feat：复制实例

@@ -96,6 +96,19 @@ class CmBroker
         }
         $this->init();
     }
+    //复制一个新的实例
+    public function copy()
+    {
+        $apiInfo = new ApiInfo($this->apiInfo->key, $this->apiInfo->secret, $this->apiInfo->passphrase);
+        $cmBroker = new CmBroker($this->plat, $apiInfo);
+        $cmBroker->symbolInfos = $this->symbolInfos;
+        $cmBroker->positions = $this->positions;
+        $cmBroker->name = $this->name;
+        $cmBroker->levers = $this->levers;
+        $cmBroker->uid = $this->uid;
+        $cmBroker->posMode = $this->posMode;
+        return $cmBroker;
+    }
     public function setName($name)
     {
         $this->name = $name;