Services_JSON::isError( $data, $code = null )

923    function isError($data, $code = null)924    {925        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );926 927        if (class_exists('pear')) {928            return PEAR::isError($data, $code);929        } elseif (is_object($data) && ($data instanceof services_json_error ||930                                 is_subclass_of($data, 'services_json_error'))) {931            return true;932        }933 934        return false;935    }