Function for Currency Conversion PHP

function currencyConvert($from, $to, $amount) {
    $url = "http://www.google.com/finance/converter?a=$amount&from=$from&to=$to";
    $request = curl_init();
    $timeOut = 0;
    curl_setopt($request, CURLOPT_URL, $url);
    curl_setopt($request, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($request, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
    curl_setopt($request, CURLOPT_CONNECTTIMEOUT, $timeOut);
    $response = curl_exec($request);
    curl_close($request);
    return $response;
}