Hello, I would like to ask you if it is possible to know where php.ini ubuntu I thank you for informing me quickly enough.
The three files you have there are each meant for different uses.
/etc/php/5.6/cli/php.ini is for the CLI PHP program, which you found by running php on the terminal.
/etc/php/5.6/cgi/php.ini is for the php-cgi system which isn't specifically used in this setup.