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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/  THE LESSER-KNOWN PROGRAMMING LANGUAGES \
| #17: SARTRE                             |
|                                         |
| Named after the late existential        |
| philosopher, SARTRE is an extremely     |
| unstructured language. Statements in    |
| SARTRE have no purpose; they just are.  |
| Thus SARTRE programs are left to define |
| their own functions. SARTRE programmers |
| tend to be boring and depressed, and    |
\ are no fun at parties.                  /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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