nitty gritty quick explanation..
3dgsHighscores.wdl is a working example. Just make your own test wmb and change the level name on line 8 in the script.
Notice each function is triggered by a keypress, thats just for your testing, remove those parts after testing.
Function txtDump() is for testing too.

Basicly, set the config settings at the top of '3dgsHighscores.php' and upload it to your server.
Now create a table in your mysql db with the same name you used in the config settings. There is a part in '3dgsHighscores.php' to help you do this.

Now you can use '3dgsHighscores.wdl' to test your highscore system. Be sure to change the serverUrl string to point to '3dgsHighscores.php' on your server. The "pretend game code" part is an example of the kind of data you game needs to feed the system.

edit*
oops, might have misread your question.
Mainly the interface is up to you, but let me dig around later, i think I have something.
example wise that is