Codice PHP:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html 
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="it">

<head>
    <title>Test</title>
</head>

<body>
    

123</p>
    <script type="text/javascript">
    /*<![CDATA[*/
        document.write('[url="1.htm"]ciao[/url]');
    /*]]>*/
    </script>
    

456</p>
</body>

</html>