PHP XML Build

<?php 
$doc = new DOMDocument('1.0', 'UTF-8'); 

$root = $doc->createElement('songs'); 
$doc->appendChild($root); 

for($i=0;$i<10;$i++){ 

    $root_child = $doc->createElement('song'); 
    $root->appendChild($root_child); 
    
    $root_attr1 = $doc->createAttribute('url'); 
    $root_child->appendChild($root_attr1); 
    
    $root_text = $doc->createTextNode('This is the root element!'); 
    $root_attr1->appendChild($root_text); 
    
    $root_attr2= $doc->createAttribute('artist'); 
    $root_child->appendChild($root_attr2); 
    
    $root_text = $doc->createTextNode('This is the root element!'); 
    $root_attr2->appendChild($root_text); 
    
    $root_attr3 = $doc->createAttribute('track'); 
    $root_child->appendChild($root_attr3); 
    
    $root_text = $doc->createTextNode('This is the root element!'); 
    $root_attr3->appendChild($root_text); 

} 

print $doc->saveXML(); 
?>