WordPress at a glance
function is not described

saveDomDocument() WP 2.8.0

Saves the XML document into a file

No Hooks.

Return

Nothing (null).

Usage

saveDomDocument( $doc, $filename );
$doc(DOMDocument) (required)
$filename(string) (required)

Code of saveDomDocument: wp-admin/includes/misc.php VER 5.0.3

<?php
function saveDomDocument($doc, $filename) {
	$config = $doc->saveXML();
	$config = preg_replace("/([^\r])\n/", "$1\r\n", $config);
	$fp = fopen($filename, 'w');
	fwrite($fp, $config);
	fclose($fp);
}