Hello kuihou,
Thank you for your question on getting a php.ini folder added to your account. The best way is to set or change your php version in the cPanel. When you do, it will add a php.ini in your public_html folder for you. If you are already set for the php version you need, change it and then change it back. This way it will write the proper php.ini in your account for you.
Kindest Regards,
Scott M