d | %s\n", $row->id, $row->ns, $row->title ) );
179  $ids[] = $row->id;
180  }
181 
182  // If we're doing a dry run, output the new titles we would use for the UPDATE
183  // queries (if relevant), and finish
184  if ( !$this->hasOption( 'fix' ) ) {
185  if ( $table === 'logging' || $table === 'archive' ) {
186  $this->writeToReport( "The following updates would be run with the --fix flag:\n" );
187  foreach ( $res as $row ) {
188  $newTitle = self::makeValidTitle( $row->title );
189  $this->writeToReport(
190  "$idField={$row->id}: update '{$row->title}' to '$newTitle'\n" );
191  }
192  }
193 
194  if ( $table !== 'page' && $table !== 'redirect' ) {
195  $this->outputStatus( "Run with --fix to clean up these rows\n" );
196  }
197  $this->outputStatus( "\n" );
198  return;
199  }
200 
201  // Fix the bad data, using different logic for the various tables
202  $dbw = $this->getDB( DB_MASTER );
203  switch ( $table ) {
204  case 'page':
205  case 'redirect':
206  // This shouldn't happen on production wikis, and we already have a script
207  // to handle 'page' rows anyway, so just notify the user and let them decide
208  // what to do next.
209  $this->outputStatus( <<<TEXT
210 IMPORTANT: This script does not fix invalid entries in the $table table.
211 Consider repairing these rows, and rows in related tables, by hand.
212 You may like to run, or borrow logic from, the cleanupTitles.php script.
213 
214 TEXT
215  );
216  break;
217 
218  case 'archive':
219  case 'logging':
220  // Rename the title to a corrected equivalent. Any foreign key relationships
221  // to the page_title field are already broken, so this will just make sure
222  // users can still access the log entries/deleted revisions from the interface
223  // using a valid page title.
224  $this->outputStatus(
225  "Updating these rows, setting $titleField to the closest valid DB key...\n" );
226  $affectedRowCount = 0;
227  foreach ( $res as $row ) {
228  $newTitle = self::makeValidTitle( $row->title );
229  $this->writeToReport(
230  "$idField={$row->id}: updating '{$row->title}' to '$newTitle'\n" );
231 
232  $dbw->update( $table,
233  [ $titleField => $newTitle ],
234  [ $idField => $row->id ],
235  __METHOD__ );
236  $affectedRowCount += $dbw->affectedRows();
237  }
238  wfWaitForSlaves();
239  $this->outputStatus( "Updated $affectedRowCount rows on $table.\n" );
240 
241  break;
242 
243  case 'recentchanges':
244  case 'watchlist':
245  case 'category':
246  // Since these broken titles can't exist, there's really nothing to watch,
247  // nothing can be categorised in them, and they can't have been changed
248  // recently, so we can just remove these rows.
249  $this->outputStatus( "Deleting invalid $table rows...\n" );
250  $dbw->delete( $table, [ $idField => $ids ], __METHOD__ );
251  wfWaitForSlaves();
252  $this->outputStatus( 'Deleted ' . $dbw->affectedRows() . " rows from $table.\n" );
253  break;
254 
255  case 'protected_titles':
256  // Since these broken titles can't exist, there's really nothing to protect,
257  // so we can just remove these rows. Made more complicated by this table
258  // not having an ID field
259  $this->outputStatus( "Deleting invalid $table rows...\n" );
260  $affectedRowCount = 0;
261  foreach ( $res as $row ) {
262  $dbw->delete( $table,
263  [ $nsField => $row->ns, $titleField => $row->title ],
264  __METHOD__ );
265  $affectedRowCount += $dbw->affectedRows();
266  }
267  wfWaitForSlaves();
268  $this->outputStatus( "Deleted $affectedRowCount rows from $table.\n" );
269  break;
270 
271  case 'pagelinks':
272  case 'templatelinks':
273  case 'categorylinks':
274  // Update links tables for each page where these bogus links are supposedly
275  // located. If the invalid rows don't go away after these jobs go through,
276  // they're probably being added by a buggy hook.
