Codeigniter通过SimpleXML将xml转换成对象的方法

class CI_ManipulateXML
{
var $xml='';
function CI_ManipulateXML($xmlcontent)
{
  $this->xml=$xmlcontent;
}
function ConvertXML() {
try {
  $xmlobject = new SimpleXMLElement($this->xml);
  if ($xmlobject == false) {
    return false;
  }
}
catch (Exception $e) {
  return false;
  }
return $xmlobject;
}
}