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Enjoy a randomly generated fortune:

$ fortune | cowsay

 ________________________________________
/ Peterson's Rules:                      \
|                                        |
| (1) Trucks that overturn on freeways   |
| are filled with something sticky.      |
|                                        |
| (2) No cute baby in a carriage is ever |
| a girl when called one.                |
|                                        |
| (3) Things that tick are not always    |
| clocks.                                |
|                                        |
| (4) Suicide only works when you're     |
\ bluffing.                              /
 ----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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