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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/ Von Neumann was the subject of many     \
| dotty professor stories. Von Neumann    |
| supposedly had the habit of simply      |
| writing answers to homework assignments |
| on the board (the method of solution    |
| being, of course, obvious) when he was  |
| asked how to solve problems. One time   |
| one of his students tried to get more   |
| helpful information by asking if there  |
| was another way to solve the problem.   |
| Von Neumann looked blank for a moment,  |
\ thought, and then answered, "Yes.".     /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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