example.sh

curl http://example.com/test.php -d h-entry[p-author][p-name]=Aaron+Parecki -d h-entry[p-author][u-url]=http://aaronparecki.com

php-result.txt

Array
(
    [h-entry] => Array
        (
            [p-author] => Array
                (
                    [p-name] => Aaron Parecki
                    [u-url] => http://aaronparecki.com
                )

        )

)

ruby-result.txt

{"h-entry"=>{"p-author"=>{"p-name"=>"Aaron Parecki", "u-url"=>"http://aaronparecki.com"}}}