Follow-up: pastebin.com/KZGtphXG

-- LUA BY CSENDES MARCELL

-- MySQL Connection Details:
sql_host = "" -- Host
sql_user = "" -- USER
sql_password = "" --Pass
sql_db_name = "cs2d" -- DBNAME
sql_port = 3306 -- Default Port usually this, do not change it, if you are not sure what is it.

-- Adding Hooks
addhook("join", "logPlayer")
addhook("join", "JoinMessage")
addhook("minute", "saveStats")
addhook("say", "logChat")
addhook("say","RegisterLogin")
addhook("say","testsay")



-- Configuration --
server = " CS2D Online" -- server name
version = " 0.1a" -- version of script
LoggedIn = false -- Unregisted user's status, when he/she joins to server.


color = {
        "©552220000", -- CS2D (yellow) 1
        "©255255255", -- white 2
        "©255000000", -- red 3
        "©000255000", -- green 4
        "©000000255", -- blue 5
        "©220220220", -- light grey 6
        "©064179162", -- PM - light blue 7
        "©255025000", -- T 8
        "©050150255", -- CT 9
        "©100100100" -- pretty dark grey - tag 10
}

-- Connection LUA and between MySQL Server
luasql = require "luasql.mysql"
env = assert (luasql.mysql())
con = assert(env:connect(sql_db_name,sql_user,sql_password,sql_host,sql_port))

-- Functions

function CheckMySQL()
    print("Connecting to sql server")   -- you need most prints BEFORE executing stuff, not after doing that
    if assert(env:connect(sql_db_name,sql_user,sql_password,sql_host,sql_port)) then    -- dont you do that in line 42 already?
    print("©000255000The connection for MySQL server was successfully")
    else
    print("©255000000The connection wasn't successful for MySQL check your server and/or configuration in index.lua")
    end
end

CheckMySQL()

function JoinMessage(id)
    msg2(id, "©255255255Welcome on the ©55220000"..server.." ©255255255server!")
    msg2(id, "©255255255Our Gamemode running under ©55220000"..version.." ©255255255version.")
    msg2(id, "©000255000To register on our server just use !register <username> <password>")
    msg2(id, "©000255000You will be automatically logged in after you register an account.")
end

function DoLogin(id)

local usgn = player(id, "usgn")
if usgn > 0 then
    LoggedIn = true
    end
end

function _DoLogin(id)
    DoLogin(id)
    if LoggedIn then
        msg2(id, "©000255000You have been successfully logged in.")
    end
end

function DoLogout(id)

local usgn = player(id, "usgn")

if usgn > 0 then
    LoggedIn = false
    end
end

function VerifyLogin(id)

local usgn = player(id, "usgn")
if usgn > 0 then
    if LoggedIn == false then
    msg2(id, "Please register or log in to play on the server.")
    elseif LoggedIn == true then
        return 0;
    end
end
end

function RegisterLogin(id,txt)
print("Received command! ".. tostring(id) .." ; "..tostring(txt))
local usgn = player(id, "usgn")
local space = txt:find(" ") or #txt + 1
local cmd = txt:sub(1, space - 1)

if cmd == "!login" then
    print("Command is !login")
        cur = con:execute("select * from users")
        print("cur/row line")
        row = cur:fetch({}, 'a')
        print("row succeeded")
        for k, v in pairs(row) do
        print("pairs...")
        print(k, v)
    end
end


if cmd=="!register" then
                local regName, regPW = txt:match("!register ([%a|%d]+) ([%a|%d]+)")
                local regDate = os.date("%c")

                if usgn > 0 then
                        res = assert (con:execute(string.format([[INSERT INTO users VALUES ('%s', '%s', '%s')]], regName, regPW, regDate)))
                msg2(id, "©000255000Congratulations! You have been successfully registered!")
                msg2(id, "©000255000Username: ©255255255"..regName)
                msg2(id, "©000255000Password: ©255255255"..regPW)
                msg2(id, "©255255255You will be automatically logged in after 5 second(s)")
                timer(5000,'parse','lua _DoLogin('..id..')')
        end
        end
end


function logPlayer(id)
print("logPlayer: " ..tostring(id))
local usgn = player(id, "usgn")
local ip = player(id, "ip")
local name = player(id, "name")
local datime = os.date("%c")

    if usgn > 0 then
        print("logPlayer: USGN>0")
        res = assert (con:execute(string.format([[
            INSERT INTO logins
            VALUES ('%s', '%s', '%s', '%s')]], usgn, ip, name, datime)
        ))
        print("logPlayer: USGN>0 STATUS: OK")
    elseif usgn == 0 then
        print("logPlayer: USGN==0")
        res = assert (con:execute(string.format([[
            INSERT INTO bots
            VALUES ('%s', '%s')]], name, datime)
        ))
        print("logPlayer: USGN==0 STATUS: OK")
    end
end


function logChat(id, msg)
print("logChat")
local usgn = player(id, "usgn")
local ip = player(id, "ip")
local name = player(id, "name")
local datime = os.date("%c")

        if usgn > 0 then
        print("logChat USGN>0")
        res = assert (con:execute(string.format([[
                INSERT INTO chats
                VALUES ('%s', '%s', '%s', '%s', '%s')]], usgn, ip, name, datime, msg)
        ))
        end
        print("logChat STATUS: OK")
end

function saveStats(id)
print("SaveStats")
                for _, id in pairs(player(0,"table")) do
                local usgn = player(id, "usgn")
                local level = player(id, "score")
                local ip = player(id, "ip")
                local name = player(id, "name")
                local datime = os.date("%c")
                if usgn > 0 then
                if VerifyLogin(id) then
                if level > 0 then
                print("logStats level > 0")
                          res = assert (con:execute(string.format([[
                          INSERT INTO stats
                          VALUES ('%s', '%s', '%s', '%s', '%s')]], usgn, ip, name, datime, level)
                          ))
                print("©000255000The players's stats have been saved into MYSQL on ©255255255"..datime)
                else
                    print("logSTATS: return 0")
                        return 0;
                end
            end
        end
    end
    print("logStats STATUS: OK")
end