/**
* Given a JSON formatted string, this function will convert it to an
* equivalent XML version (either standalone or as a fragment). The JSON
* will be added under a root node of `<data>`.
*
* @throws JSONException
* @param string $json
* The JSON formatted class
* @param boolean $standalone
* If passed true (which is the default), this parameter will cause
* the function to return the XML with an XML declaration, otherwise
* the XML will be returned as a fragment.
* @return string
* Returns a XML string
*/
public static function convertToXML($json, $standalone = true)
{
self::$dom = new DomDocument('1.0', 'utf-8');
self::$dom->formatOutput = true;
// remove callback functions from JSONP
if (preg_match('/(\\{|\\[).*(\\}|\\])/s', $json, $matches)) {
$json = $matches[0];
} else {
throw new JSONException(__("JSON not formatted correctly"));
}
$data = json_decode($json);
if (function_exists('json_last_error')) {
if (json_last_error() !== JSON_ERROR_NONE) {
throw new JSONException(__("JSON not formatted correctly"), json_last_error());
}
} elseif (!$data) {
throw new JSONException(__("JSON not formatted correctly"));
}
$data_element = self::_process($data, self::$dom->createElement('data'));
self::$dom->appendChild($data_element);
if ($standalone) {
return self::$dom->saveXML();
} else {
return self::$dom->saveXML(self::$dom->documentElement);
}
}
