Merge branch 'feature/ticker' into 'master'

common/service/exchange/Wbf.php

@@ -59,7 +59,12 @@ class Wbf extends Exchange implements ExchangeInterface
             $data = $res['data']['ticker'];
             foreach ($data as $item) {
                 $key = $this->quotation_prefix . strtoupper($item['symbol']);
-                $this->redis->hmset($key, 'low', $item['low'], 'high', $item['high'], 'last', $item['last'], 'vol', $item['vol'], 'change', $item['change']);
+                $low = isset($item['low']) ? $item['low'] : 0;
+                $high = isset($item['high']) ? $item['high'] : 0;
+                $last = isset($item['last']) ? $item['last'] : 0;
+                $vol = isset($item['vol']) ? $item['vol'] : 0;
+                $change = isset($item['change']) ? $item['change'] : 0;
+                $this->redis->hmset($key, 'low', $low, 'high', $high, 'last', $last, 'vol', $vol, 'change', $change);
                 if (!$this->redis->sismember($this->supported_symbol, strtoupper($item['symbol']))){
                     $this->redis->sadd($this->supported_symbol, strtoupper($item['symbol']));
                 }