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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/ Ever since prehistoric times, wise men  \
| have tried to understand what, exactly, |
| make people laugh. That's why they were |
| called "wise men." All the other        |
| prehistoric people were out puncturing  |
| each other with spears, and the wise    |
| men were back in the cave saying: "How  |
| about: Would you please take my wife?   |
| No. How about: Here is my wife, please  |
| take her right now. No How about: Would |
| you like to take something? My wife is  |
| available. No. How about ..."           |
|                                         |
\ -- Dave Barry, "Why Humor is Funny"     /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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