PHP Decode

<?php
/*
* 2007-2015 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to [email protected] so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <[email protected]>
*  @copyright  2007-2015 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

function add_unknown_gender()
{
    $res = true;

    // creates the new gender
    $id_type = 2;
    $res &= Db::getInstance()->execute('
		INSERT INTO `'._DB_PREFIX_.'gender` (`type`)
		VALUES ('.(int)$id_type.')');

    // retrieves its id
    $id_gender = Db::getInstance()->Insert_ID();

    // inserts lang values
    $languages = Db::getInstance()->executeS('SELECT * FROM `'._DB_PREFIX_.'lang`');
    $lang_names = array(
        'en' => 'Unknown',
        'de' => 'Unbekannte',
        'es' => 'Desconocido',
        'fr' => 'Inconnu',
        'it' => 'Sconosciuto',
    );

    foreach ($languages as $lang) {
        $name = (isset($lang_names[$lang['iso_code']]) ? $lang_names[$lang['iso_code']] : 'Unknown');
        $res &= Db::getInstance()->execute('
			INSERT INTO `'._DB_PREFIX_.'gender_lang` (`id_gender`, `id_lang`, `name`) VALUES
				('.(int)$id_gender.', '.(int)$lang['id_lang'].', \''.pSQL($name).'\')');
    }

    // for all clients where id gender is 0, sets the new id gender
    $res &= Db::getInstance()->execute('
		UPDATE `'._DB_PREFIX_.'customers`
		SET `id_gender` = '.(int)$id_gender.'
		WHERE `id_gender` = 0');
}
 ?>