XML to JSON Converter

<?xml version="1.0" encoding="UTF-8"?>
<bookstore>
  <book category="fiction">
    <title>The Great Gatsby</title>
    <author>F. Scott Fitzgerald</author>
    <year>1925</year>
    <price>10.99</price>
  </book>
</bookstore>

{
  "bookstore": {
    "book": {
      "@_category": "fiction",
      "title": "The Great Gatsby",
      "author": "F. Scott Fitzgerald",
      "year": 1925,
      "price": 10.99
    }
  }
}