XML Flash ActionScript

package{
  import flash.display.Sprite;
  
  public class Main extends Sprite{
    public function Main(){
        XML.ignoreComments = false;
        XML.ignoreProcessingInstructions = false;
        var example:XML = 
                                  
                                  
                                     Welcome!
                                     
                                                                                   // execute some php code
                                        ?>
                                     
                                  
                               ;
        trace(example.body.nodeKind()); // Displays: element
        trace(example.body.@id.nodeKind()); // Displays: attribute
        trace(example.body.text().nodeKind()); // Displays: text
        trace(example.body.comments()[0].nodeKind()); // Displays: comment
        trace(example.body.processingInstructions().nodeKind()); // Displays:
    }
  }
}