How is possible add child to the specific node

Question

This is my starting xml :

 
    
      
        
     &         


        

Answer 1

Some good examples on how to append XML nodes can be found in the PHP manual. Like this one on how to use the SimpleXMLElement class to add a child node.

Answer 2

With DOMDocument it's as easy as this:

$child = new DOMElement('children');
$parent->appendChild($child);

Whereas $parent is the DOMElement parent which (after you have updated your question) to aquire is part of your problem:

// append <children> to the first <child> element
$parent = $dom->getElementsByTagName('child')->item(0);
$child = new DOMElement('children');
$parent->appendChild($child);

Answer 3

Since you have tagged php i am assuming you are looking for a solution in PHP did you try the following:

$myxml = new SimpleXMLElement($xmlstr);
$myxml->child[0]->addChild('children');

See: http://www.php.net/manual/en/simplexml.examples-basic.php for a good set of examples on XML manipulation in PHP