feat:增加k线数据获取

@@ -287,4 +287,25 @@ class CmBroker
         }
         return -1;
     }
+    /**
+     * 获取k线数据
+     * @param string $symbol 交易对
+     * @param string $peroid 周期
+     * @param int $limit 限制数量
+     * @return Kline[] 返回K线数组
+     */
+    public function getKlines($symbol, $peroid, $limit = 100)
+    {
+        $symbolOri = $this->getSymbolOri($symbol, $this->plat);
+        if ($this->plat == 'okx') {
+            $klines = $this->exBroker->getKlines($symbolOri, $peroid, $limit);
+            $newKlines = [];
+            foreach ($klines as $key => $value) {
+                $kline = Kline::transferOkx($value);
+                $newKlines[] = $kline;
+            }
+            return $newKlines;
+        }
+        return [];
+    }
 }

@@ -54,6 +54,13 @@ class Api
         return $this->request($path, $method, $param);
     }
 
+    //获取k线
+    public function klines($param)
+    {
+        $path = "/api/v5/market/index-candles";
+        $method = 'GET';
+        return $this->request($path, $method, $param);
+    }
 
     //-----------private interface ------------
     // 查询杠杆

@@ -348,4 +348,22 @@ class ExBroker
         }
         return -1;
     }
+    //获取k线
+    public function getKlines($symbol, $period, $limit = "", $startTs = "", $endTs = "")
+    {
+        $param = [
+            'instId' => $symbol,
+            'bar' => $period,
+        ];
+        if ($limit) {
+            $param['limit'] = $limit;
+        }
+        if ($startTs) {
+            $param['after'] = $startTs;
+        }
+        if ($endTs) {
+            $param['before'] = $endTs;
+        }
+        return $this->api->klines($param);
+    }
 }

@@ -41,8 +41,13 @@ class Kline
         $high = $data[2];
         $low = $data[3];
         $close = $data[4];
-        $vol = $data[6];
-        $volQuote = $data[7];
+        if (count($data) > 6) {
+            $vol = $data[6];
+            $volQuote = $data[7];
+        } else {
+            $vol = 0;
+            $volQuote = 0;
+        }
         return new Kline($time, $open, $high, $low, $close, $vol, $volQuote);
     }
 }