https://www.php.net/manual/en/xmlwriter.endcomment.php
PHP: XMLWriter::endComment - Manual
phpxmlwritermanual
https://learn.microsoft.com/ru-ru/dotnet/api/system.xml.serialization.ixmlserializable.writexml?view=netframework-4.8.1&viewFallbackFrom=net-8.0
IXmlSerializable.WriteXml(XmlWriter) Method (System.Xml.Serialization) | Microsoft Learn
Converts an object into its XML representation.
microsoft learnxmlwritermethodsystemserialization
https://repat.de/tag/php-xml-erstellen-xmlwriter/
php xml erstellen xmlwriter Archive - repats blog
Thoughts of a digital native
phpxmlerstellenarchiveblog