JSON from Google Finance

<?php
header('Access-Control-Allow-Origin: *');
preg_match('#<div id=currency_converter_result>.*?<span class=.*?>(.*?)\s#s', file_get_contents('https://www.google.com/finance/converter?from=' . @$_GET['from'] . '&to=' . @$_GET['to'] . '&a=' . @$_GET['q']), $res);

$to = @$_GET['to'];
$from = @$_GET['from'];
$v = @$res[1];

echo '{"to": "' . $to . '", "from": "' . $from .'", "v": ' . $v . '}';