From b8d5ba86ad9b4eb8fff03c41756f1b6079a92926 Mon Sep 17 00:00:00 2001
From: Damien Couchez <damien.couchez@gmail.com>
Date: Fri, 13 May 2022 17:00:48 +0200
Subject: [PATCH] fix(php): fix header management introduced by latest rework
 (#503)

---
 .../lib/RequestOptions/RequestOptionsFactory.php            | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/clients/algoliasearch-client-php/lib/RequestOptions/RequestOptionsFactory.php b/clients/algoliasearch-client-php/lib/RequestOptions/RequestOptionsFactory.php
index 0966b25c43..133fbae4a4 100644
--- a/clients/algoliasearch-client-php/lib/RequestOptions/RequestOptionsFactory.php
+++ b/clients/algoliasearch-client-php/lib/RequestOptions/RequestOptionsFactory.php
@@ -71,14 +71,14 @@ private function normalize($options)
                         $headersToLowerCase[mb_strtolower($key)] = $v;
                     }
 
-                    $normalized[$optionName] = $this->format(
+                    $normalized[$optionName] += $this->format(
                         $headersToLowerCase
                     );
                 } else {
-                    $normalized[$optionName] = $this->format($value);
+                    $normalized[$optionName] += $this->format($value);
                 }
             } else {
-                $normalized[$optionName] = $value;
+                $normalized[$optionName] += $value;
             }
         }