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1 | <?php |
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2 | /** |
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3 | * Deletes all pages in the MediaWiki namespace which were last edited by |
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4 | * "MediaWiki default". |
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5 | * |
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6 | * This program is free software; you can redistribute it and/or modify |
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7 | * it under the terms of the GNU General Public License as published by |
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8 | * the Free Software Foundation; either version 2 of the License, or |
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9 | * (at your option) any later version. |
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10 | * |
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11 | * This program is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | * GNU General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU General Public License along |
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17 | * with this program; if not, write to the Free Software Foundation, Inc., |
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18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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19 | * http://www.gnu.org/copyleft/gpl.html |
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20 | * |
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21 | * @file |
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22 | * @ingroup Maintenance |
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23 | */ |
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24 | |||
25 | require_once __DIR__ . '/Maintenance.php'; |
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26 | |||
27 | /** |
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28 | * Maintenance script that deletes all pages in the MediaWiki namespace |
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29 | * which were last edited by "MediaWiki default". |
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30 | * |
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31 | * @ingroup Maintenance |
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32 | */ |
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33 | class DeleteDefaultMessages extends Maintenance { |
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34 | public function __construct() { |
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35 | parent::__construct(); |
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36 | $this->addDescription( 'Deletes all pages in the MediaWiki namespace' . |
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37 | ' which were last edited by "MediaWiki default"' ); |
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38 | } |
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39 | |||
40 | public function execute() { |
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41 | global $wgUser; |
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42 | |||
43 | $this->output( "Checking existence of old default messages..." ); |
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44 | $dbr = $this->getDB( DB_REPLICA ); |
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45 | $res = $dbr->select( [ 'page', 'revision' ], |
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46 | [ 'page_namespace', 'page_title' ], |
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47 | [ |
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48 | 'page_namespace' => NS_MEDIAWIKI, |
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49 | 'page_latest=rev_id', |
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50 | 'rev_user_text' => 'MediaWiki default', |
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51 | ] |
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52 | ); |
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53 | |||
54 | if ( $dbr->numRows( $res ) == 0 ) { |
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55 | # No more messages left |
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56 | $this->output( "done.\n" ); |
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57 | |||
58 | return; |
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59 | } |
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60 | |||
61 | # Deletions will be made by $user temporarly added to the bot group |
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62 | # in order to hide it in RecentChanges. |
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63 | $user = User::newFromName( 'MediaWiki default' ); |
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64 | if ( !$user ) { |
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65 | $this->error( "Invalid username", true ); |
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66 | } |
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67 | $user->addGroup( 'bot' ); |
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68 | $wgUser = $user; |
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69 | |||
70 | # Handle deletion |
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71 | $this->output( "\n...deleting old default messages (this may take a long time!)...", 'msg' ); |
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72 | $dbw = $this->getDB( DB_MASTER ); |
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73 | |||
74 | foreach ( $res as $row ) { |
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75 | wfWaitForSlaves(); |
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76 | $dbw->ping(); |
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77 | $title = Title::makeTitle( $row->page_namespace, $row->page_title ); |
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78 | $page = WikiPage::factory( $title ); |
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79 | $error = ''; // Passed by ref |
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80 | // FIXME: Deletion failures should be reported, not silently ignored. |
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81 | $page->doDeleteArticle( 'No longer required', false, 0, true, $error, $user ); |
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82 | } |
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83 | |||
84 | $this->output( "done!\n", 'msg' ); |
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85 | } |
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86 | } |
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87 | |||
88 | $maintClass = "DeleteDefaultMessages"; |
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89 | require_once RUN_MAINTENANCE_IF_MAIN; |
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90 |
This check looks for type mismatches where the missing type is
false
. This is usually indicative of an error condtion.Consider the follow example
This function either returns a new
DateTime
object or false, if there was an error. This is a typical pattern in PHP programming to show that an error has occurred without raising an exception. The calling code should check for this returnedfalse
before passing on the value to another function or method that may not be able to handle afalse
.