(PHP 5, PHP 7, PHP 8)
DOMElement::hasAttributeNS — Checks to see if attribute exists
$namespace
, string $localName
) : bool
Indicates whether attribute in namespace namespace
named localName exists as a member of the element.
namespaceThe namespace URI.
localNameThe local name.
成功时返回 true， 或者在失败时返回 false。