(PHP 8 >= 8.3.0)
DOMElement::replaceChildren — Replace children in element
   Replaces the children in the element with new nodes.
  
nodesThe nodes replacing the children. Strings are automatically converted to text nodes.
No value is returned.
DOM_HIERARCHY_REQUEST_ERR
    Raised if this node is of a type that does not allow children of the
    type of one of the passed nodes, or if the node to
    put in is one of this node's ancestors or this node itself.
  
DOM_WRONG_DOCUMENT_ERR
    Raised if one of the passed nodes was created from a different
    document than the one that created this node.
  
| Version | Description | 
|---|---|
| 8.3.0 | Calling this method on a node without an owner document now works.
       Previously this threw a
 DOMException with code DOM_HIERARCHY_REQUEST_ERR. | 
Example #1 DOMElement::replaceChildren() example
Replaces the children with new nodes.
<?php
$doc = new DOMDocument;
$doc->loadXML("<container><hello/></container>");
$container = $doc->documentElement;
$container->replaceWith("beautiful", $doc->createElement("world"));
echo $doc->saveXML();
?>The above example will output:
<?xml version="1.0"?> beautiful <world/>
