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   1  <?php
   2  /**
   3   * Clear the cache of interwiki prefixes for all local wikis.
   4   *
   5   * This program is free software; you can redistribute it and/or modify
   6   * it under the terms of the GNU General Public License as published by
   7   * the Free Software Foundation; either version 2 of the License, or
   8   * (at your option) any later version.
   9   *
  10   * This program is distributed in the hope that it will be useful,
  11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13   * GNU General Public License for more details.
  14   *
  15   * You should have received a copy of the GNU General Public License along
  16   * with this program; if not, write to the Free Software Foundation, Inc.,
  17   * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18   * http://www.gnu.org/copyleft/gpl.html
  19   *
  20   * @file
  21   * @ingroup Maintenance
  22   */
  23  
  24  require_once  __DIR__ . '/Maintenance.php';
  25  
  26  /**
  27   * Maintenance script to clear the cache of interwiki prefixes for all local wikis.
  28   *
  29   * @ingroup Maintenance
  30   */
  31  class ClearInterwikiCache extends Maintenance {
  32  
  33  	public function __construct() {
  34          parent::__construct();
  35          $this->mDescription = "Clear all interwiki links for all languages from the cache";
  36      }
  37  
  38  	public function execute() {
  39          global $wgLocalDatabases, $wgMemc;
  40          $dbr = wfGetDB( DB_SLAVE );
  41          $res = $dbr->select( 'interwiki', array( 'iw_prefix' ), false );
  42          $prefixes = array();
  43          foreach ( $res as $row ) {
  44              $prefixes[] = $row->iw_prefix;
  45          }
  46  
  47          foreach ( $wgLocalDatabases as $db ) {
  48              $this->output( "$db..." );
  49              foreach ( $prefixes as $prefix ) {
  50                  $wgMemc->delete( "$db:interwiki:$prefix" );
  51              }
  52              $this->output( "done\n" );
  53          }
  54      }
  55  }
  56  
  57  $maintClass = "ClearInterwikiCache";
  58  require_once RUN_MAINTENANCE_IF_MAIN;