Nu-Coder Manual

PhpExpress Manual

PHP Joomla
Development

Dom\HTMLDocument::saveXml	Dom\HTMLElement

Dom\HTMLDocument	Last updated: Mon, 26 Oct 2026

Dom\HTMLDocument::saveXmlFile

(PHP 8 >= 8.4.0)

Dom\HTMLDocument::saveXmlFile — Serializes the document as an XML file

Description

public function Dom\HTMLDocument::saveXmlFile(string $filename, int $options = 0): int|false

Serializes the document as an XML file.

Parameters

filename: The path to the file to save to.
options: Additional Options. The LIBXML_NOEMPTYTAG and LIBXML_NOXMLDECL options are supported. Prior to PHP 8.3.0, only the LIBXML_NOEMPTYTAG option is supported.

Return Values

The number of bytes written on success, or false on failure.

Errors/Exceptions

Throws a ValueError if filename is an empty string or contains any null bytes.

See Also

Dom\HTMLDocument::saveXml() - Serializes the document as an XML string
Dom\HTMLDocument::saveHtmlFile() - Serializes the document as an HTML file

Dom\HTMLDocument::saveXml	Dom\HTMLElement

Dom\HTMLDocument	Last updated: Mon, 26 Oct 2026