PhpBench\Serializer\XmlEncoder::createParameter PHP Метод

    private function createParameter($parentEl, $name, $value)
    {
        $parameterEl = $parentEl->appendElement('parameter');
        $parameterEl->setAttribute('name', $name);
        if (is_array($value)) {
            $parameterEl->setAttribute('type', 'collection');
            foreach ($value as $key => $element) {
                $this->createParameter($parameterEl, $key, $element);
            }
            return $parameterEl;
        }
        if (is_scalar($value)) {
            $parameterEl->setAttribute('value', $value);
            return $parameterEl;
        }
        throw new \InvalidArgumentException(sprintf('Parameters must be either scalars or arrays, got: %s', is_object($value) ? get_class($value) : gettype($value)));
    }