confirmlock.php

<?php
/**
 * This script is called through AJAX. It confirms that a user is still 
 * trying to edit a page that they have locked (they haven't closed
 * their browser window or something). 
 *
 * @copyright &copy; 2006 The Open University
 * @author s.marshall@open.ac.uk
 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
 * @package mod-wiki
 * @category mod
 *//** */

require_once("../../config.php");

$PAGE->set_url($CFG->wwwroot.'/mod/wiki/confirmlock.php');

header('Content-Type: text/plain');    

$lockid = optional_param('lockid', 0, PARAM_INT);

if($lockid == 0) {
    print 'noid';
    exit;
}

if($lock=$DB->get_record('wiki_locks', array('id'=>$lockid))) {
    $lock->lockedseen=time();
    $DB->update_record('wiki_locks',$lock);
    print 'ok';   
} else {
    print 'cancel'; // Tells user their lock has been cancelled.
}

?>