<?php
$xml = <<< XML
<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
<firstname>My name is WHAT</firstname>
<lastname>My name is WHO</lastname>
<body><b>My name is CHIKA CHIKA Slim-Shady</b></body>
</note>
XML;
$note = simplexml_load_string($xml);
echo $note->body;