upload systeem

ik ben bezig met een upload systeem maar hoe haal ik het bestand door een md5 ofzoiets?
dus als je hoi.gif upload dat er van word gemaakt: fhdmf94jmf9d4.gif
code van het upload systeem:

[COLOR= #0000BB]<?PHP[/COLOR]
[URL="http://www.php.net/if"]if[/URL][COLOR= #007700](![/COLOR][URL="http://www.php.net/empty"]empty[/URL][COLOR= #007700]([/COLOR][COLOR= #0000BB]$_POST[/COLOR][COLOR= #007700])){[/COLOR] 
[COLOR= #0000BB]$locatie[/COLOR][COLOR= #007700]=[/COLOR][COLOR= #DD0000]"uploads/"[/COLOR][COLOR= #007700];[/COLOR]
[COLOR= #0000BB]$url[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #DD0000]"http://83.84.195.228/uploaden/$locatie"[/COLOR][COLOR= #007700];[/COLOR]
   [URL="http://www.php.net/if"]if[/URL][COLOR= #007700]([/COLOR][URL="http://www.php.net/is_uploaded_file"]is_uploaded_file[/URL][COLOR= #007700]([/COLOR][COLOR= #0000BB]$_FILES[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]afbeelding[/COLOR][COLOR= #007700]][[/COLOR][COLOR= #DD0000]tmp_name[/COLOR][COLOR= #007700]])) 
   {[/COLOR] 
        [URL="http://www.php.net/if"]if[/URL][COLOR= #007700]([/COLOR][COLOR= #0000BB]$_FILES[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]afbeelding[/COLOR][COLOR= #007700]][[/COLOR][COLOR= #DD0000]size[/COLOR][COLOR= #007700]]>[/COLOR][COLOR= #0000BB]9999[/COLOR][COLOR= #007700]) 
                   {[/COLOR] 
                   [URL="http://www.php.net/echo"]echo[/URL] [COLOR= #DD0000]"Het bestand is te groot"[/COLOR][COLOR= #007700];[/COLOR] 
                   [URL="http://www.php.net/exit"]exit[/URL][COLOR= #007700]; 
                   }[/COLOR] 

        [COLOR= #FF8000]//controleer extensie, voeg maar andere toe [/COLOR]
        [URL="http://www.php.net/if"]if[/URL][COLOR= #007700](![/COLOR][URL="http://www.php.net/eregi"]eregi[/URL][COLOR= #007700]([/COLOR][COLOR= #DD0000]"((.gif|.jpg|.png)$)"[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]$_FILES[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]afbeelding[/COLOR][COLOR= #007700]][[/COLOR][COLOR= #DD0000]name[/COLOR][COLOR= #007700]])) 
                   {[/COLOR] 
                   [URL="http://www.php.net/echo"]echo[/URL] [COLOR= #DD0000]"het bestand is niet van het juiste type"[/COLOR][COLOR= #007700];[/COLOR] 
                   [URL="http://www.php.net/exit"]exit[/URL][COLOR= #007700]; 
                   }[/COLOR] 


        [URL="http://www.php.net/if"]if[/URL][COLOR= #007700](![/COLOR][URL="http://www.php.net/move_uploaded_file"]move_uploaded_file[/URL][COLOR= #007700]([/COLOR][COLOR= #0000BB]$_FILES[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]afbeelding[/COLOR][COLOR= #007700]][[/COLOR][COLOR= #DD0000]tmp_name[/COLOR][COLOR= #007700]],[/COLOR] 
                               [COLOR= #0000BB]$locatie[/COLOR][COLOR= #007700].[/COLOR][COLOR= #0000BB]$_FILES[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]afbeelding[/COLOR][COLOR= #007700]][[/COLOR][COLOR= #DD0000]name[/COLOR][COLOR= #007700]])) 

                  {[/COLOR] 
                  [URL="http://www.php.net/echo"]echo[/URL][COLOR= #DD0000]" het plaatje / bestand kan niet worden geupload"[/COLOR][COLOR= #007700];[/COLOR] 
                  [URL="http://www.php.net/exit"]exit[/URL][COLOR= #007700]; 
                  }[/COLOR] 

                  [URL="http://www.php.net/echo"]echo[/URL] [COLOR= #DD0000]"je plaatje is geupload.<br>"[/COLOR][COLOR= #007700];[/COLOR]
                  [URL="http://www.php.net/include"]include[/URL] [COLOR= #007700]([/COLOR][COLOR= #DD0000]"includes/geupload.php"[/COLOR][COLOR= #007700]);
   }[/COLOR] 
     
   [URL="http://www.php.net/else"]else[/URL] 
   [COLOR= #007700]{[/COLOR] 
   [URL="http://www.php.net/echo"]echo[/URL] [COLOR= #DD0000]"Het uploaden is helaas mislukt"[/COLOR][COLOR= #007700]; 
   } 
     

}[/COLOR] 
[URL="http://www.php.net/else"]else[/URL][COLOR= #007700]{[/COLOR] 
?> 
     <form method="post" action="[COLOR= #0000BB]<?php[/COLOR] [URL="http://www.php.net/echo"]echo[/URL] [COLOR= #0000BB]$_SERVER[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]PHP_SELF[/COLOR][COLOR= #007700]];[/COLOR] ?>" enctype="multipart/form-data"> 
     <input type="file" name="afbeelding"><br>
     <input type="submit" name="submit" value="uploaden"> 
     </form> 
[COLOR= #0000BB]<?php[/COLOR] 
     [COLOR= #007700]}[/COLOR] 
?>

en de code van geupload is niks dat je het vast weet

BUMB!

We hebben denk ik geupload nodig, want hier kan ik niet veel uithalen

code geupload.php:

EDIT: daar staat dus niks