You can generate multikey sorters easily with Sort::Key: 
use Sort::Key::Multi 'iiikeysort'; 
  # the 'iii' stands for three integer keys

my (%month, $month);
$month{$_} = ++$month for qw(jan feb mar apr ...);

@sorted = iiikeysort { /^webadmin_(\w+)_(\d+)_(\d+)\.log$/;
                        ($3, $month{$1}, $2) } @filenames;

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In reply to Re: Sort an array which contains date formatted elements by salva
in thread Sort an array which contains date formatted elements by msk_0984

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