Different hosts use different schemes for storing and accessing files and so you'll need to research where your php.ini file.
This tutorial will show you how to find the location of the file on any server.
Step 1. Create a script to display your PHP information
You'll need to create a very simple php script and place it in your home directory. Using a script editor or a plain text editor (not a word processor) create file called phpinfo.php with this code:
<?php phpinfo(); ?>
That's all you need. Just one single line. Save the file and call it phpinfo.php.
Upload this file to the public_html directory or whatever your main HTML directory is called.
In your browser address bar, access the file by typing in: https://yourdomain.com/phpinfo.php
You'll get a complete list of all your php settings. In the phpinfo.php page you can see:
- the PHP version at the top of the file.
- the location of your php.ini file
If you scroll down the page, and you can find the current version of MySQL. and php settings like safe_mode and register_globals and much much more.
This will work on your local computer using XAMPP or WAMP as well. This is what my XAMPP installation looks like.