From db31822a3ff6869b21321fc1981ce46b7ee7f4dd Mon Sep 17 00:00:00 2001
From: Joshua Ramon Enslin <joshua@museum-digital.de>
Date: Fri, 10 Nov 2023 16:17:20 +0100
Subject: [PATCH] Use empty() over === false to also return error in case of
 empty strings

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

diff --git a/src/MD_STD_IN.php b/src/MD_STD_IN.php
index fe7b4e6..16b08b5 100644
--- a/src/MD_STD_IN.php
+++ b/src/MD_STD_IN.php
@@ -96,7 +96,7 @@ final class MD_STD_IN {
      */
     public static function sanitize_rgb_color(mixed $input):string {
 
-        if (($output = \filter_var($input, FILTER_UNSAFE_RAW, FILTER_FLAG_STRIP_LOW | FILTER_FLAG_STRIP_HIGH)) === false) {
+        if (empty($output = \filter_var($input, FILTER_UNSAFE_RAW, FILTER_FLAG_STRIP_LOW | FILTER_FLAG_STRIP_HIGH))) {
             throw new MDInvalidColorCode("Invalid color code provided: " . $output);
         }