In order to develop and run PHP Web pages three vital components need to be installed on your computer system.
- Web Server - PHP will work with virtually all Web Server software, including Microsoft's Internet Information Server (IIS) but then most often used is freely availble Apache Server. Download Apache for free here: http://httpd.apache.org/download.cgi
- Database - PHP will work with virtually all database software, including Oracle and Sybase but most commonly used is freely available MySQL database.