277  $this->outputStatus( "Queueing link update jobs for the pages in $idField...\n" );
278  foreach ( $res as $row ) {
279  $wp = WikiPage::newFromID( $row->id );
280  if ( $wp ) {
282  } else {
283  // This link entry points to a nonexistent page, so just get rid of it
284  $dbw->delete( $table,
285  [ $idField => $row->id, $nsField => $row->ns, $titleField => $row->title ],
286  __METHOD__ );
287  }
288  }
289  wfWaitForSlaves();
290  $this->outputStatus( "Link update jobs have been added to the job queue.\n" );
291  break;
292  }
293 
294  $this->outputStatus( "\n" );
295  return;
296  }
297 
304  protected static function makeValidTitle( $invalidTitle ) {
305  return strtr( trim( $invalidTitle, '_' ),
306  [ ' ' => '_', "\r" => '', "\n" => '', "\t" => '_' ] );
307  }
308 }
309 
311 require_once RUN_MAINTENANCE_IF_MAIN;
array
the array() calling protocol came about after MediaWiki 1.4rc1.
is
We use the convention $dbr for read and $dbw for write to help you keep track of whether the database object is a the world will explode Or to be a subsequent write query which succeeded on the master may fail when replicated to the slave due to a unique key collision Replication on the slave will stop and it may take hours to repair the database and get it back online Setting read_only in my cnf on the slave will avoid this but given the dire we prefer to have as many checks as possible We provide a but the wrapper functions like please read the documentation for except in special pages derived from QueryPage It s a common pitfall for new developers to submit code containing SQL queries which examine huge numbers of rows Remember that COUNT * is(N), counting rows in atable is like counting beans in a bucket.------------------------------------------------------------------------ Replication------------------------------------------------------------------------The largest installation of MediaWiki, Wikimedia, uses a large set ofslave MySQL servers replicating writes made to a master MySQL server. Itis important to understand the issues associated with this setup if youwant to write code destined for Wikipedia.It 's often the case that the best algorithm to use for a given taskdepends on whether or not replication is in use. Due to our unabashedWikipedia-centrism, we often just use the replication-friendly version, but if you like, you can use wfGetLB() ->getServerCount() > 1 tocheck to see if replication is in use.===Lag===Lag primarily occurs when large write queries are sent to the master.Writes on the master are executed in parallel, but they are executed inserial when they are replicated to the slaves. The master writes thequery to the binlog when the transaction is committed. The slaves pollthe binlog and start executing the query as soon as it appears. They canservice reads while they are performing a write query, but will not readanything more from the binlog and thus will perform no more writes. Thismeans that if the write query runs for a long time, the slaves will lagbehind the master for the time it takes for the write query to complete.Lag can be exacerbated by high read load. MediaWiki 's load balancer willstop sending reads to a slave when it is lagged by more than 30 seconds.If the load ratios are set incorrectly, or if there is too much loadgenerally, this may lead to a slave permanently hovering around 30seconds lag.If all slaves are lagged by more than 30 seconds, MediaWiki will stopwriting to the database. All edits and other write operations will berefused, with an error returned to the user. This gives the slaves achance to catch up. Before we had this mechanism, the slaves wouldregularly lag by several minutes, making review of recent editsdifficult.In addition to this, MediaWiki attempts to ensure that the user seesevents occurring on the wiki in chronological order. A few seconds of lagcan be tolerated, as long as the user sees a consistent picture fromsubsequent requests. This is done by saving the master binlog positionin the session, and then at the start of each request, waiting for theslave to catch up to that position before doing any reads from it. Ifthis wait times out, reads are allowed anyway, but the request isconsidered to be in "lagged slave mode". Lagged slave mode can bechecked by calling wfGetLB() ->getLaggedSlaveMode(). The onlypractical consequence at present is a warning displayed in the pagefooter.===Lag avoidance===To avoid excessive lag, queries which write large numbers of rows shouldbe split up, generally to write one row at a time. Multi-row INSERT ...SELECT queries are the worst offenders should be avoided altogether.Instead do the select first and then the insert.===Working with lag===Despite our best efforts, it 's not practical to guarantee a low-lagenvironment. Lag will usually be less than one second, but mayoccasionally be up to 30 seconds. For scalability, it 's very importantto keep load on the master low, so simply sending all your queries tothe master is not the answer. So when you have a genuine need forup-to-date data, the following approach is advised:1) Do a quick query to the master for a sequence number or timestamp 2) Run the full query on the slave and check if it matches the data you gotfrom the master 3) If it doesn 't, run the full query on the masterTo avoid swamping the master every time the slaves lag, use of thisapproach should be kept to a minimum. In most cases you should just readfrom the slave and let the user deal with the delay.------------------------------------------------------------------------ Lock contention------------------------------------------------------------------------Due to the high write rate on Wikipedia(and some other wikis), MediaWiki developers need to be very careful to structure their writesto avoid long-lasting locks. By default, MediaWiki opens a transactionat the first query, and commits it before the output is sent. Locks willbe held from the time when the query is done until the commit. So youcan reduce lock time by doing as much processing as possible before youdo your write queries.Often this approach is not good enough, and it becomes necessary toenclose small groups of queries in their own transaction. Use thefollowing syntax:$dbw=wfGetDB(DB_MASTER
n
while(( $__line=Maintenance::readconsole()) !==false) print n
Definition: eval.php:64
Maintenance\addDescription
addDescription( $text)
Set the description text.
