/** * The xmlSerialize metod is called during xml writing. * * Use the $writer argument to write its own xml serialization. * * An important note: do _not_ create a parent element. Any element * implementing XmlSerializble should only ever write what's considered * its 'inner xml'. * * The parent of the current element is responsible for writing a * containing element. * * This allows serializers to be re-used for different element names. * * If you are opening new elements, you must also close them again. * * @param Writer $writer * @return void */ function xmlSerialize(Writer $writer) { $reader = new Reader(); // Wrapping the xml in a container, so root-less values can still be // parsed. $xml = <<<XML <?xml version="1.0"?> <xml-fragment xmlns="http://sabre.io/ns">{$this->getXml()}</xml-fragment> XML; $reader->xml($xml); $elementNamespace = null; while ($reader->read()) { if ($reader->depth < 1) { // Skipping the root node. continue; } switch ($reader->nodeType) { case Reader::ELEMENT: $writer->startElement($reader->getClark()); $empty = $reader->isEmptyElement; while ($reader->moveToNextAttribute()) { switch ($reader->namespaceURI) { case '': $writer->writeAttribute($reader->localName, $reader->value); break; case 'http://www.w3.org/2000/xmlns/': // Skip namespace declarations break; default: $writer->writeAttribute($reader->getClark(), $reader->value); break; } } if ($empty) { $writer->endElement(); } break; case Reader::CDATA: case Reader::TEXT: $writer->text($reader->value); break; case Reader::END_ELEMENT: $writer->endElement(); break; } } }