Unable to setup a PHP variable "max_input_vars"

Question

I'm trying to install the moodle cms on debian12 and php8.2.

I have followed the official guide.

I'm trying to set the variable max_input_vars to the value of 5000 editing the system php.ini file at the path /etc/php/apache2/php.ini but both the OS and moodle read the default value of 1000.

I checked that i'm using the right ini file using the phpinfo function I rebooted apache service after editing the php.ini file I checked typos and if the line was duplicated or commented out

Neither moodle nor the OS do recognize the changes i made.

Any idea on how i can let moodle or the system read mine value and no the default one? Thanks

Neither moodle nor the OS do recognize the changes i made....what actual issue is occurring then? Can you provide a minimal reproducible example of the issue, and any error messages etc? Please edit your question. See also How to Ask — ADyson
– ADyson, Commented Mar 28 at 17:12
“I checked that i'm using the right ini file using the phpinfo" - can you be more specific about how you tested this? For instance, if you tested on the CLI, that might have been a different SAPI. — Chris Haas
– Chris Haas, Commented Mar 29 at 12:04
How are you editing the file and have you verified that your changes were saved? — Tyrsson
– Tyrsson, Commented Apr 13 at 3:25

Russell England · Accepted Answer · 2025-07-10 14:38:36Z

1

Check you are editing the correct php.ini file. There might be multiple instances.

Create a file called info.php and add the following

<?php phpinfo(); ?>

Then in your web browser to go http://yourmoodlesite/info.php

Search on the page for "Loaded Configuration File" - which will show the php.ini file that is being used

eg: etc/php/8.2/apache2/php.ini

You can also check on the same page for the value of max_input_vars

answered Jul 10 at 14:38

Russell England

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