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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/ methionylglutaminylarginyltyrosylglutam \
| ylserylleucylphenylalanylalanylglutamin |
| -                                       |
| ylleucyllysylglutamylarginyllysylglutam |
| ylglycylalanylphenylalanylvalylprolyl-  |
| phenylalanylvalylthreonylleucylglycylas |
| partylprolylglycylisoleucylglutamylglu- |
| taminylserylleucyllysylisoleucylasparty |
| lthreonylleucylisoleucylglutamylalanyl- |
| glycylalanylaspartylalanylleucylglutamy |
| lleucylglycylisoleucylprolylphenylala-  |
| nylserylaspartylprolylleucylalanylaspar |
| tylglycylprolylthreonylisoleucylgluta-  |
| minylasparaginylalanylthreonylleucylarg |
| inylalanylphenylalanylalanylalanylgly-  |
| cylvalylthreonylprolylalanylglutaminylc |
| ysteinylphenylalanylglutamylmethionyl-  |
| leucylalanylleucylisoleucylarginylgluta |
| minyllysylhistidylprolylthreonylisoleu- |
| cylprolylisoleucylglycylleucylleucylmet |
| hionyltyrosylalanylasparaginylleucylva- |
| lylphenylalanylasparaginyllysylglycylis |
| oleucylaspartylglutamylphenylalanyltyro |
| -                                       |
| sylalanylglutaminylcysteinylglutamyllys |
| ylvalylglycylvalylaspartylserylvalylleu |
| -                                       |
| cylvalylalanylaspartylvalylprolylvalylg |
| lutaminylglutamylserylalanylprolylphe-  |
| nylalanylarginylglutaminylalanylalanyll |
| eucylarginylhistidylasparaginylvalylala |
| -                                       |
| nylprolylisoleucylphenylalanylisoleucyl |
| cysteinylprolylprolylaspartylalanylas-  |
| partylaspartylaspartylleucylleucylargin |
| ylglutaminylisoleucylalanylseryltyrosyl |
| -                                       |
| glycylarginylglycyltyrosylthreonyltyros |
| ylleucylleucylserylarginylalanylglycyl- |
| valylthreonylglycylalanylglutamylaspara |
| ginylarginylalanylalanylleucylprolylleu |
| -                                       |
| cylasparaginylhistidylleucylvalylalanyl |
| lysylleucyllysylglutamyltyrosylasparagi |
| -                                       |
| nylalanylalanylprolylprolylleucylglutam |
| inylglycylphenylalanylglycylisoleucylse |
| -                                       |
| rylalanylprolylaspartylglutaminylvalyll |
| ysylalanylalanylisoleucylaspartylalanyl |
| -                                       |
| glycylalanylalanylglycylalanylisoleucyl |
| serylglycylserylalanylisoleucylvalylly- |
| sylisoleucylisoleucylglutamylglutaminyl |
| histidylasparaginylisoleucylglutamylpro |
| -                                       |
| lylglutamyllysylmethionylleucylalanylal |
| anylleucyllysylvalylphenylalanylvalyl-  |
| glutaminylprolylmethionyllysylalanylala |
| nylthreonylarginylserine, n.:           |
|                                         |
| The chemical name for tryptophan        |
| synthetase A protein, a                 |
|                                         |
| 1,913-letter enzyme with 267 amino      |
| acids.                                  |
|                                         |
| -- Mrs. Byrne's Dictionary of Unusual,  |
| Obscure, and                            |
|                                         |
\ Preposterous Words                      /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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