(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$doctype
= null
): DOMDocument|false$qualifiedName
, string$publicId
= "", string$systemId
= ""): DOMDocumentType|false