Bitcoin price in Header

[Freinon]

Hello
I want to show data from JsonFeed in the Header, but can't make it work.
The code what I put in the Header file:

<?
function GetJsonFeed($json_url)
{
$feed = file_get_contents($json_url);
return json_decode($feed, true);
}
$LTC_BTC = GetJsonFeed("https://btc-e.com/api/2/ltc_btc/ticker");
$LTC_BTC_HIGH = $LTC_BTC["ticker"]["high"];
$LTC_BTC_LOW = $LTC_BTC["ticker"]["low"];
$LTC_BTC_AVG = $LTC_BTC["ticker"]["avg"];
$LTC_BTC_VOL = $LTC_BTC["ticker"]["vol"];
$LTC_BTC_VOL_CUR = $LTC_BTC["ticker"]["vol_cur"];
$LTC_BTC_LAST = $LTC_BTC["ticker"]["last"];
$LTC_BTC_BUY = $LTC_BTC["ticker"]["buy"];
$LTC_BTC_SELL = $LTC_BTC["ticker"]["sell"];
$LTC_USD = GetJsonFeed("https://btc-e.com/api/2/ltc_usd/ticker");
$LTC_USD_HIGH = $LTC_USD["ticker"]["high"];
$LTC_USD_LOW = $LTC_USD["ticker"]["low"];
$LTC_USD_AVG = $LTC_USD["ticker"]["avg"];
$LTC_USD_VOL = $LTC_USD["ticker"]["vol"];
$LTC_USD_VOL_CUR = $LTC_USD["ticker"]["vol_cur"];
$LTC_USD_LAST = $LTC_USD["ticker"]["last"];
$LTC_USD_BUY = $LTC_USD["ticker"]["buy"];
$LTC_USD_SELL = $LTC_USD["ticker"]["sell"];
$BTC_USD = GetJsonFeed("https://btc-e.com/api/2/btc_usd/ticker");
$BTC_USD_HIGH = $BTC_USD["ticker"]["high"];
$BTC_USD_LOW = $BTC_USD["ticker"]["low"];
$BTC_USD_AVG = $BTC_USD["ticker"]["avg"];
$BTC_USD_VOL = $BTC_USD["ticker"]["vol"];
$BTC_USD_VOL_CUR = $BTC_USD["ticker"]["vol_cur"];
$BTC_USD_LAST = $BTC_USD["ticker"]["last"];
$BTC_USD_BUY = $BTC_USD["ticker"]["buy"];
$BTC_USD_SELL = $BTC_USD["ticker"]["sell"];
<br>HEADER
print "BTC:".$BTC_USD_LAST.", LTC:".$LTC_USD_LAST.", ".$LTC_BTC_LAST."LTC/BTC";
?>

As I know, it's not allowed to put php in templates, but then how to make it?
Thank you