Just trying to add some clarification: this function will return boolean "false" when there is not a $name attribute :)
Cheers, Alex(PHP 5, PHP 7, PHP 8)
DOMElement::getAttributeNode — Returns attribute node
Returns the attribute node with name qualifiedName for the
current element.
qualifiedNameThe name of the attribute.
The attribute node. Note that for XML namespace declarations
(xmlns and xmlns:* attributes) an
instance of DOMNameSpaceNode is returned instead of a
DOMAttr.