Fix JSON float formatting (#1635)

Preserve zero fraction while JSON serialization

Author: pySilver

CHANGELOG.md

@@ -10,6 +10,7 @@ All notable changes to this project will be documented in this file based on the
 ### Bugfixes
 * Always set the Guzzle `base_uri` to support connecting to multiple ES hosts. [#1618](https://github.com/ruflin/Elastica/pull/1618)
 * Properly handle underscore prefixes in options and bulk request metadata ([cf upstream](https://github.com/elastic/elasticsearch/issues/26886). [#1621](https://github.com/ruflin/Elastica/pull/1621)
+* Preserve zeros while doing float serialization to JSON. [#1635](https://github.com/ruflin/Elastica/pull/1635)
 
 ### Added
 

lib/Elastica/Index/Settings.php

@@ -204,7 +204,7 @@ public function setBlocksRead(bool $state = true): Response
     /**
      * @return bool
      */
-    public function getBlocksWrite(): Bool
+    public function getBlocksWrite(): bool
     {
         return $this->getBool('blocks.write');
     }

lib/Elastica/JSON.php

@@ -60,6 +60,9 @@ public static function stringify($args/* inherit from json_encode */)
         // extract arguments
         $args = \func_get_args();
 
+        // set defaults
+        isset($args[1]) ? $args[1] |= JSON_PRESERVE_ZERO_FRACTION : $args[1] = JSON_PRESERVE_ZERO_FRACTION;
+
         // run encode and output
         $string = \call_user_func_array('json_encode', $args);