PHP Introduction

Basic Knowledge

Before you are going to start PHP you should have a basic knowledge of the following :

  • HTML
  • CSS
  • Javascript

What is PHP ?

  • PHP :: Hypertext Preprocessor
  • PHP is server side scripting language
  • PHP is open source scripting language
  • PHP is free of cost and its free to download and use.

Why PHP ?

  • PHP runs almost on all of the platform like Windows, Linux, Unix, Mac OS X, etc.,
  • PHP is compatible with most of the web servers like Apache, IIS, mongodb, etc.,
  • PHP supports wide range of Databases like MySql,Sql,PgSql,etc.,
  • We can download PHP from

Characteristics of PHP

  • Simplicity
  • Security
  • Efficiency
  • Familiarity
  • Flexibility


  • The PHP script is executed on the server, and the plain HTML result is sent back to the browser.