Example:
Given this input: a=7&b=1&text=Some+text+goes+here&required=Yes&submit=submit
Produce this data structure:

my $data = [
  'a' => 7,
  'b' => 1,
  'text' => 'Some text goes here',
  'required' => 'Yes',
  'submit' => 'submit',
];
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The intended use is in a script that tests subroutines that are used inside of a mod_perl application. The subroutine under test expects pre-parsed post data in an array structure like that above. I'm using HTML::Form to extract and parse form data from an HTML page, then using it's $form->click method to click on various submit buttons on that page. $form->click returns an HTTP::Request object, from which I can extract the post data as a string (urlescaped and joined by ampersands), but I need to get that data properly parsed and unescaped to send it as input to the subroutine that I'm testing.