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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/ Oh Lord, won't you buy me a 4BSD? My    \
| friends all got sources, so why can't I |
| see? Come all you moby hackers, come    |
| sing it out with me: To hell with the   |
\ lawyers from AT&T!                      /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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