[JJB562]

Since, you have barely started on this script. I would suggest to switch dini to y_ini.
Also, the main problem is this piece of the code.

pawn Код:

new string[30];
format(string, 30, "%s\r\n", pname);
fwrite(ftw, string);

Your user system is terrible. By looking at the script, it seems that you are saving stats based on name. Although this necessarily isn't bad, the system doesn't require a password so anyone could just login as a user, even though it's not their account.

Here's a great tutorial that will help you on your register/login system:
https://sampforum.blast.hk/showthread.php?tid=273088

However, instead of using 'udb_hash' as the hashing system. Use Whirlpool instead since it is far more secure.