local accounts = {user1 = "password", user2 = "lol"};

local usernameFromClient = "user1";
local passwordFromClient = "password";

if(accounts[usernameFromClient] ~= nil) then
	if(accounts[usernameFromClient] == passwordFromClient) then
		print("Logged in!");
	else
		print("Wrong password.");
	end
else
	print("Wrong username.");
end