XML : How to get 2 CDATA value from XML which is in

I am using codeigniter framework, I have a xml file with below code:

  <rss xmlns:content="" xmlns:wfw="" xmlns:dc="" xmlns:atom="" xmlns:sy="" xmlns:slash="" version="2.0">      <channel>          <item>              <title>Title1</title>              <link>Link</link>              <pubDate>Date</pubDate>              <content:encoded>                  <![CDATA[ This is description 1 ]]>                  <![CDATA[ This is description 2 ]]>              </content:encoded>          </item>            <item>              <title>Title2</title>              <link>Link2</link>              <pubDate>Date2</pubDate>              <content:encoded>                  <![CDATA[ This is description 3 ]]>                  <![CDATA[ This is description 4 ]]>              </content:encoded>          </item>  </channel>  </rss>    

I tried this to parse the xml:

  <?php  function test()  {      $xml = simplexml_load_file('http://localhost/testxml/testxml.xml','SimpleXMLElement',LIBXML_NOCDATA);      echo "<pre>";      print_r($xml);      echo "</pre>";  }  ?>    

It is giving me output without the CDATA which is exists in this tag content:encoded:

  SimpleXMLElement Object  (      [@attributes] => Array          (              [version] => 2.0          )        [channel] => SimpleXMLElement Object          (              [item] => Array                  (                      [0] => SimpleXMLElement Object                          (                              [title] => Title1                              [link] => Link                              [pubDate] => Date                          )                        [1] => SimpleXMLElement Object                          (                              [title] => Title2                              [link] => Link2                              [pubDate] => Date2                          )                    )            )    )    

How can I get <content:encoded><![CDATA[ This is description 1 ]]><![CDATA[ This is description 2 ]]></content:encoded> this data in parsing?