Question

I’m attempting to replace all <foo> elements in a DOMDocument with <bar> elements. The best way to do this seems to be to grab all the <foo> elements with getElementsByTagName and then create new elements to replace these with.

The problem is, I can’t see to grab the innerHTML from the element which is being replaced. nodeValue and textContent both return the inner text, but the inner tags get stripped away. How can a I get something similar to “innerHTML” from a DOMElement?

Sample code:

function convertTags($doc, $type) {

$bad_nodes = $doc->getElementsByTagName($type); 

foreach($bad_nodes as $bad_node) {
    $good_node = $doc->createElement("bar", $bad_node->nodeValue);
    $bad_node->parentNode->replaceChild($good_node, $bad_node); 
}

return $doc;
} 

Answer 1

I think you could do better by treating them like actual nodes:

$good_node = $doc->createElement('bar');
foreach( $bad_node->childNodes as $kid )
{
    $good_node->appendChild( $kid );
}