Definition: Maintenance.php:291
CleanupInvalidDbKeys\outputStatus
outputStatus( $str, $channel=null)
Prints text to STDOUT, and STDERR if STDOUT was redirected to a file.
Definition: cleanupInvalidDbKeys.php:101
RUN_MAINTENANCE_IF_MAIN
require_once RUN_MAINTENANCE_IF_MAIN
Definition: maintenance.txt:50
page
target page
Definition: All_system_messages.txt:1267
$res
$res
Definition: database.txt:21
Maintenance
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: maintenance.txt:39
CleanupInvalidDbKeys\writeToReport
writeToReport( $str)
Prints text to STDOUT.
Definition: cleanupInvalidDbKeys.php:114
wfWaitForSlaves
wfWaitForSlaves( $ifWritesSince=null, $wiki=false, $cluster=false, $timeout=null)
Waits for the replica DBs to catch up to the master position.
Definition: GlobalFunctions.php:2966
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
pages
The ContentHandler facility adds support for arbitrary content types on wiki pages
Definition: contenthandler.txt:1
$dbr
$dbr
Definition: testCompression.php:50
key
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 etc Handles the details of getting and saving to the user table of the and dealing with sessions and cookies OutputPage Encapsulates the entire HTML page that will be sent in response to any server request It is used by calling its functions to add in any and then calling but I prefer the flexibility This should also do the output encoding The system allocates a global one in $wgOut Title Represents the title of an and does all the work of translating among various forms such as plain database key
Definition: design.txt:26
file
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 and make changes or fix bugs In we can take all the code that deals with the little used title reversing we can concentrate it all in an extension file
Definition: hooks.txt:106
CleanupInvalidDbKeys\makeValidTitle
static makeValidTitle( $invalidTitle)
Fix possible validation issues in the given title (DB key).
Definition: cleanupInvalidDbKeys.php:304
LIST_OR
const LIST_OR
Definition: Defines.php:56
table
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 then executing the whole list after the page is displayed We don t do anything smart like collating updates to the same table or such because the list is almost always going to have just one item on if so it s not worth the trouble Since there is a job queue in the jobs table
Definition: deferred.txt:16
CleanupInvalidDbKeys\execute
execute()
Do the actual work.
Definition: cleanupInvalidDbKeys.php:80
title
title
Definition: parserTests.txt:219
Maintenance\addOption
addOption( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
Definition: Maintenance.php:219
version
Prior to version
Definition: maintenance.txt:1
CleanupInvalidDbKeys\__construct
__construct()
Default constructor.
Definition: cleanupInvalidDbKeys.php:53
DB_REPLICA
const DB_REPLICA
Definition: defines.php:25
DB_MASTER
const DB_MASTER
Definition: defines.php:26
by
Apache License January AND DISTRIBUTION Definitions License shall mean the terms and conditions for and distribution as defined by Sections through of this document Licensor shall mean the copyright owner or entity authorized by the copyright owner that is granting the License Legal Entity shall mean the union of the acting entity and all other entities that control are controlled by or are under common control with that entity For the purposes of this definition control direct or to cause the direction or management of such whether by contract or including but not limited to software source documentation and configuration files Object form shall mean any form resulting from mechanical transformation or translation of a Source including but not limited to compiled object generated and conversions to other media types Work shall mean the work of whether in Source or Object made available under the as indicated by a copyright notice that is included in or attached to the whether in Source or Object that is based or other modifications as a an original work of authorship For the purposes of this Derivative Works shall not include works that remain separable or merely the Work and Derivative Works thereof Contribution shall mean any work of including the original version of the Work and any modifications or additions to that Work or Derivative Works that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner For the purposes of this submitted means any form of or written communication sent to the Licensor or its including but not limited to communication on electronic mailing source code control and issue tracking systems that are managed by
Definition: APACHE-LICENSE-2.0.txt:58
query
For a write query
Definition: database.txt:26
will
</td >< td > &</td >< td > t want your writing to be edited mercilessly and redistributed at will
Definition: All_system_messages.txt:914
wfWikiID
wfWikiID()
Get an ASCII string identifying this wiki This is used as a prefix in memcached keys.
