lotto php script wanted

I am looking for an existing lotto php / mysql script. The script's main feature must allow users to register and play a lotto game by choosing a set of numbers. I don't expect an existing script that meets my need perfectly. I am just trying to save time to write the script from ground up. Therefore I am only looking for an existing script, I don't need you to write a new one for me. I will write one myself if I can't find one. If you have an existing script that is similar or close to the description above, please contact me and let me know the features of your script. If the script meets my need, I will buy the script from you.