Phpinfo() function is commonly used to check the current state of PHP configuration. It can also be used for debugging purposes as it contains all EGPCS (Environment, GET, POST, Cookie, Server) data. 

   To run the function, follow the steps below: 

1. Log into your cPanel account, go to section Files >> File Manager menu 



2. Navigate to public_html directory, click on New File and create phpinfo.php file 



3. Find the newly created file in the list and click on Code Editor



4. Add the lines of the code provided below to the file and click on Save Changes

                      <?php
                      phpinfo();
                      ?>



5. To see the detailed information about PHP configuration of your account, just open 
http://yourdomain.com/phpinfo.php link in your browser, replacing yourdomain.com with your main domain name. 

NOTE: do not forget to delete the file once you check all the necessary information, for security reasons.