From 5b8b5a95c7e7736ff7553caa4745248a86ef59f2 Mon Sep 17 00:00:00 2001
From: Remi Collet <remi@remirepo.net>
Date: Fri, 30 Jul 2021 13:04:28 +0200
Subject: [PATCH] fix Regression in RoyalMail

---
 src/Barcode/Royalmail.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Barcode/Royalmail.php b/src/Barcode/Royalmail.php
index 211f9cbc..8d5cd5dc 100644
--- a/src/Barcode/Royalmail.php
+++ b/src/Barcode/Royalmail.php
@@ -124,7 +124,8 @@ protected function royalmail($value)
         $rowchkvalue = array_keys($this->rows, $rowvalue);
         $colchkvalue = array_keys($this->columns, $colvalue);
         $intersect   = array_intersect($rowchkvalue, $colchkvalue);
-        $chkvalue    = current($intersect);
+        $chkvalue    = (string)current($intersect);
+
         if ($chkvalue === $checksum) {
             return true;
         }