From 123409143e62847bd8c2d9a874c2b6c2ed3189b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9as=20Lundgren?= <andreas.lundgren@halle.se>
Date: Fri, 20 Jan 2023 15:26:29 +0100
Subject: [PATCH] fix: catching empty arrays due to loose comparison

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

diff --git a/src/Validator.php b/src/Validator.php
index e7efac4..0bdc3ae 100644
--- a/src/Validator.php
+++ b/src/Validator.php
@@ -43,7 +43,7 @@ public static function validateMinMaxTol($begin, $end, $tol) {
     }
 
     public static function validateWidths($widths) {
-        if ($widths == NULL) {
+        if (is_null($widths)) {
             throw new \InvalidArgumentException("`widths` array cannot be `null`");
         }