Again, XHTML is really powerful when served as application/xhtml+xml. We can even parse it with the PHP SimpleXML library. For example, given the following markup:
<body> <p>Test</p> </body>
we can write the following PHP code:
$xhtml_file = 'test.xhtml'; $xhtml_doc = simplexml_load_file($xhtml_file); $p = $xhtml_doc->body->p; echo $p; // 'Test'
Very simple, isn't it? The fact is that XHTML is treated exactly as XML when served with its proper content type.