I suppose you want

 for my $nombre (sort { $a cmp $b or $planets{$a} <=> $planets{$b}  } keys %cuantas_veces_sale)

Though you haven't been clear what %planet holds.

Cheers Rolf

( addicted to the Perl Programming Language)

In reply to Re: Sort hash keys by LanX
in thread Sort hash keys by cristianro87

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