From ee8ca0c38c5bbda071eaca164843b9a44456049d Mon Sep 17 00:00:00 2001
From: Marcus Olsson <hello@marcusolsson.me>
Date: Tue, 17 Sep 2024 13:49:03 +0200
Subject: [PATCH] Fix passing null as string

---
 src/Httpful/Handlers/FormHandler.php | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/Httpful/Handlers/FormHandler.php b/src/Httpful/Handlers/FormHandler.php
index 0ff05a8..53a4bb7 100644
--- a/src/Httpful/Handlers/FormHandler.php
+++ b/src/Httpful/Handlers/FormHandler.php
@@ -6,7 +6,7 @@
 
 namespace Httpful\Handlers;
 
-class FormHandler extends MimeHandlerAdapter 
+class FormHandler extends MimeHandlerAdapter
 {
     /**
      * @param string $body
@@ -18,13 +18,13 @@ public function parse($body)
         parse_str($body, $parsed);
         return $parsed;
     }
-    
+
     /**
      * @param mixed $payload
      * @return string
      */
     public function serialize($payload): string
     {
-        return http_build_query($payload, null, '&');
+        return http_build_query($payload, "", '&');
     }
-}
\ No newline at end of file
+}