That is the PHP extenstion APC, you can find it in PEAR / PECL. I removed it for you:
<?
// Create a context with the timeout set to 10 seconds
$cnx = stream_context_create(array('http' => array('timeout' => 10)));
if ($str = @file_get_contents('http://www.isksense.com/renderer/220', 0, $cnx)) {
$out = preg_replace('/\<style (.*)\<\/style\>/is', '',
preg_replace('/document\.write\(\'(.*)\'\);/i', '\1',
str_replace('\\\'', '\'', $str)));
} else {
$out = 'error';
}
$xml = new DOMDocument('1.0', 'utf-8');
$content = $xml->createElement('content', $out);
$xml->appendChild($content);
header('Content-type: text/xml');
noCacheHeaders();
echo '<?xml version="1.0" encoding="utf-8"?>
',
$xml->saveXML($xml->documentElement);
?>