If you would like to load your local php.ini file recursively for all your subfolders, you just need to add the following line to your .htaccess file inside the folder where you would like to apply the recursion:
SuPHP_ConfigPath /home/username/public_html/php.ini
The above assumes that you are going to replace "username" with your actual cPanel username and that your php.ini file lives inside of public_html.