PHP - SimpleXML - AddChild with another SimpleXMLElement

Question

I\'m trying to build a rather complex XML document.

I have a bunch of sections of the XML document that repeats. I thought I\'d use multiple string templates as base

Answer 1

The xml_adopt() example doesn't preserve namespace nodes.
My edit was rejected because it changed to much? was spam?.

Here is a version of xml_adopt() that preserves namespaces.

function xml_adopt($root, $new, $namespace = null) {
    // first add the new node
    // NOTE: addChild does NOT escape "&" ampersands in (string)$new !!!
    //  replace them or use htmlspecialchars(). see addchild docs comments.
    $node = $root->addChild($new->getName(), (string) $new, $namespace);
    // add any attributes for the new node
    foreach($new->attributes() as $attr => $value) {
        $node->addAttribute($attr, $value);
    }
    // get all namespaces, include a blank one
    $namespaces = array_merge(array(null), $new->getNameSpaces(true));
    // add any child nodes, including optional namespace
    foreach($namespaces as $space) {
      foreach ($new->children($space) as $child) {
        xml_adopt($node, $child, $space);
      }
    }
}

(edit: example added)

$xml = new SimpleXMLElement(
  '
  
  ');

$item = new SimpleXMLElement(
  '
    
    Some description
    http://example.com/img/image.jpg
    A1234
    
    
  ');

$channel = $xml->channel;
xml_adopt($channel, $item);

// output:
// Note that the namespace is (correctly) only preserved on the root element
'

  
    
      
      Some description
      http://example.com/img/image.jpg
      A1234
      
        
    
  
'