private function getNamespaceForNode($nodeName, \stdClass $properties, \DOMNode $parent) { $prefix = substr($nodeName, 0, strpos($nodeName, ':')); $xmlns = $this->getNamespacePropertyName($prefix); return isset($properties->{$xmlns}) ? $properties->{$xmlns} : $parent->lookupNamespaceUri(empty($prefix) ? NULL : $prefix); }