Convert PHP array to XML with support for attributes and CDATA

Entire project is based on this issue responses.

Sample usage (it's just a code from my project):

THE CODE:

$xml = new ArrayToXML();
print $xml->buildXML($input);

INPUT:

$input = array('product' => array(
      '@id' => 7,
      'name' => 'some string',
      'seo' => 'some-string',
      'ean' => '',
      'producer' => array(
          'name' => null,
          'photo' => '1.png'
      ),
      'stock' => 123,
      'trackstock' => 0,
      'new' => 0,
      'pricewithoutvat' => 1111,
      'price' => 1366.53,
      'discountpricenetto' => null,
      'discountprice' => null,
      'vatvalue' => 23,
      'currencysymbol' => 'PLN',
      '#description' => '',
      '#longdescription' => '',
      '#shortdescription' => '',
      'category' => array(
          'photo' => '1.png',
          'name' => 'test3',
      ),
      'staticattributes' => array(
          'attributegroup' => array(
              1 => array(
                  '@name' => 'attributes group',
                  'attribute' => array(
                      0 => array(
                          'name' => 'second',
                          'description' => 'desc2',
                          'file' => '',
                      ),
                      1 => 
                        array(
                          'name' => 'third',
                          'description' => 'desc3',
                          'file' => '',
                      ),
                  )
              )
          )
      ),
      'attributes' => array(),
      'photos' => array(
          'photo' => array(
              0 => array(
                  '@mainphoto' => '1',
                  '%' => '1.png',
              ),
              1 => array(
                  '@mainphoto' => '0',
                  '%' => '2.png',
              ),
              2 => array(
                  '@mainphoto' => '0',
                  '%' => '3.png',
              )
          )
      )
));

OUTPUT (XML data):

<?xml version="1.0" encoding="UTF-8"?>
<data>
    <product id="8">
        <description><![CDATA[]]></description>
        <longdescription><![CDATA[]]></longdescription>
        <shortdescription><![CDATA[]]></shortdescription>
        <name>some string</name>
        <seo>some-string</seo>
        <ean></ean>
        <producer>
            <name></name>
            <photo>1.png</photo>
        </producer>
        <stock>123</stock>
        <trackstock>0</trackstock>
        <new>0</new>
        <pricewithoutvat>1111</pricewithoutvat>
        <price>1366.53</price>
        <discountpricenetto></discountpricenetto>
        <discountprice></discountprice>
        <vatvalue>23</vatvalue>
        <currencysymbol>PLN</currencysymbol>
        <category>
            <photo>1.png</photo>
            <name>test3</name>
        </category>
        <staticattributes>
            <attributegroup name="attributes group">
                <attribute>
                    <name>second</name>
                        <description><p>desc2</p></description>
                    <file></file>
                </attribute>
                <attribute>
                    <name>third</name>
                        <description><p>desc3</p></description>
                    <file></file>
                </attribute>
            </attributegroup>
        </staticattributes>
        <photos>
            <photo mainphoto="1">1.png</photo>
            <photo mainphoto="0">2.png</photo>
            <photo mainphoto="0">3.png</photo>
        </photos>
    </product>
</data>