function dhtmlspecialchars($string, $flags = null) {  

    if(is_array($string)) {  

        foreach($string as $key => $val) {  

            $string[$key] = dhtmlspecialchars($val, $flags);  

        }  

    } else {  

        if($flags === null) {  

            $string = str_replace(array('&', '"', '<', '>'), array('&', '"', '<', '>'), $string);  

            if(strpos($string, '&#') !== false) {  

                $string = preg_replace('/&((#(\d{3,5}|x[a-fA-F0-9]{4}));)/', '&\\1', $string);  

            }  

        } else {  

            if(PHP_VERSION < '5.4.0') {  

                $string = htmlspecialchars($string, $flags);  

            } else {  

                if(strtolower(CHARSET) == 'utf-8') {  

                    $charset = 'UTF-8';  

                } else {  

                    $charset = 'ISO-8859-1';  

                }  

                $string = htmlspecialchars($string, $flags, $charset);  

            }  

        }  

    }  

    return $string;  

}