PHP: Removing an attribute from a DOMNode object
dom, php
Solution
If you've got a `DOMNode` that has some attributes, it must be a `DOMElement`. In which case you should be able to call `removeAttribute/removeAttributeNS/removeAttributeNode` on it.
It is somewhat curious that PHP's `DOMNamedNodeMap` documents `getNamedItem[NS]` but does not acknowledge the existence `setNamedItem[NS]` and `removeNamedItem[NS]`, which would have been another way of doing it.
`DOMNode::removeChild` can't work because a `DOMAttr` is not a child of another `DOMNode; ‘attributes’` is a separate space to `childNodes`. You also can't create a new `NamedNodeMap` on its own to write to `DOMNode::attributes`, as that's a read-only property.
Problem
I've got a `DOMNode` object that has some attributes. `$Node->attributes` is a `DOMNamedNodeMap`, which has no methods for removing one of the entries in the map. The `DOMNode` class also has no methods for removing attributes from an element. I've looked through a number of the other related classes and none of them seem to provide a mechanism for removing an attribute node from its parent. `DOMNode::removeChild` doesn't work; it throws a "Not found error" if I pass a `DOMAttr` object to it. Aside from constructing a new `DOMNamedNodeMap` and adding all the attributes to it except the one I don't want... any ideas? Thanks.