Symfony\Component\DependencyInjection\Dumper\XmlDumper::convertParameters PHP Méthode

    private function convertParameters($parameters, $type, \DOMElement $parent, $keyAttribute = 'key')
    {
        $withKeys = array_keys($parameters) !== range(0, count($parameters) - 1);
        foreach ($parameters as $key => $value) {
            $element = $this->document->createElement($type);
            if ($withKeys) {
                $element->setAttribute($keyAttribute, $key);
            }

            if (is_array($value)) {
                $element->setAttribute('type', 'collection');
                $this->convertParameters($value, $type, $element, 'key');
            } else if (is_object($value) && $value instanceof Reference) {
                $element->setAttribute('type', 'service');
                $element->setAttribute('id', (string) $value);
                $behaviour = $value->getInvalidBehavior();
                if ($behaviour == ContainerInterface::NULL_ON_INVALID_REFERENCE) {
                    $element->setAttribute('on-invalid', 'null');
                } else if ($behaviour == ContainerInterface::IGNORE_ON_INVALID_REFERENCE) {
                    $element->setAttribute('on-invalid', 'ignore');
                }
            } else if (is_object($value) && $value instanceof Definition) {
                $element->setAttribute('type', 'service');
                $this->addService($value, null, $element);
            } else {
                if (in_array($value, array('null', 'true', 'false'), true)) {
                    $element->setAttribute('type', 'string');
                }
                $text = $this->document->createTextNode(self::phpToXml($value));
                $element->appendChild($text);
            }
            $parent->appendChild($element);
        }
    }