Installation Issue - v3.5.0 - "PHP Warning: Undefined array key"

[MichaelB]

Hey all,

I am attempting to install NagiosQL version 3.5.0 on Ubuntu 24.04. I can get to the installation web page, fulfill all the requirements, enter the requested information, and when I click "Next" I am given an Apache 500 Error.

This is the error in the Apache2 error log:

PHP Warning: Undefined array key "MySQLi" in /opt/nagiosql/install/step1.php on line 207, referer: http://10.64.25.91/nagiosql/install/install.php

I have not altered the /opt/nagiosql/install/step1.php file in any way.

Any help is appreciated!

[Martin]

Hello

The root cause of this message is the lack of the PHP mysqli module. If this module is missing, the installer is looking for the module manual URL inside an array called "$arrSourceURLs" - the result should be:
https://php.net/manual/de/book.mysqli.php
but the key definition is wrong inside the array of the 3.5.0 code because of a typo (MySQL insteed of MySQLi).

Just install the MySQLi Module on your machine and the error should no longer appear.

Martin

[MichaelB]

Thanks for the reply Martin!

I have the module installed.

root@nagios-new:/home/linux-admin# apt-get install php-mysqli
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'php8.3-mysql' instead of 'php-mysqli'
php8.3-mysql is already the newest version (8.3.6-0ubuntu0.24.04.1).
0 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.
root@nagios-new:/home/linux-admin# php -m | grep mysqli
mysqli

Not sure what the issue is.

[MichaelB]

Forgive me, I am a lowly Network Engineer. We have QL running on an old Centos server and are migrating to Ubuntu due to EOL on Centos. I have the Module installed and see the same issue. Sorry if I am misreading your solution.