Yes, line 15 is a division:

$ratio = $array[3] / $array[4];

The division it is attempting is essentially "zero" because it's attempting to process an empty line after the end of the file.

I am not sure what is actually the issue - although I think it may be the issue I specified in the OP - if so, i'm not entirely sure how to compensate for the splitting of lines. I did try to essentially offset $. myself by subtracting '1' from it everytime the elseif loop criteria is met but the error is still returned.

In reply to Re^2: Illegal division by zero error by TJCooper
in thread Illegal division by zero error by TJCooper

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