MediaWiki REL1_30
renameDbPrefix.php
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1<?php
26require_once __DIR__ . '/Maintenance.php';
27
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() {
42 }
43
44 public function execute() {
45 global $wgDBname;
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 = $this->getDB( 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";
94require_once RUN_MAINTENANCE_IF_MAIN;
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
getDB( $db, $groups=[], $wiki=false)
Returns a database to be used by current maintenance script.
addOption( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
getOption( $name, $default=null)
Get an option, or return the default.
Maintenance script that changes the prefix of database tables.
getDbType()
Does the script need different DB access? By default, we give Maintenance scripts normal rights to th...
__construct()
Default constructor.
execute()
Do the actual work.
$res
Definition database.txt:21
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 output() to send it all. It could be easily changed to send incrementally if that becomes useful
do that in ParserLimitReportFormat instead use this to modify the parameters of the image all existing parser cache entries will be invalid To avoid you ll need to handle that somehow(e.g. with the RejectParserCacheValue hook) because MediaWiki won 't do it for you. & $defaults error
Definition hooks.txt:2581
require_once RUN_MAINTENANCE_IF_MAIN
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
const DB_MASTER
Definition defines.php:26
$maintClass