[GTLS]

What others simply meant was, Fire this query,

Код:

 SELECT pPhoneNumber from `users` where pPhoneNumber = RandNumber //or what ever your variables are.

Then, inside the threaded function, check for number of rows affected.

Код:

 cache_affected_rows()

If the number is not zero, it means the number already exists within some other player. In that case, return 0 to the function and re call the random value generation to do all this again until you find a random number.


Tip: You can save all new numbers inside a .ini file or something. Only numbers. When a player buys a new phone, get the values from that file and if none of them matches the number, assign it to new buyer.