PHP Introduction

PHP is an extremely popular, Open Source scripting language, most commonly used on webservers to produce dynamic pages. The name "PHP" is a recursive acronym for "PHP: Hypertext Preprocessor" and was initially created by Rasmus Lerdorf in 1994. As of today, the current version of PHP is version 5, with version 6 in the making.

 PHP is a programming language that can do all sorts of things: evaluate form data sent from a browser, build custom web content to serve the browser, talk to a database, and even send and receive cookies.

 PHP

  • PHP is an acronym for "PHP: Hypertext Preprocessor" 
  • PHP is a widely-used, open source scripting language 
  • PHP scripts are executed on the server 
  • PHP is free to download and use 

PHP is an amazing and popular language! 
It is powerful enough to be at the core of the biggest blogging system on the web (WordPress)! 
It is deep enough to run the largest social network (Facebook)! 
It is also easy enough to be a beginner's first server side language! 

Features of PHP

  • PHP can generate dynamic page content 
  • PHP can create, open, read, write, delete, and close files on the server 
  • PHP can collect form data 
  • PHP can send and receive cookies 
  • PHP can add, delete, modify data in your database 
  • PHP can be used to control user-access 
  • PHP can encrypt data 

With PHP you are not limited to output HTML. You can output images, PDF files, and even Flash movies. You can also output any text, such as XHTML and XML.



Check out the code in the editor. Looks familiar, doesn't it? That's because a lot of it is regular old HTML! The PHP code is written in the <?php and ?>  . See how it generates numbers, creates lists, and adds text directly to your webpage?

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