(PHP 5, PHP 7, PHP 8)
DOMDocument::__construct — Creates a new DOMDocument object
$version = "1.0", string $encoding = "")Creates a new DOMDocument object.
versionThe version number of the document as part of the XML declaration.
encodingThe encoding of the document as part of the XML declaration.
示例 #1 Creating a new DOMDocument
<?php
$dom = new DOMDocument('1.0', 'iso-8859-1');
echo $dom->saveXML(); /* <?xml version="1.0" encoding="iso-8859-1"?> */
?>