gistfile1.txt

if($provincial) {
  //provincial
  if($weight <= 1) {
  return 120;
  } elseif($weight <= 2) {
      return 160;
  } else {
      return 160 + (ceil($weight - 2) * 60);
  }
} else {
  if($cod) {
      //metro manila cod
       if($weight <= 1) {
          return 100;
      } elseif($weight <= 3) {
          return 130;
      } else {
          return 130 + (ceil($weight - 3) * 50);
      }
  } else {
      //metro manila non cod
      if($weight <= 1) {
          return 65;
      } elseif($weight <= 3) {
          return 120;
      } else {
          return 120 + (ceil($weight - 3) * 30);
      }
  }
}