The problem is that you're comparing "test" numerically. "test" as a number is 0. 0 != 0 is false.

Assuming you don't want to print the key when it's undefined either, you could do: 

print "\n$key\n" if $key;

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In reply to Re: If condition logic yielding partially correct output by JavaFan
in thread If condition logic yielding partially correct output by perlpal

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