class.ilDOM2Util.php

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<?php
 
class ilDOM2Util
{
    // change node name
    public static function changeName(
        DOMNode $node,
        string $name,
        bool $keep_attributes = true
    ): DOMNode {
        $newnode = $node->ownerDocument->createElement($name);
 
        foreach ($node->childNodes as $child) {
            $child2 = $child->cloneNode(true);
            $newnode->appendChild($child2);
        }
        if ($keep_attributes) {
            foreach ($node->attributes as $attrName => $attrNode) {
                $newnode->setAttribute($attrName, $attrNode);
            }
        }
        $node->parentNode->replaceChild($newnode, $node);
 
        return $newnode;
    }
 
    // Add parent
    public static function addParent(
        DOMNode $node,
        string $name
    ): DOMNode {
        $newnode = $node->ownerDocument->createElement($name);
        $par = $node->parentNode;
        if ($next_sib = $node->nextSibling) {
            $newnode = $par->insertBefore($newnode, $next_sib);
        } else {
            $newnode = $par->appendChild($newnode);
        }
 
        $node = $par->removeChild($node);
        $newnode->appendChild($node);
        return $newnode;
    }
 
    // Replace a node by its child
    public static function replaceByChilds(DOMNode $node): void
    {
        foreach ($node->childNodes as $child) {
            $child2 = $child->cloneNode(true);
            $node->parentNode->insertBefore($child2, $node);
        }
        $node->parentNode->removeChild($node);
    }
}