add JSON_PRESERVE_ZERO_FRACTION for Json_encode (#481)

* Update SmartSerializer.php

* add JSON_PRESERVE_ZERO_FRACTION for json_encode

* add JSON_PRESERVE_ZERO_FRACTION for json_encode

* add JSON_PRESERVE_ZERO_FRACTION for json_encode

* add JSON_PRESERVE_ZERO_FRACTION for json_encode

* require php version up to 5.6.6

Author: moknomo

composer.json

@@ -10,7 +10,7 @@
     }
   ],
   "require": {
-    "php": "^5.6|^7.0",
+    "php": "^5.6.6|^7.0",
     "psr/log": "~1.0",
     "guzzlehttp/ringphp" : "~1.0"
   },

src/Elasticsearch/Serializers/ArrayToJSONSerializer.php

@@ -25,7 +25,7 @@ public function serialize($data)
         if (is_string($data) === true) {
             return $data;
         } else {
-            $data = json_encode($data);
+            $data = json_encode($data, JSON_PRESERVE_ZERO_FRACTION);
             if ($data === '[]') {
                 return '{}';
             } else {

src/Elasticsearch/Serializers/EverythingToJSONSerializer.php

@@ -22,7 +22,7 @@ class EverythingToJSONSerializer implements SerializerInterface
      */
     public function serialize($data)
     {
-        $data = json_encode($data);
+        $data = json_encode($data, JSON_PRESERVE_ZERO_FRACTION);
         if ($data === '[]') {
             return '{}';
         } else {

src/Elasticsearch/Serializers/SmartSerializer.php

@@ -27,7 +27,7 @@ public function serialize($data)
         if (is_string($data) === true) {
             return $data;
         } else {
-            $data = json_encode($data);
+            $data = json_encode($data, JSON_PRESERVE_ZERO_FRACTION);
             if ($data === '[]') {
                 return '{}';
             } else {

tests/Elasticsearch/Tests/Serializers/ArrayToJSONSerializerTest.php

@@ -24,7 +24,7 @@ public function testSerializeArray()
 
         $ret = $serializer->serialize($body);
 
-        $body = json_encode($body);
+        $body = json_encode($body, JSON_PRESERVE_ZERO_FRACTION);
         $this->assertEquals($body, $ret);
     }
 

tests/Elasticsearch/Tests/Serializers/EverythingToJSONSerializerTest.php

@@ -24,7 +24,7 @@ public function testSerializeArray()
 
         $ret = $serializer->serialize($body);
 
-        $body = json_encode($body);
+        $body = json_encode($body, JSON_PRESERVE_ZERO_FRACTION);
         $this->assertEquals($body, $ret);
     }