final public static function headers_list()
    {
        $results = array();
        foreach (self::$list as $headers) {
            $results = array_merge($results, $headers);
        }

        return $results;
    }
final public static function headers_list()
    {
        $results = array();
        foreach (self::$list as $headers) {
            $results = array_merge($results, $headers);
        }

        return $results;
    }
final public static function headers_list ( ) { $ results = array ( ) ; foreach ( self :: $ list as $ headers ) { $ results = array_merge ( $ results , $ headers ) ; } return $ results ; }
Returns a list of response headers ready to send

@link http://www.php.net/manual/en/function.headers_list.php

@return array Returns a numerically indexed array of headers.
Returns a list of response headers ready to send