Get XML feed data

$file = "http://xml.altinkaynak.com/doviz.xml";

function startElement($parser, $name, $attrs)
{
global $ShwText;
if($name == 'DOVIZ') $ShwText .= "";
}

function endElement($parser, $name)
{
global $ShwText;
if($name == 'DOVIZ') $ShwText .= "";
}

function characterData($parser, $data)
{
global $ShwText;
if($data != '') $ShwText .= "".$data."";
}

$ShwText = "";

$xml_parser = xml_parser_create();
xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, true);
xml_set_element_handler($xml_parser, "startElement", "endElement");
xml_set_character_data_handler($xml_parser, "characterData");
if (!($fp = fopen($file, "r")))
{
die("AltınKaynak XML yüklenemedi. ");
$ShwText = "";
}

while ($data = fread($fp, 4096)) {
if (!xml_parse($xml_parser, $data, feof($fp))) {
die(sprintf("XML Yüklenme hatası : %s at line %d",
xml_error_string(xml_get_error_code($xml_parser)),
xml_get_current_line_number($xml_parser)));
}
}
xml_parser_free($xml_parser);
if( $ShwText != '') $ShwText .= "";
echo $ShwText;