scan 1.4.7

scanner = peripheral.wrap("left")
timeInterval = 1
logOutputFile = "playerLog"
newLogTitle = "New logging session started."

time = {m = -timeInterval, h = 0, d = 0}

while true do

  players = scanner.getPlayerNames()
  time.m = time.m + timeInterval

  if time.m >= 60 then

    time.m = time.m - 60
    time.h = time.h + 1
    if players[1] == nil then logger("Nobody is here.", false) end
  end

  if time.h >= 24 then time.h = time.h - 24 time.d = time.d + 1 end

  function logger(input, title)

    logFile = fs.open(logOutputFile,"a")
    log = input

    if title == false then

      log = "[" .. tostring(time.m) .. "/" .. tostring(time.h) .. "/" .. tostring(time.d) .. "] " .. input
    end

    print(log)
    logFile.writeLine(log)
    logFile.close()
  end

  if time.m == 0 and time.h == 0 and time.d == 0 then logger("\n" .. newLogTitle, true) end

  for i=1,#players do

    logger(players[i])
  end

  sleep(timeInterval * 60)
end