Hi Everyone, I'm parsing XML data using xml:libxml and am trying to determine the last category based on "category_id" and "parent_id" but can't figure out the logic to do it through hashes or arrays. The XML looks like this where the last category should be "Carrot" 
<products>
    <product>
        <categories>
            <category>
                <category_id>443120</category_id>
                <name>Vegetables</name>
                <parent_id>443026</parent_id>
            </category>
            <category>
                <category_id>445720</category_id>
                <name>Carrot</name>
                <parent_id>443120</parent_id>
            </category>
            <category>
                <category_id>443026</category_id>
                <name>Food</name>
            </category>
        </categories>
     </product>
<products>

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I've put it into a hash like this but can't figure out how to loop through the hash and determine the last category. 
$VAR1 = {
          'Vegetables' => {
                            'id' => '443120',
                            'parent_id' => '443026'

                                                       },
          'Food' => {
                      'parent_id' => '',
                       'id' => '443026'
                                     },
          'Carrot' => {
                        'parent_id' => '443120',
                        'id' => '445720'
                           }
        };

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This is my current code 

foreach my $part ($dom->findnodes('/products/product')) {
    foreach my $categories($part->findnodes('./categories/category')) 
+{
        
        $cat_name = $categories->findvalue("name");
        $cat_id = $categories->findvalue("category_id");
        $cat_parent_id = $categories->findvalue("parent_id");
                
        $catdata{$cat_name} = {"id" => $cat_id, "parent_id" => $cat_pa
+rent_id};
            
                            
    }
}

[download]

In reply to Hash or Array - Logic Help by audioboxer

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