[DreamKillah]

Guys can someone tell me how to make a /register, and /login using <a_samp> only? and can someone tell me or how can I make my server be on Internet? or make it go online?

[Carlton]

SA:MP has file functions, use the functions found here

Your second question's answer is here (4th question)
https://sampforum.blast.hk/showthread.php?tid=106958