* Name:     replace
 * Purpose:  simple search/replace
 *
 * @link   http://smarty.php.net/manual/en/language.modifier.replace.php replace (Smarty online manual)
 * @author Monte Ohrt 
 * @author Uwe Tews
 *
 * @param string $string  input string
 * @param string $search  text to search for
 * @param string $replace replacement text
 *
 * @return string
 */
function smarty_modifier_replace($string, $search, $replace)
{
    if (Smarty::$_MBSTRING) {
        require_once(SMARTY_PLUGINS_DIR . 'shared.mb_str_replace.php');
        return smarty_mb_str_replace($search, $replace, $string);
    }
    return str_replace($search, $replace, $string);
}