Конвертация валюты по текущему курсу ЦБР

public function __construct($date = null)
{
if (!isset($date)) $date = date("Y-m-d");
$client = new SoapClient("http://www.cbr.ru/DailyInfoWebServ/DailyInfo.asmx?WSDL");



$curs = $client->GetCursOnDate(array("On_date" => $date));
$rates = new SimpleXMLElement($curs->GetCursOnDateResult->any);

foreach ($rates->ValuteData->ValuteCursOnDate as $rate)
{
$r = (float)$rate->Vcurs / (int)$rate->Vnom;
$this->rates['byChCode'][(string)$rate->VchCode] = $r;
$this->rates['byCode'][(int)$rate->Vcode] = $r;
}

// Adding an exchange rate of Russian Ruble
$this->rates['byChCode']['RUB'] = 1;
$this->rates['byCode'][643] = 1;
}


public function GetRate($code)
{
if (is_string($code))
{
$code = strtoupper(trim($code));
return (isset($this->rates['byChCode'][$code])) ? $this->rates['byChCode'][$code] : false;

}
elseif (is_numeric($code))
{
return (isset($this->rates['byCode'][$code])) ? $this->rates['byCode'][$code] : false;
}
else
{
return false;
}
}


public function GetCrossRate($CurCodeToSell, $CurCodeToBuy)
{
$CurToSellRate = $this->GetRate($CurCodeToSell);
$CurToBuyRate = $this->GetRate($CurCodeToBuy);

if ($CurToSellRate && $CurToBuyRate)
{
return $CurToBuyRate / $CurToSellRate;
}
else
{
return false;
}

}


public function GetRates()
{
return $this->rates;
}
}

$rates = new ExchangeRatesCBRF();
$course = $rates->GetRate("USD"); /*Например, будет 62.1223*/

/*КУРС ЦБР*/