From 13f76acef5362d15c71ae1ac6350cc3df5e25e43 Mon Sep 17 00:00:00 2001
From: trin4ik <trin4ik@gmail.com>
Date: Sat, 24 Dec 2022 16:43:51 +0300
Subject: [PATCH] fix deprecated `passing null as string type` (#204)

---
 src/ArrayToXml.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ArrayToXml.php b/src/ArrayToXml.php
index 1c6260d..e08a150 100644
--- a/src/ArrayToXml.php
+++ b/src/ArrayToXml.php
@@ -241,7 +241,7 @@ protected function isArrayAllKeySequential(array | string | null $value): bool
     protected function addAttributes(DOMElement $element, array $data): void
     {
         foreach ($data as $attrKey => $attrVal) {
-            $element->setAttribute($attrKey, $attrVal);
+            $element->setAttribute($attrKey, $attrVal ?? '');
         }
     }