How to get XML data from URL in PHP?

Get XML data from URL in PHP

function get_xml_from_url($url){

  $ch = curl_init();

  curl_setopt($ch, CURLOPT_URL, $url);

  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

  curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13');

  $xmlstr = curl_exec($ch);

  curl_close($ch);

  return $xmlstr;

}