Take that line out from the code, and it looks like:

  $lengthandn = $line[4] . ',', $line[5];
[download]

I suspect that the last comma on the line was intended to be a period, which eliminates the error, and is probably what you wanted, leaving:

  $lengthandn = $line[4] . ',' . $line[5];
[download]

Update: Oops - didn't see the earlier of the duplicated posts with answers already provided.