ksugihara

try {
        //create instance of the complex types classes
        $currencytype = new CurrencyType();
        $currencytype->code = 'USD';
        $currencytype->amount = '100';

        $currency = new CurrencyList();
        $currency->currency = $currencytype;

        $currencycode = new CurrencyCodeList();
        $currencycode->currencyCode = 'JPY';

        $xrequestEnvelope = new RequestEnvelope();

        //Creating instance of the PreapprovalRequest to be the payload for the Preapproval api call with required field
        $params = new ConvertCurrencyRequest();

        $params->requestEnvelope = $xrequestEnvelope;
        $params->baseAmountList = $currency;
        $params->convertToCurrencyList = $currencycode;


//API credential http headers
        $http_headers = "X-PAYPAL-SECURITY-USERID: " . $API_UserName . "\r\n" .
                    "X-PAYPAL-SECURITY-SIGNATURE: " . $API_Signature . "\r\n" .
                        "X-PAYPAL-SECURITY-PASSWORD: " . $API_Password . "\r\n" .
                        "X-PAYPAL-APPLICATION-ID: " . $API_AppID . "\r\n" .
                        "X-PAYPAL-MESSAGE-PROTOCOL: " .$API_MessageProtocol. "\r\n";


$opts = array( 'http' => array('method'=>'POST','header'=>$http_headers));