PHP asXML()函数讲解

?php 
$note=XML
note> 
to>Tove/to> 
from>Jani/from> 
heading>Reminder/heading> 
body>Don't forget me this weekend!/body> 
/note> 
XML;
$xml=new SimpleXMLElement($note); 
echo $xml->asXML(); 
?>

asXML( _filename_ );