http://php.ph and http://www.php.ph are considered as different websites by search engines. This causes a potential for duplicate content problem. To solve this, you should make your domain accessible via one-way, either www or non-www version.
Make is the automatic project building facility.
eAccelerator is a free open-source PHP accelerator, optimizer, and dynamic content cache. It typically reduces server load and increases the speed of your PHP code by 1-10 times.
Webmin is a web-based interface for system administration for Unix. Using any modern web browser, you can setup user accounts, Apache, DNS, file sharing and much more.
Take a look at the PHP Everywhere! pics here.