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$outputb = "\t$resultarray[3]";

#!/usr/bin/env perl -l

...
        print "$name (with value: '$value') DOES NOT MATCH zero.";
    }
}

$resultarray[3] = |0|
$outputb = |    0|
$resultarray[3] (with value: '0') MATCHES zero.
$outputb (with value: '    0') DOES NOT MATCH zero.