Something to do for undefs: coerce to zero. 

c:\@Work\Perl\monks>perl -wMstrict -MData::Dump -le
"my $hashref = {
   '10857' => [
     '10857',
     'Test-host1',
     '192.168.162.124',
     undef,
     undef,
     undef,
     undef,
     'Timeout while connecting to \"192.168.162.124:161\"',
     ],
   '10715' => [
     '10715',
     'Test-Host2',
     '192.168.162.146',
     'checkPing[{HOST.IP}]',
     '108',
     '108',
     '2014-04-01 20:24:01',
     '',
     ],
   '10778' => [
     '10778',
     'Test-Host3',
     '192.168.162.144',
     'checkPing[{HOST.IP}]',
     '392',
     '359',
     '2014-04-01 20:21:12',
     '',
     ],
   '10582' => [
     '10582',
     'Test-Host3',
     '192.168.162.95',
     'icmppingsec',
     '117.390000',
     '116.493000',
     '2014-04-01 20:23:03',
     '',
     ],
   };
 ;;
 my @sorted = do {
   no warnings 'uninitialized';
   sort { $a->[4] <=> $b->[4] } values %$hashref;
   };
 ;;
 dd \@sorted;
"
[
  [
    10857,
    "Test-host1",
    "192.168.162.124",
    undef,
    undef,
    undef,
    undef,
    "Timeout while connecting to \"192.168.162.124:161\"",
  ],
  [
    10715,
    "Test-Host2",
    "192.168.162.146",
    "checkPing[{HOST.IP}]",
    108,
    108,
    "2014-04-01 20:24:01",
    "",
  ],
  [
    10582,
    "Test-Host3",
    "192.168.162.95",
    "icmppingsec",
    "117.390000",
    "116.493000",
    "2014-04-01 20:23:03",
    "",
  ],
  [
    10778,
    "Test-Host3",
    "192.168.162.144",
    "checkPing[{HOST.IP}]",
    392,
    359,
    "2014-04-01 20:21:12",
    "",
  ],
]

[download]

In reply to Re^2: Need to sort and data structure based on values inside arrayrefs. by AnomalousMonk
in thread Need to sort and data structure based on values inside arrayrefs. by shekarkcb

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