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Enjoy a randomly generated fortune:

$ fortune | cowsay

 ________________________________________
/ Bennett's Laws of Horticulture:        \
|                                        |
| (1) Houses are for people to live in.  |
|                                        |
| (2) Gardens are for plants to live in. |
|                                        |
| (3) There is no such thing as a        |
\ houseplant.                            /
 ----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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