From 52ecf12fd9c281c7eb68ea9d6d37bb239100cc23 Mon Sep 17 00:00:00 2001
From: flashwave <me@flash.moe>
Date: Sun, 16 Sep 2018 02:45:27 +0200
Subject: [PATCH] Added character check to colour_from_hex.

---
 src/colour.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/colour.php b/src/colour.php
index 536d1d12..e83b7d08 100644
--- a/src/colour.php
+++ b/src/colour.php
@@ -126,6 +126,10 @@ function colour_from_hex(int &$colour, string $hex): bool
         return false;
     }
 
+    if (!ctype_xdigit($hex)) {
+        return false;
+    }
+
     colour_from_rgb(
         $colour,
         hexdec(mb_substr($hex, 0, 2)),