[PHP-INST] Why no one answers this?

[Panos Katergiathis]

Hello

I am new to installing PHP, yet i am a guy who likes to read. Despite 5 books, no one 
explains to me this:

Suppose i have installed Apache and PHP duting the standard installation of a Linux 
distribution (Suse, Redhat...). What do i do if i want to upgrade to a newer PHP 
version when it becomes available?

Please assist.

Panos