Where art thou php.ini?

PHP by default only allows uploads of files of 2mb, and Moodle doesn't even work unless max_input_vars is set to at least 5000 in php.ini...
Well, where on the server is this "php.ini" file?
Actually, there are a couple of them. They're all pretty similar, but in slightly different locations depending on whether you are using FPM or the Apache Handler (libapache2-mod-php). Oh, and don't forget that the CLI php.ini also needs a little love too.
After talking about the locations of the php.ini files, I have the (not so great) idea of pointing out where the php-fpm pool configuration file is located and briefly touch on a rather complex (and perhaps somewhat controversial?) topic.

[@mossaabhajelsiddig5363]

That is perfect, I am waiting for pool video, but please explain the pool concept and what they do and why it is important before going to settings

[@Wise-Cat]

Sure, I'll try to get onto that video soon. Thanks!

[@nestrod4843]

Thanks for this video, Do you know what is happening if in Server-> php info the page just go blank, I can't see any information?

[@Wise-Cat]

If the page is just blank white, that's usually a sign that the PHP of the page crashed (i.e. there was an irrecoverable or "fatal" error. Check the webserver and/or phpfpm logs for more clues as to what went wrong. Moodles PHP.info page is fairly robust (and simple) so if it is crashing, there may be a problem with the theme you're using or maybe a block? Perhaps try switch to boost theme and see if you get the same result.

[@nestrod4843]

Thanks for your reply, I’ll check your suggestions but I’m using boost theme.