how to install apache, PHP and MySQL on Linux 2

how to install apache, PHP and MySQL on Linux
This tutorial explains the installation of Apache web server, bundled
with PHP and MySQL server on a Linux machine. The tutorial is primarily for SuSE
9.2, 9.3, 10.0 & 10.1, but most of the steps ought to be valid for all
Linux-like operating systems.
Contents:

MySQL 5 Installation

Apache 2 Installation
Prerequisites

Download Source

Unpack, Configure, Compile
Edit httpd.conf

Set up Access Privileges
Start and Stop Apache Server

Automatic Startup
PHP 5 Installation

apache 2 installation
prerequisites
Before you begin, it is highly recommended (though not inevitable) to create
a system user and user group under which your Apache server will be
running.
# groupadd www
# useradd -g www apache2
What is it good for? All actions performed by Apache (for instance your PHP
scripts execution) will be restricted by this user's privileges. Thus you can
explicitly rule which directories your PHP scripts may read or change. Also all
files created by Apache (e.g. as a result of executing your PHP scripts) will be
owned by this user (apache2 in my case), and affiliated with this user group
(www in my case).
download source
Get the source from http://httpd.apache.org/download.cgi

( httpd-2.2.4.tar.gz
). These instructions are known
to work with all 2.x.x Apache versions.
unpack, configure, compile
Go to the directory with the downloaded file and enter:
# tar -xzf
httpd-2.2.4.tar.gz
# cd httpd-2.2.4
# ./configure
--prefix=/usr/local/apache2 --enable-so --with-included-apr
The configure options deserve a little bit more of detail here. The most
important --prefix
option specifies the location
where Apache is to be installed. Another commonly used option --enable-so
turns on the DSO
support, i.e. available modules
compiled as shared objects can be loaded or unloaded at runtime. Very handy.
To compile some modules statically (they are