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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/  HOW TO PROVE IT, PART 7 proof by       \
| forward reference:                      |
|                                         |
| Reference is usually to a forthcoming   |
| paper of the author,                    |
|                                         |
| which is often not as forthcoming as at |
| first.                                  |
|                                         |
| proof by semantic shift:                |
|                                         |
| Some of the standard but inconvenient   |
| definitions are changed                 |
|                                         |
| for the statement of the result.        |
|                                         |
| proof by appeal to intuition:           |
|                                         |
| Cloud-shaped drawings frequently help   |
\ here.                                   /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

$output = shell_exec("/usr/games/fortune | /usr/games/cowsay");
echo $output;