Populate an HTML table with XML data

I would like to populate a table with data from an XML file.

I was thinking along the lines of:

1) create XML data:

<menu>
<pizza> 
    <regular>
            <item name="Tomato Cheese">Tomato Cheese
                <price small="small">1</price>
                <price large="large">2</price>
                <description>A</description>
            </item>
            <item name="Onion">Onion
                <price small="small">3</price>
                <price large="large">4</price>
                <description>B</description>
            </item>
    </regular>
  </pizza>
</menu>

2) create the table in HTML:

<table border="1">
  <thead>
    <tr>
      <th rowspan="2">Item </th>
      <th rowspan="2">Description</th>
      <th colspan="2">Price</th>
    </tr>
    <tr>
      <th>Small</th>
      <th>Large</th>
    </tr>
  </thead>
  <tbody>

3)use a foreach statement on an xml query:

 foreach  ($xml->xpath('/menu/pizza/descendant::item') as $item)
        {
            print "<tr><td>".$item."</td><tr>" ;
        } 

This works great for the first row, but I can't figure out how to populate the rest of the columns.