Hanisch-IT / kraken-api

example/20_TradeVolume.php

<?php
require_once(__DIR__ . '/../vendor/autoload.php');

try {
    $api = new \HanischIt\KrakenApi\KrakenApi(
        "Your-API-Key",
        "Your-API-Sign"
    );

    $tradeVolume = $api->getTradeVolume('paid');

    echo "Currency:" . $tradeVolume->getCurrency() . "\n";

The method getCurrency() does not exist on HanischIt\KrakenApi\Model\ResponseInterface. It seems like you code against a sub-type of HanischIt\KrakenApi\Model\ResponseInterface such as HanischIt\KrakenApi\Call\TradeVolume\TradeVolumeResponse.

    echo "Volume:" . $tradeVolume->getVolume() . "\n";

The method getVolume() does not exist on HanischIt\KrakenApi\Model\ResponseInterface. It seems like you code against a sub-type of HanischIt\KrakenApi\Model\ResponseInterface such as HanischIt\KrakenApi\Call\TradeVolume\TradeVolumeResponse or HanischIt\KrakenApi\Call\GetTicker\TickerResponse.

} catch (Exception $e) {
    echo $e->getMessage();
}