(PHP 5, PHP 7)
DOMElement::hasAttributeNS — Checks to see if attribute exists
public DOMElement::hasAttributeNS ( string $namespaceURI , string $localName ) : bool
Indicates whether attribute in namespace namespaceURI
named localName
exists as a member of the element.
namespaceURI
The namespace URI.
localName
The local name.
Returns true
on success or false
on failure.
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https://www.php.net/manual/en/domelement.hasattributens.php