PHP Tutorial - Introduction

PHP Tutorial - Introduction

In this tutorial you will learn about PHP - Introduction to PHP, What you should already know? What’s PHP? What’s the difference between PHP and HTML? When to use PHP? What makes PHP a choice among the other scripting languages?

What you should already know?

• You have to have good knowledge of the following before you can proceed:
• HTML
• JavaScript

What’s PHP?

• PHP stands for Hypertext Preprocessor.
• PHP scripts run inside Apache server or Microsoft IIS.
• PHP and Apache server are free.
• PHP code is very easy.
• PHP is the most used server side scripting language.
• PHP files contain PHP scripts and HTML.
• PHP files have the extension “php”, “php3”, “php4”, or “phtml”.

What’s the difference between PHP and HTML?

• HTML files are requested by browser, and returned by server.
• PHP files are requested by browser, and executed by the server to output a plain HTML that is returned to the browser.

When to use PHP?

• Creating Web pages that contain dynamic contents.
• esponding to HTML forms.
• Accessing databases.
• Securing data.

What makes PHP a choice among the other scripting languages?

• PHP is easy to learn.
• PHP is free.
• PHP can run on Windows and Unix servers.
• PHP is very fast.