feat:增加费率上下限

@@ -10,8 +10,10 @@ class Premium
     public $settleTs; //下次结算时间
     public $settlePeriod; //结算周期
     public $uts; //最近更新时间
+    public $maxRate; //最大费率
+    public $minRate; //最小费率
 
-    public function __construct($symbol, $symbolOri, $rate, $settleTs, $settlePeriod, $uts)
+    public function __construct($symbol, $symbolOri, $rate, $settleTs, $settlePeriod, $uts, $maxRate, $minRate)
     {
         $this->symbol = $symbol;
         $this->symbolOri = $symbolOri;
@@ -19,6 +21,8 @@ class Premium
         $this->settleTs = $settleTs;
         $this->settlePeriod = $settlePeriod;
         $this->uts = $uts;
+        $this->maxRate = $maxRate;
+        $this->minRate = $minRate;
     }
 
     public function toArray()
@@ -40,7 +44,9 @@ class Premium
         $settleTs = $data['fundingTime'];
         $settlePeriod = $data['nextFundingTime'] - $settleTs;
         $uts = $data['ts'];
-        return new self($symbolSt, $symbolOri, $rate, $settleTs, $settlePeriod, $uts);
+        $maxRate = $data['maxFundingRate'];
+        $minRate = $data['minFundingRate'];
+        return new self($symbolSt, $symbolOri, $rate, $settleTs, $settlePeriod, $uts, $maxRate, $minRate, $maxRate, $minRate);
     }
     public static function transferBinance($data, callable $getSymbolSt): ?self
     {
@@ -54,6 +60,6 @@ class Premium
         $settleTs = $data['nextFundingTime'];
         $settlePeriod = 0;
         $uts = $data['time'];
-        return new self($symbolSt, $symbolOri, $rate, $settleTs, $settlePeriod, $uts);
+        return new self($symbolSt, $symbolOri, $rate, $settleTs, $settlePeriod, $uts, 0, 0);
     }
 }