rebuildmessages.php

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<?php
use MediaWiki\MediaWikiServices;
 
require_once __DIR__ . '/Maintenance.php';
 
class RebuildMessages extends Maintenance {
    public function __construct() {
        parent::__construct();
        $this->addDescription( 'Purge the MessageCache for all interface languages.' );
    }
 
    public function execute() {
        $this->output( "Purging message cache for all languages on this wiki..." );
        $messageCache = MediaWikiServices::getInstance()->getMessageCache();
        $messageCache->clear();
        $this->output( "Done\n" );
    }
}
 
$maintClass = RebuildMessages::class;
require_once RUN_MAINTENANCE_IF_MAIN;