resetUserTokens.php

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<?php
require_once( __DIR__ . '/Maintenance.php' );

class ResetUserTokens extends Maintenance {
        public function __construct() {
                parent::__construct();
                $this->mDescription = "Reset the user_token of all users on the wiki. Note that this may log some of them out.";
                $this->addOption( 'nowarn', "Hides the 5 seconds warning", false, false );
        }

        public function execute() {

                if ( !$this->getOption( 'nowarn' ) ) {
                        $this->output( "The script is about to reset the user_token for ALL USERS in the database.\n" );
                        $this->output( "This may log some of them out and is not necessary unless you believe your\n" );
                        $this->output( "user table has been compromised.\n" );
                        $this->output( "\n" );
                        $this->output( "Abort with control-c in the next five seconds (skip this countdown with --nowarn) ... " );
                        wfCountDown( 5 );
                }

                // We list user by user_id from one of the slave database
                $dbr = wfGetDB( DB_SLAVE );
                $result = $dbr->select( 'user',
                        array( 'user_id' ),
                        array(),
                        __METHOD__
                        );

                foreach ( $result as $id ) {
                        $user = User::newFromId( $id->user_id );

                        $username = $user->getName();

                        $this->output( "Resetting user_token for $username: " );

                        // Change value
                        $user->setToken();
                        $user->saveSettings();

                        $this->output( " OK\n" );

                }

        }
}

$maintClass = "ResetUserTokens";
require_once( RUN_MAINTENANCE_IF_MAIN );