同步到es 改成批量

@@ -55,14 +55,16 @@ class BulkData {
      */
     public function toParams():array {
         $params = [];
-        foreach ($this->data as $index=>$item){
-            $params[] = [
-                'index' =>  [
-                    '_index'    =>  $index,
-                    '_id'   =>  $item['_id']
-                ]
-            ];
-            $params[] = $item['_source'];
+        foreach ($this->data as $index=>$items){
+            foreach ($items as $item){
+                $params[] = [
+                    'index' =>  [
+                        '_index'    =>  $index,
+                        '_id'   =>  $item['_id']
+                    ]
+                ];
+                $params[] = $item['_source'];
+            }
         }
         return $params;
     }