MediaWiki  1.23.2
renameDbPrefix.php
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1 <?php
26 require_once __DIR__ . '/Maintenance.php';
27 
33 class RenameDbPrefix extends Maintenance {
34  public function __construct() {
35  parent::__construct();
36  $this->addOption( "old", "Old db prefix [0 for none]", true, true );
37  $this->addOption( "new", "New db prefix [0 for none]", true, true );
38  }
39 
40  public function getDbType() {
41  return Maintenance::DB_ADMIN;
42  }
43 
44  public function execute() {
46 
47  // Allow for no old prefix
48  if ( $this->getOption( 'old', 0 ) === '0' ) {
49  $old = '';
50  } else {
51  // Use nice safe, sane, prefixes
52  preg_match( '/^[a-zA-Z]+_$/', $this->getOption( 'old' ), $m );
53  $old = isset( $m[0] ) ? $m[0] : false;
54  }
55  // Allow for no new prefix
56  if ( $this->getOption( 'new', 0 ) === '0' ) {
57  $new = '';
58  } else {
59  // Use nice safe, sane, prefixes
60  preg_match( '/^[a-zA-Z]+_$/', $this->getOption( 'new' ), $m );
61  $new = isset( $m[0] ) ? $m[0] : false;
62  }
63 
64  if ( $old === false || $new === false ) {
65  $this->error( "Invalid prefix!", true );
66  }
67  if ( $old === $new ) {
68  $this->output( "Same prefix. Nothing to rename!\n", true );
69  }
70 
71  $this->output( "Renaming DB prefix for tables of $wgDBname from '$old' to '$new'\n" );
72  $count = 0;
73 
74  $dbw = wfGetDB( DB_MASTER );
75  $res = $dbw->query( "SHOW TABLES " . $dbw->buildLike( $old, $dbw->anyString() ) );
76  foreach ( $res as $row ) {
77  // XXX: odd syntax. MySQL outputs an oddly cased "Tables of X"
78  // sort of message. Best not to try $row->x stuff...
79  $fields = get_object_vars( $row );
80  // Silly for loop over one field...
81  foreach ( $fields as $table ) {
82  // $old should be regexp safe ([a-zA-Z_])
83  $newTable = preg_replace( '/^' . $old . '/', $new, $table );
84  $this->output( "Renaming table $table to $newTable\n" );
85  $dbw->query( "RENAME TABLE $table TO $newTable" );
86  }
87  $count++;
88  }
89  $this->output( "Done! [$count tables]\n" );
90  }
91 }
92 
93 $maintClass = "RenameDbPrefix";
94 require_once RUN_MAINTENANCE_IF_MAIN;
RenameDbPrefix\execute
execute()
Do the actual work.
Definition: renameDbPrefix.php:44
DB_MASTER
const DB_MASTER
Definition: Defines.php:56
$maintClass
$maintClass
Definition: renameDbPrefix.php:93
php
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Definition: skin.txt:62
wfGetDB
& wfGetDB( $db, $groups=array(), $wiki=false)
Get a Database object.
Definition: GlobalFunctions.php:3650
Maintenance\addOption
addOption( $name, $description, $required=false, $withArg=false, $shortName=false)
Add a parameter to the script.
Definition: Maintenance.php:169
RenameDbPrefix\__construct
__construct()
Default constructor.
Definition: renameDbPrefix.php:34
RUN_MAINTENANCE_IF_MAIN
require_once RUN_MAINTENANCE_IF_MAIN
Definition: maintenance.txt:50
Maintenance
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: maintenance.txt:39
$wgDBname
controlled by $wgMainCacheType controlled by $wgParserCacheType controlled by $wgMessageCacheType If you set CACHE_NONE to one of the three control default value for MediaWiki still create a but requests to it are no ops and we always fall through to the database If the cache daemon can t be it should also disable itself fairly smoothly By $wgMemc is used but when it is $parserMemc or $messageMemc this is mentioned $wgDBname
Definition: memcached.txt:96
RenameDbPrefix\getDbType
getDbType()
Does the script need different DB access? By default, we give Maintenance scripts normal rights to th...
Definition: renameDbPrefix.php:40
global
when a variable name is used in a it is silently declared as a new masking the global
Definition: design.txt:93
Maintenance\DB_ADMIN
const DB_ADMIN
Definition: Maintenance.php:59
RenameDbPrefix
Maintenance script that changes the prefix of database tables.
Definition: renameDbPrefix.php:33
$count
$count
Definition: UtfNormalTest2.php:96
Maintenance\getOption
getOption( $name, $default=null)
Get an option, or return the default.
Definition: Maintenance.php:191
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:9
Maintenance\error
error( $err, $die=0)
Throw an error to the user.
Definition: Maintenance.php:333
Maintenance\output
output( $out, $channel=null)
Throw some output to the user.
Definition: Maintenance.php:314
$res
$res
Definition: database.txt:21