hold on ... even better

  if($level=="Level 1" && $month=="Month 1")
  {
    $newLevel="Level 1";
    $newMonth="Month 2";
  }
  else if($level=="Level 1" && $month=="Month 2")
  {
    $newLevel="Level 1";
    $newMonth="Month 3";
  }
  else if($level=="Level 1" && $month=="Month 3")
  {
    $newLevel="Level 1";
    $newMonth="Month 4";
  }
  else if($level=="Level 1" && $month=="Month 4")
  {
    $newLevel="Level 1";
    $newMonth="Month 5";
  }
  else if($level=="Level 1" && $month=="Month 5")
  {
    $newLevel="Level 1";
    $newMonth="Month 6";
  }
  else if($level=="Level 1" && $month=="Month 6")
  {
    $newLevel="Level 2";
    $newMonth="Month 1";
  }
  else if($level=="Level 2" && $month=="Month 1")
  {
    $newLevel="Level 2";
    $newMonth="Month 2";
  }
  else if($level=="Level 2" && $month=="Month 2")
  {
    $newLevel="Level 2";
    $newMonth="Month 3";
  }
  else if($level=="Level 2" && $month=="Month 3")
  {
    $newLevel="Level 2";
    $newMonth="Month 4";
  }
  else if($level=="Level 2" && $month=="Month 4")
  {
    $newLevel="Level 2";
    $newMonth="Month 5";
  }
  else if($level=="Level 2" && $month=="Month 5")
  {
    $newLevel="Level 2";
    $newMonth="Month 6";
  }
  else if($level=="Level 2" && $month=="Month 6")
  {
    $newLevel="Level 3";
    $newMonth="Month 1";
  }
  else if($level=="Level 3" && $month=="Month 1")
  {
    $newLevel="Level 3";
    $newMonth="Month 2";
  }
  else if($level=="Level 3" && $month=="Month 2")
  {
    $newLevel="Level 3";
    $newMonth="Month 3";
  }
  else if($level=="Level 3" && $month=="Month 3")
  {
    $newLevel="Level 3";
    $newMonth="Month 4";
  }
  else if($level=="Level 3" && $month=="Month 4")
  {
    $newLevel="Level 3";
    $newMonth="Month 5";
  }
  else if($level=="Level 3" && $month=="Month 5")
  {
    $newLevel="Level 3";
    $newMonth="Month 6";
  }
  else if($level=="Level 3" && $month=="Month 6")
  {
    $newLevel="Level 4";
    $newMonth="Month 1";
  }
  else if($level=="Level 4" && $month=="Month 1")
  {
    $newLevel="Level 4";
    $newMonth="Month 2";
  }
  else if($level=="Level 4" && $month=="Month 2")
  {
    $newLevel="Level 4";
    $newMonth="Month 3";
  }
  else if($level=="Level 4" && $month=="Month 3")
  {
    $newLevel="Level 4";
    $newMonth="Month 4";
  }
  else if($level=="Level 4" && $month=="Month 4")
  {
    $newLevel="Level 4";
    $newMonth="Month 5";
  }
  else if($level=="Level 4" && $month=="Month 5")
  {
    $newLevel="Level 4";
    $newMonth="Month 6";
  }

That must have taken like days or something ... I don't know if the programmer even knew about the advanced "copy" and "paste" concepts.