(PHP 5, PHP 7)
DOMElement::removeAttributeNode — Removes attribute
Removes attribute oldnode from the element.
oldnodeThe attribute node.
成功时返回 TRUE, 或者在失败时返回 FALSE。
DOM_NO_MODIFICATION_ALLOWED_ERRRaised if the node is readonly.
DOM_NOT_FOUND_ERROR
Raised if oldnode is not an attribute of the element.