/**
* @param SimpleXMLElement $xml
* @param $xpathQuery
* @param $value
* @param bool $returnAsString
* @return object|SimpleXMLElement|string
* @throws Exception
*/
public function setDataByXpath(SimpleXMLElement $xml, $xpathQuery, $value, $returnAsString = false)
{
if ($value) {
if (!$xml) {
$xml = simplexml_load_string(Dfi_Xml::from_array(array()));
}
$elements = $xml->xpath($xpathQuery);
if ($elements && count($elements) > 0) {
if (count($elements) > 1) {
throw new Exception('multiple elements found dont know which update');
} else {
$element = $elements[0];
/* @var $element SimpleXMLElement */
$val = (string) $element;
if ($value != $val) {
dom_import_simplexml($element)->nodeValue = $value;
}
}
} else {
$parts = explode('/', $xpathQuery);
$last = array_pop($parts);
$xml->{$last} = $value;
}
if ($returnAsString) {
return self::checkIsValidXmlStirng($xml->asXML());
}
}
return $xml;
}
