https://www.php.net/manual/it/xmlreader.getattributens.php
PHP: XMLReader::getAttributeNs - Manual
Get the value of an attribute by localname and URI
phpxmlreadergetattributensmanual
https://www.php.net/manual/zh/domelement.getattributens.php
PHP: DOMElement::getAttributeNS - Manual
Returns value of attribute
phpdomelementgetattributensmanual