XML File:

<?xml version="1.0"?>
<?xml-stylesheet href="catalog.xsl" type="text/xsl"?>
<!DOCTYPE catalog SYSTEM "catalog.dtd">
<catalog>
   <product description="Cardigan Sweater" product_image="cardigan.jpg">
      <catalog_item gender="Men's">
         <item_number>QWZ5671</item_number>
         <price>39.95</price>
         <size description="Medium">
            <color_swatch image="red_cardigan.jpg">Red</color_swatch>
            <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
         </size>
         <size description="Large">
            <color_swatch image="red_cardigan.jpg">Red</color_swatch>
            <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
         </size>
      </catalog_item>
      <catalog_item gender="Women's">
         <item_number>RRX9856</item_number>
         <price>42.50</price>
         <size description="Small">
            <color_swatch image="red_cardigan.jpg">Red</color_swatch>
            <color_swatch image="navy_cardigan.jpg">Navy</color_swatch>
            <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
         </size>
         <size description="Medium">
            <color_swatch image="red_cardigan.jpg">Red</color_swatch>
            <color_swatch image="navy_cardigan.jpg">Navy</color_swatch>
            <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
            <color_swatch image="black_cardigan.jpg">Black</color_swatch>
         </size>
         <size description="Large">
            <color_swatch image="navy_cardigan.jpg">Navy</color_swatch>
            <color_swatch image="black_cardigan.jpg">Black</color_swatch>
         </size>
         <size description="Extra Large">
            <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
            <color_swatch image="black_cardigan.jpg">Black</color_swatch>
         </size>
      </catalog_item>
   </product>
</catalog>




Class Output : 

Array
(
    [product] => Array
        (
            [@attributes] => Array
                (
                    [description] => Cardigan Sweater
                    [product_image] => cardigan.jpg
                )

            [catalog_item] => Array
                (
                    [0] => Array
                        (
                            [@attributes] => Array
                                (
                                    [gender] => Men's
                                )

                            [item_number] => QWZ5671
                            [price] => 39.95
                            [size] => Array
                                (
                                    [0] => Array
                                        (
                                            [@attributes] => Array
                                                (
                                                    [description] => Medium
                                                )

                                            [color_swatch] => Array
                                                (
                                                    [0] => Array
                                                        (
                                                            [@content] => Red
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => red_cardigan.jpg
                                                                )

                                                        )

                                                    [1] => Array
                                                        (
                                                            [@content] => Burgundy
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => burgundy_cardigan.jpg
                                                                )

                                                        )

                                                )

                                        )

                                    [1] => Array
                                        (
                                            [@attributes] => Array
                                                (
                                                    [description] => Large
                                                )

                                            [color_swatch] => Array
                                                (
                                                    [0] => Array
                                                        (
                                                            [@content] => Red
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => red_cardigan.jpg
                                                                )

                                                        )

                                                    [1] => Array
                                                        (
                                                            [@content] => Burgundy
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => burgundy_cardigan.jpg
                                                                )

                                                        )

                                                )

                                        )

                                )

                        )

                    [1] => Array
                        (
                            [@attributes] => Array
                                (
                                    [gender] => Women's
                                )

                            [item_number] => RRX9856
                            [price] => 42.50
                            [size] => Array
                                (
                                    [0] => Array
                                        (
                                            [@attributes] => Array
                                                (
                                                    [description] => Small
                                                )

                                            [color_swatch] => Array
                                                (
                                                    [0] => Array
                                                        (
                                                            [@content] => Red
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => red_cardigan.jpg
                                                                )

                                                        )

                                                    [1] => Array
                                                        (
                                                            [@content] => Navy
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => navy_cardigan.jpg
                                                                )

                                                        )

                                                    [2] => Array
                                                        (
                                                            [@content] => Burgundy
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => burgundy_cardigan.jpg
                                                                )

                                                        )

                                                )

                                        )

                                    [1] => Array
                                        (
                                            [@attributes] => Array
                                                (
                                                    [description] => Medium
                                                )

                                            [color_swatch] => Array
                                                (
                                                    [0] => Array
                                                        (
                                                            [@content] => Red
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => red_cardigan.jpg
                                                                )

                                                        )

                                                    [1] => Array
                                                        (
                                                            [@content] => Navy
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => navy_cardigan.jpg
                                                                )

                                                        )

                                                    [2] => Array
                                                        (
                                                            [@content] => Burgundy
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => burgundy_cardigan.jpg
                                                                )

                                                        )

                                                    [3] => Array
                                                        (
                                                            [@content] => Black
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => black_cardigan.jpg
                                                                )

                                                        )

                                                )

                                        )

                                    [2] => Array
                                        (
                                            [@attributes] => Array
                                                (
                                                    [description] => Large
                                                )

                                            [color_swatch] => Array
                                                (
                                                    [0] => Array
                                                        (
                                                            [@content] => Navy
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => navy_cardigan.jpg
                                                                )

                                                        )

                                                    [1] => Array
                                                        (
                                                            [@content] => Black
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => black_cardigan.jpg
                                                                )

                                                        )

                                                )

                                        )

                                    [3] => Array
                                        (
                                            [@attributes] => Array
                                                (
                                                    [description] => Extra Large
                                                )

                                            [color_swatch] => Array
                                                (
                                                    [0] => Array
                                                        (
                                                            [@content] => Burgundy
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => burgundy_cardigan.jpg
                                                                )

                                                        )

                                                    [1] => Array
                                                        (
                                                            [@content] => Black
                                                            [@attributes] => Array
                                                                (
                                                                    [image] => black_cardigan.jpg
                                                                )

                                                        )

                                                )

                                        )

                                )

                        )

                )

        )

)