Check out April Fools page for PHP (look in top right corner for there usual logo)
http://www.php.net/
or you can just add this lovely content to your site any 'ol day by:
Here are some other things PHP has built into there little program
Simply add this to any PHP enabled page
?=PHPB8B5F2A0-3C92-11d3-A3A9-4C7B08C10000
for example:
http://daniweb.com/?=PHPB8B5F2A0-3C92-11d3-A3A9-4C7B08C10000
or
?=PHPE9568F36-D428-11d2-A769-00AA001ACF42
for example:
http://daniweb.com/?=PHPE9568F36-D428-11d2-A769-00AA001ACF42