How to save changed SimpleXML object back to file?
Not sure I understand the issue. The asXML() method accepts an optional filename as param that will save the current structure as XML to a file. So once you have updated your XML with the hints, just save it back to file.
// Load XML with SimpleXml from string$root = simplexml_load_string('<root><a>foo</a></root>');// Modify a node$root->a = 'bar';// Saving the whole modified XML to a new filename$root->asXml('updated.xml');// Save only the modified node$root->a->asXml('only-a.xml');
If you want to save the same, you can use dom_import_simplexml to convert to a DomElement and save:
$dom = new DOMDocument('1.0');$dom->preserveWhiteSpace = false;$dom->formatOutput = true;$dom->loadXML($simpleXml->asXML());echo $dom->saveXML();