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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/ > When there isn't sufficient virtual   \
| memory, the compiler bails out, >       |
| giving an internal error message. When  |
| I kill some processes, the > error goes |
| away.                                   |
|                                         |
| And what is the compiler supposed to do |
| instead? Go shopping for you and buy    |
| more memory?                            |
|                                         |
| -- Falk Hueffner, on the GNU C++        |
\ compiler                                /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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