use XML::Parser;
  my $p = XML::Parser‐>new(Style => ’Tree’);
  my $tree = $p‐>parsefile(’foo.xml’);

This module implements XML::Parser’s Tree style parser.

     When parsing a document, "parse()" will return a parse
tree for the document. Each node in the tree takes the form
of a tag, content pair. Text nodes are represented with a
pseudo‐tag of "0" and the string that is their content. For
elements, the content is an array reference. The first item
in the array is a (possibly empty) hash reference containing
attributes. The remainder of the array is a sequence of tag‐
content pairs representing the content of the element.

     So for example the result of parsing:

       <foo><head id="a">Hello <em>there</em></head><bar>Howdy<ref/></bar>do</foo>

     would be:
             Tag   Content
  [foo, [{}, head, [{id => "a"}, 0, "Hello ",  em, [{}, 0,
              bar, [         {}, 0, "Howdy",  ref, [{}]],
                0, "do"

     The root document "foo", has 3 children: a "head"
element, a "bar" element and the text "do". After the empty
attribute hash, these are represented in it’s contents by 3
tag‐content pairs.