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PHP Introduction

What is PHP?

  • PHP stands for "PHP: Hypertext Preprocessor"

  • PHP is a widely-used, open source scripting language

  • PHP is a server side scripting language.

What is a PHP File?

  • PHP files can contain text, HTML, CSS, JavaScript, and PHP code

  • PHP code is executed on the server, and the result is returned to the browser as plain HTML

  • PHP file and ends with the extension ".php".

What Can PHP Do?

  • 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.

Why PHP?

  • PHP runs on various platforms (Windows, Linux, Unix, Mac OS X, etc.)

  • PHP is compatible with almost all servers used today (Apache, IIS, etc.)

  • PHP supports a wide range of databases

  • PHP is free. Download it from the official PHP resource:

  • PHP is easy to learn and runs efficiently on the server side

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