"Most distro's will have a ready made option at install time to
add PHP and Apache, or they will usually have an option in your
systems package installer, unfortunately there are a number of
different systems in use here and it's not practical to try and
cover each one.
"There is however light at the end of the tunnel. Most of
today's distro's fall into either a 'Red Hat' style system or a
'Debian' style system. This means that there are 2 distinct package
management systems making it quite easy to add new software.
Unfortunately you'll have to use the command line.
"If you have a Red Hat system, then you'll use the RPM program
to manage your packages, from your distro's desktop find the option
to launch a 'Konsole' (KDE) or an 'XTerminal' or something similar.
The option your looking for may be labelled 'Shell' or 'Command