Definition: GlobalFunctions.php:2763
occur
return true to allow those checks to occur
Definition: hooks.txt:1482
WikiPage\newFromID
static newFromID( $id, $from='fromdb')
Constructor from a page id.
Definition: WikiPage.php:153
up
static configuration should be added through ResourceLoaderGetConfigVars instead can be used to get the real title after the basic globals have been set up
Definition: hooks.txt:2245
and
and(b) You must cause any modified files to carry prominent notices stating that You changed the files
CleanupInvalidDbKeys\$tables
static array $tables
List of tables to clean up, and the field prefix for that table.
Definition: cleanupInvalidDbKeys.php:34
CleanupInvalidDbKeys\cleanupTable
cleanupTable( $tableParams)
Identifies, and optionally cleans up, invalid titles.
Definition: cleanupInvalidDbKeys.php:123
broken
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 broken
Definition: hooks.txt:2001
like
For a write use something like
Definition: database.txt:28
Maintenance\getOption
getOption( $name, $default=null)
Get an option, or return the default.
Definition: Maintenance.php:254
$tables
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 & $tables
Definition: hooks.txt:1015
on
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
Definition: hooks.txt:86
are
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
Definition: contenthandler.txt:9
entirely
globals will be eliminated from MediaWiki entirely
Definition: globals.txt:29
or
or
Definition: APACHE-LICENSE-2.0.txt:114
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
Maintenance\getDB
getDB( $db, $groups=[], $wiki=false)
Returns a database to be used by current maintenance script.
Definition: Maintenance.php:1309
from
Apache License January AND DISTRIBUTION Definitions License shall mean the terms and conditions for and distribution as defined by Sections through of this document Licensor shall mean the copyright owner or entity authorized by the copyright owner that is granting the License Legal Entity shall mean the union of the acting entity and all other entities that control are controlled by or are under common control with that entity For the purposes of this definition control direct or to cause the direction or management of such whether by contract or including but not limited to software source documentation and configuration files Object form shall mean any form resulting from mechanical transformation or translation of a Source including but not limited to compiled object generated and conversions to other media types Work shall mean the work of whether in Source or Object made available under the as indicated by a copyright notice that is included in or attached to the whether in Source or Object that is based or other modifications as a an original work of authorship For the purposes of this Derivative Works shall not include works that remain separable from
Definition: APACHE-LICENSE-2.0.txt:46
in
null for the wiki Added in
Definition: hooks.txt:1591
of
globals txt Globals are evil The original MediaWiki code relied on globals for processing context far too often MediaWiki development since then has been a story of slowly moving context out of global variables and into objects Storing processing context in object member variables allows those objects to be reused in a much more flexible way Consider the elegance of
database rows
Definition: globals.txt:10
that
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 then executing the whole list after the page is displayed We don t do anything smart like collating updates to the same table or such because the list is almost always going to have just one item on if that
Definition: deferred.txt:13
class
you have access to all of the normal MediaWiki so you can get a DB use the etc For full docs on the Maintenance class
Definition: maintenance.txt:56
Maintenance\hasOption
hasOption( $name)
Checks to see if a particular param exists.
Definition: Maintenance.php:240
$maintClass
$maintClass
Definition: cleanupInvalidDbKeys.php:310
Maintenance\setBatchSize
setBatchSize( $s=0)
Set the batch size.
Definition: Maintenance.php:329
CleanupInvalidDbKeys
Maintenance script that cleans up invalid titles in various tables.
Definition: cleanupInvalidDbKeys.php:32
data
and how to run hooks for an and one after Each event has a preferably in CamelCase For ArticleDelete hook A clump of code and data that should be run when an event happens This can be either a function and a chunk of data
Definition: hooks.txt:18
TitleValue
Represents a page (or page fragment) title within MediaWiki.
Definition: TitleValue.php:35