Merge branch 'najdanovicivan-json-encode-patch'

Author: ezimuel

src/Elasticsearch/Serializers/ArrayToJSONSerializer.php

@@ -6,6 +6,11 @@
 
 use Elasticsearch\Common\Exceptions\RuntimeException;
 
+if (!defined('JSON_INVALID_UTF8_SUBSTITUTE')) {
+    //PHP < 7.2 Define it as 0 so it does nothing
+    define('JSON_INVALID_UTF8_SUBSTITUTE', 0);
+}
+
 /**
  * Class JSONSerializer
  *
@@ -25,7 +30,7 @@ public function serialize($data): string
         if (is_string($data) === true) {
             return $data;
         } else {
-            $data = json_encode($data, JSON_PRESERVE_ZERO_FRACTION);
+            $data = json_encode($data, JSON_PRESERVE_ZERO_FRACTION + JSON_INVALID_UTF8_SUBSTITUTE);
             if ($data === false) {
                 throw new RuntimeException("Failed to JSON encode: ".json_last_error());
             }

src/Elasticsearch/Serializers/EverythingToJSONSerializer.php

@@ -6,6 +6,11 @@
 
 use Elasticsearch\Common\Exceptions\RuntimeException;
 
+if (!defined('JSON_INVALID_UTF8_SUBSTITUTE')) {
+    //PHP < 7.2 Define it as 0 so it does nothing
+    define('JSON_INVALID_UTF8_SUBSTITUTE', 0);
+}
+
 /**
  * Class EverythingToJSONSerializer
  *
@@ -22,7 +27,7 @@ class EverythingToJSONSerializer implements SerializerInterface
      */
     public function serialize($data): string
     {
-        $data = json_encode($data, JSON_PRESERVE_ZERO_FRACTION);
+        $data = json_encode($data, JSON_PRESERVE_ZERO_FRACTION + JSON_INVALID_UTF8_SUBSTITUTE);
         if ($data === false) {
             throw new RuntimeException("Failed to JSON encode: ".json_last_error());
         }

src/Elasticsearch/Serializers/SmartSerializer.php

@@ -7,6 +7,11 @@
 use Elasticsearch\Common\Exceptions;
 use Elasticsearch\Common\Exceptions\Serializer\JsonErrorException;
 
+if (!defined('JSON_INVALID_UTF8_SUBSTITUTE')) {
+    //PHP < 7.2 Define it as 0 so it does nothing
+    define('JSON_INVALID_UTF8_SUBSTITUTE', 0);
+}
+
 /**
  * Class SmartSerializer
  *
@@ -26,7 +31,7 @@ public function serialize($data): string
         if (is_string($data) === true) {
             return $data;
         } else {
-            $data = json_encode($data, JSON_PRESERVE_ZERO_FRACTION);
+            $data = json_encode($data, JSON_PRESERVE_ZERO_FRACTION + JSON_INVALID_UTF8_SUBSTITUTE);
             if ($data === false) {
                 throw new Exceptions\RuntimeException("Failed to JSON encode: ".json_last_error());
             }