public function getCVVCode()
    {
        if (isset($this->data->transactionResponse[0]->cvvResultCode)) {
            return (string)$this->data->transactionResponse[0]->cvvResultCode;
        } else {
            return '';
        }
    }
public function getCVVCode()
    {
        if (isset($this->data->transactionResponse[0]->cvvResultCode)) {
            return (string)$this->data->transactionResponse[0]->cvvResultCode;
        } else {
            return '';
        }
    }
public function getCVVCode ( ) { if ( isset ( $ this -> data -> transactionResponse [ 0 ] -> cvvResultCode ) ) { return ( string ) $ this -> data -> transactionResponse [ 0 ] -> cvvResultCode ; } else { return '' ; } }
Returns the Card Code Verfication return code.

@return string A single character. Can be M, N, P, S, or U.
Returns the Card Code Verfication return code .