PHP XML remove element and all children by name

Question

I have an XML file structured as:

Answer 1

This should do it:

foreach ($featureddel as $node) {
    $node->parentNode->removeChild($node);
}

You're probably just forgetting that with both xPath and getElementsByTagName you get a list (DOMNodeList) of items. That object itself only has a property $length, which you can use to determine how many objects are on the list, and function item($index), which returns specified DOMNode from the list. DOMNodeList is also iteratable through foreach. So besides foreach like I wrote above you can also do:

for ($i = 0; $i < $featureddel->length; $i++) {
    $temp = $featureddel->item($i); //avoid calling a function twice
    $temp->parentNode->removeChild($temp);
}

But foreach is usually more preferred.