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