From 8ad06daf2bd77ff30e48017d7e6c12861925eace Mon Sep 17 00:00:00 2001
From: Andreas <6977712+AndreasK79@users.noreply.github.com>
Date: Fri, 10 Feb 2023 09:45:19 +0100
Subject: [PATCH] [PHP 8.1] Fix for passing null to parameter

---
 application/models/Logbook_model.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/application/models/Logbook_model.php b/application/models/Logbook_model.php
index 5757b59a..ac73805d 100755
--- a/application/models/Logbook_model.php
+++ b/application/models/Logbook_model.php
@@ -175,8 +175,8 @@ class Logbook_model extends CI_Model {
             'COL_TX_PWR' => $tx_power,
             'COL_STX' => $stx,
             'COL_SRX' => $srx,
-            'COL_STX_STRING' => strtoupper(trim($stx_string)),
-            'COL_SRX_STRING' => strtoupper(trim($srx_string)),
+            'COL_STX_STRING' => $stx_string == null ? '' : strtoupper(trim($stx_string)),
+            'COL_SRX_STRING' => $srx_string == null ? '' : strtoupper(trim($srx_string)),
             'COL_CONTEST_ID' => $contestid,
             'COL_NR_BURSTS' => null,
             'COL_NR_PINGS' => null,