Location php.ini file
Well it depends on the Linux distribution you are using, the version of php and the way you install it with Apache web server. Php.ini may be here:
/etc/php.ini
Or here:
/etc/php/php.ini
/etc/php5/php.ini
Or here:
/usr/bin/php5/bin/php.ini
Anyway, you can always find any file named php.ini in this manner
find / -name php.ini
The simplest yet most powerful usage of the renowned find command. By its help I was able to locate the php.ini on my Ubuntu 9.04 Apache2 and PHP5:
/etc/php5/apache2/php.ini
