In command window type

php --ini 

It will show you the path something like

Configuration File (php.ini) Path: /usr/local/lib Loaded Configuration File: /usr/local/lib/php.ini 

If the above command does not work then use this

echo phpinfo(); 

In a command window, type

php --ini 

It will show you the path something like:

Configuration File (php.ini) Path: /usr/local/lib Loaded Configuration File: /usr/local/lib/php.ini 

If the above command does not work then use this:

echo phpinfo();