Your variable $parsed should now contain a hash ref which looks like: 

{
  'employee' => [
                {
                  'empid' => '9',
                  'lname' => 'A',
                  'fname' => 'Joe'
                },
                {
                  'empid' => '3',
                  'lname' => 'W',
                  'fname' => 'Larry'
                },
                {
                  'empid' => '7',
                  'lname' => '6',
                  'fname' => 'Perl'
                }
              ]
};

[download]

So, you want to sort the array referenced by the value of the 'employee' key: 

@{ $parsed->{'employee'} } = sort { 
    $a->{'empid'} <=> $b->{'empid'} 
} @{ $parsed->{'employee'} };

print XMLout($parsed, NoAttr=>1, RootName=>'employees');

[download]

This will print: 

<employees>
  <employee>
    <empid>3</empid>
    <fname>Larry</fname>
    <lname>W</lname>
  </employee>
  <employee>
    <empid>7</empid>
    <fname>Perl</fname>
    <lname>6</lname>
  </employee>
  <employee>
    <empid>9</empid>
    <fname>Joe</fname>
    <lname>A</lname>
  </employee>
</employees>

[download]
<-radiant.matrix->
Larry Wall is Yoda: there is no try{} (ok, except in Perl6; way to ruin a joke, Larry! ;P)
The Code that can be seen is not the true Code
"In any sufficiently large group of people, most are idiots" - Kaa's Law

In reply to Re: sorting on subkey of hash of hashes by radiantmatrix
in thread sorting on subkey of hash of hashes by Anonymous Monk

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