From 0af0cd83382bbb70fa2f033fdc96ad8a4b3888d0 Mon Sep 17 00:00:00 2001
From: Koen Eelen <koen@becode.org>
Date: Fri, 14 Aug 2020 11:41:52 +0200
Subject: [PATCH] BUGFIX substr() broke when passing a NULL because of strict
 type in case mb mod not installed

---
 src/Monolog/Utils.php | 2 +-
 test.php              | 0
 2 files changed, 1 insertion(+), 1 deletion(-)
 create mode 100644 test.php

diff --git a/src/Monolog/Utils.php b/src/Monolog/Utils.php
index 007ad686..7515eadb 100644
--- a/src/Monolog/Utils.php
+++ b/src/Monolog/Utils.php
@@ -31,7 +31,7 @@ final class Utils
             return mb_strcut($string, $start, $length);
         }
 
-        return substr($string, $start, $length);
+        return substr($string, $start, $length ?: strlen($string));
     }
 
     /**
diff --git a/test.php b/test.php
new file mode 100644
index 00000000..e69de29b