Sort isn't acting like I expect it to and I'm a little confused. I have a hash reference that looks like this:

$sort_line_contents->{element_one}->{element_two}
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I want to reverse sort on element_one (numerically) and then sort normally on element_two. Here is an example of my data set:

$sort_line_contents->{1}->{2} = Item1;
$sort_line_contents->{0}->{3} = Item2;
$sort_line_contents->{1}->{4} = Item3;
$sort_line_contents->{1}->{5} = Item4;
$sort_line_contents->{2}->{6} = Item5;
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I want to take that information and force it into an order like this:
Item5
Item1
Item3
Item4
Item2

My first crack at this was using a sort statement like so:

my @hash_keys2  =   sort { %{$sort_line_contents}->{$b} <=> %{$sort_li
+ne_contents}->{$a} } keys %{$sort_line_contents};
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But this gives me an incorrect order. Instead of giving me an order like this: 2, 1, 1, 1, 0 it gives me something like 0, 2, 1, 1, 1. I could not get this straightened out, so eventually ended up substituting this line:

foreach (reverse sort keys %{$sort_line_contents}) { push(@hash_keys2,
+$_);}
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I'm even more confused because the second sort using the second value works AS EXPECTED:

foreach my $hk (@hash_keys2){

    my @filli =  sort {
                         $sort_line_contents->{$hk}->{$a} <=> $sort_li
+ne_contents->{$hk}->{$b}
              } keys %{$sort_line_contents->{$hk}};

  foreach (@filli){
    #output to other part of program
     }
   }
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My question is, why doesn't the sort on the hash ref give me the expected behaviour? Is there a problem with the way I am expanding my $sort_line_contents reference? I see that it is reading out the correct VALUES, it is just putting them in an unexpected order. I get the same unexpected order with the <=> and the cmp operators???

oakbox