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boolean.php

                  <?php
/**
 * @package     Joomla.Platform
 * @subpackage  Form
 *
 * @copyright   Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

jimport('joomla.form.formrule');

/**
 * Form Rule class for the Joomla Framework.
 *
 * @package     Joomla.Platform
 * @subpackage  Form
 * @since       11.1
 */
class JFormRuleBoolean extends JFormRule
{
    /**
     * The regular expression to use in testing a form field value.
     *
     * @var     string
     * @since   11.1
     */
    protected $regex = '^(?:[01]|true|false)$';

    /**
     * The regular expression modifiers to use when testing a form field value.
     *
     * @var     string
     * @since   11.1
     */
    protected $modifiers = 'i';
}

                