(PHP 5, PHP 7, PHP 8)
The DOMImplementation class provides a number of methods for performing operations that are independent of any particular instance of the document object model.
$namespace
= null
, string $qualifiedName
= "", ?DOMDocumentType $doctype
= null
): DOMDocument$qualifiedName
, string $publicId
= "", string $systemId
= ""): DOMDocumentType|false