update

common/business/ExchangeBusiness.php

@@ -55,7 +55,7 @@ class ExchangeBusiness
         if (!$f) {
             //所有交易所都不能直接获取交易对的行情就通过BTC去转换
             //获取BTC_USD
-            $btc_usd = ExchangeFactory::createExchange(self::$exchanges[0])->getTicker('btc');
+            $btc_usd = ExchangeFactory::createExchange(self::$exchanges[1])->getTicker('btc');
             foreach (self::$exchanges as $exchange) {
                 /**
                  * @var $exchange \common\service\exchange\Exchange