source: sourcecode/system/helpers/xml_helper.php @ 1

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package             CodeIgniter
 * @author              ExpressionEngine Dev Team
 * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license             http://codeigniter.com/user_guide/license.html
 * @link                http://codeigniter.com
 * @since               Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * CodeIgniter XML Helpers
 *
 * @package             CodeIgniter
 * @subpackage  Helpers
 * @category    Helpers
 * @author              ExpressionEngine Dev Team
 * @link                http://codeigniter.com/user_guide/helpers/xml_helper.html
 */

// ------------------------------------------------------------------------

/**
 * Convert Reserved XML characters to Entities
 *
 * @access      public
 * @param       string
 * @return      string
 */
if ( ! function_exists('xml_convert'))
{
        function xml_convert($str, $protect_all = FALSE)
        {
                $temp = '__TEMP_AMPERSANDS__';

                // Replace entities to temporary markers so that
                // ampersands won't get messed up
                $str = preg_replace("/&#(\d+);/", "$temp\\1;", $str);

                if ($protect_all === TRUE)
                {
                        $str = preg_replace("/&(\w+);/",  "$temp\\1;", $str);
                }

                $str = str_replace(array("&","<",">","\"", "'", "-"),
                                                        array("&amp;", "&lt;", "&gt;", "&quot;", "&apos;", "&#45;"),
                                                        $str);

                // Decode the temp markers back to entities
                $str = preg_replace("/$temp(\d+);/","&#\\1;",$str);

                if ($protect_all === TRUE)
                {
                        $str = preg_replace("/$temp(\w+);/","&\\1;", $str);
                }

                return $str;
        }
}

// ------------------------------------------------------------------------

/* End of file xml_helper.php */
/* Location: ./system/helpers/xml_helper.php */