protected function validate_response($response) {

        $response = $this->decode_response($response);

        if (empty($response)) {
            throw new checker_exception('err_response_empty');
        }

        if (empty($response['status']) or $response['status'] !== 'OK') {
            throw new checker_exception('err_response_status', $response['status']);
        }

        if (empty($response['apiver']) or $response['apiver'] !== '1.3') {
            throw new checker_exception('err_response_format_version', $response['apiver']);
        }

        if (empty($response['forbranch']) or $response['forbranch'] !== moodle_major_version(true)) {
            throw new checker_exception('err_response_target_version', $response['forbranch']);
        }
    }
protected function validate_response($response) {

        $response = $this->decode_response($response);

        if (empty($response)) {
            throw new checker_exception('err_response_empty');
        }

        if (empty($response['status']) or $response['status'] !== 'OK') {
            throw new checker_exception('err_response_status', $response['status']);
        }

        if (empty($response['apiver']) or $response['apiver'] !== '1.3') {
            throw new checker_exception('err_response_format_version', $response['apiver']);
        }

        if (empty($response['forbranch']) or $response['forbranch'] !== moodle_major_version(true)) {
            throw new checker_exception('err_response_target_version', $response['forbranch']);
        }
    }
protected function validate_response ( $ response ) { $ response = $ this -> decode_response ( $ response ) ; if ( empty ( $ response ) ) { throw new checker_exception ( 'err_response_empty' ) ; } if ( empty ( $ response [ 'status' ] ) or $ response [ 'status' ] !== 'OK' ) { throw new checker_exception ( 'err_response_status' , $ response [ 'status' ] ) ; } if ( empty ( $ response [ 'apiver' ] ) or $ response [ 'apiver' ] !== '1.3' ) { throw new checker_exception ( 'err_response_format_version' , $ response [ 'apiver' ] ) ; } if ( empty ( $ response [ 'forbranch' ] ) or $ response [ 'forbranch' ] !== moodle_major_version ( true ) ) { throw new checker_exception ( 'err_response_target_version' , $ response [ 'forbranch' ] ) ; } }
Makes sure the response is valid, has correct API format etc.

@param string $response raw response as returned by the {@link self::get_response()}
@throws checker_exception
Makes sure the response is valid has correct API format etc .