闪兑问题更新

api/controllers/MarketController.php

@@ -52,6 +52,12 @@ class MarketController extends BaseController
             goto doEnd;
         }
 
+        if ('USDT' == strtoupper($base_currency) && 'USDT' == strtoupper($currency)) {
+            $this->msg = 'invalid symbol';
+            $this->code = -1;
+            goto doEnd;
+        }
+
         if (false == $exchange || !in_array($exchange, Yii::$app->params['exchange'])) {
             $this->msg = 'invalid exchange';
             $this->code = -1;
@@ -71,6 +77,17 @@ class MarketController extends BaseController
             goto doEnd;
         }
 
+        if ('USDT' == strtoupper($currency)) {
+            $currency_ticker = $exchange->getTicker($base_currency, 'USDT');
+            if (empty($currency_ticker)) {
+                $this->code = -1;
+                $this->msg = '此交易所暂不支持所选币种!';
+                goto doEnd;
+            }
+            $this->data = rtrim(sprintf('%.6f', 1 / $currency_ticker['last']), '0');
+            goto doEnd;
+        }
+
         $currency_ticker = $exchange->getTicker($currency, 'USDT');
         $base_currency_ticker = $exchange->getTicker($base_currency, 'USDT');
         if (empty($currency_ticker) || empty($base_currency_ticker)) {