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Enjoy a randomly generated fortune:

$ fortune | cowsay

 ________________________________________
/ ... one of the main causes of the fall \
| of the Roman Empire was that, lacking  |
| zero, they had no way to indicate      |
| successful termination of their C      |
| programs.                              |
|                                        |
\ -- Robert Firth                        /
 ----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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