There are certain scenarios in which you may need to make changes to your PHP configuration. Specifically, you may need to edit a file on your server called php.ini, and to increase the post_max_size limit.
While we do not allow global changes to the PHP.ini configurations on our servers , per account PHP configuration changes can be made from cPanel by following these steps:
2) Look for the SOFTWARE section and click on Select PHP version
3) In the new window click on the Options button
4) Here you can locate the post_max_size and enter the value that you require.
Check your script, plugin, or theme’s documentation (or an on-screen error message) to find the correct value.
5) Once you’ll do any change, please do a left-hand side click anywhere outside the dropdown or text input box. If the change was successful, you will see a green box with a message which will confirm that the change has been applied.