Look for resources only in additional array

Author: akrabat

src/ProblemDetailsResponseFactory.php

@@ -229,15 +229,15 @@ public function createResponse(
         ];
 
         if ($additional) {
+            // ensure payload can be json_encoded
+            array_walk_recursive($additional, function (&$value) {
+                if (is_resource($value)) {
+                    $value = print_r($value, true) . ' of type ' . get_resource_type($value);
+                }
+            });
             $payload = array_merge($additional, $payload);
         }
 
-        // ensure payload can be json_encoded
-        array_walk_recursive($payload, function (&$value) {
-            if (is_resource($value)) {
-                $value = print_r($value, true) . ' of type ' . get_resource_type($value);
-            }
-        });
 
         return $this->getResponseGenerator($request)($payload);
     }