class SimpleXMLElement 
{ 
string xpath(path) 
}

?xml version="1.0" encoding="ISO-8859-1"?> 
note> 
to>Tove/to> 
from>Jani/from> 
heading>Reminder/heading> 
body>Don't forget me this weekend!/body> 
/note>

?php 
$xml = simplexml_load_file("test.xml"); 
$result = $xml->xpath("from"); 
print_r($result); 
?>

Array 
( 
[0] => SimpleXMLElement Object 
( 
[0] => Jani 
) 
)