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Enjoy a randomly generated fortune:

$ fortune | cowsay

 ________________________________________
/ "You are old," said the youth, "and    \
| your programs don't run,               |
|                                        |
| And there isn't one language you like; |
| Yet of useful suggestions for help you |
| have none --                           |
|                                        |
| Have you thought about taking a hike?" |
|                                        |
| "Since I never write programs," his    |
| father replied,                        |
|                                        |
| "Every language looks equally bad; Yet |
| the people keep paying to read all my  |
| books                                  |
|                                        |
| And don't realize that they've been    |
\ had."                                  /
 ----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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