Dude, where is my php.ini file ?!

Just log into your server via SSH and run:

php -i |grep php.ini

Alternatively you can create a new php file and use the following:

<? phpinfo();?>

Open this file in your browser and you will be able to find your php.ini file.

With WHM / cPanel based servers your php.ini file will be at /usr/local/lib/php.ini. Your edits to this file will not be overwritten.