GNUNIFY '08

Welcome to AJAX with LAMPWorkshopHussain Fakhruddin

hussulinux@gmail.com

Overview of LAMP

Introduction

Client Server Model, What are web servers

What is PHP? Why Use PHP?

PHP Crash Course

Language Reference: Variables, Controls, Loops etc.

Introduction

What is PHP

PHP: Hypertext Preprocessor

Why not HTP or HP or HPP?

Recursive Acronym

An acronym in which the first letter of the first word is represented by the acronym itself.

GNU = GNU is NOT UNIX

PHP: PHP Hypertext Preprocessor

Why Use PHP

If you want to add dynamic content to your pages

If you want to make your pages easier to maintain

If youre learning your first "real" computing language

If you need a solution thats portable across multiple platforms (e.g. Red Hat Linux to Windows 2000)

If you like free software or need a free solution

Examples of uses of PHP & MySQL:

Sign-up Forms

Surveys

Polls

Email a Postcard

Content Management

What you need to start a website?

What you need?

Server

PHP parser

Configurations.

Some basic configurations

Save all your file in

Run from browser as

http://localhost/ < FILENAME >

Open any Text Editor and start coding

PHP Crash Course (cont.)

Embedding PHP in HTML

Hello World!

PHP tag styles:

XML: , Short: , ASP:

Script:

PHP Crash Course (cont.)

Adding dynamic content by adding the date to the page.

Hello World!

Date() http://www.php.net/manual/en/function.date.php

PHP Function Reference http://www.php.net/manual/en/funcref.php

One useful function is phpinfo(). Gives system information so you can quickly find out whats on your machine.

Using PHP to Query a
MySQL Database

A List of Users Who Have Signed Up For OscarPool

AJAX

What's Ajax the buzzword

Stands for Asynchronous JavaScript and XML

Its a web development technique.

Its Faster and Interactive.

Who uses Ajax?

Gmail

Google Maps

Meebo

Ebuddy

And many more

Technology behind AJAX

Why Ajax?

Faster,

Increase Interactivity

Rich User Experience

Steps to AJAX

Create a XMLHttpRequest request object

Tell the request object where to send the request

Tell the object what to do when the request is answered

Tell the object to make a request

Lets Code

var XMLHttpRequestObject = false;

if (window.XMLHttpRequest) {

XMLHttpRequestObject = new XMLHttpRequest ();

}

else if (window.ActiveXObject) {

XMLHttpRequestObject = new ActiveXObject ("Microsoft.XMLHTTP");

}

if (XMLHttpRequestObject) {

document.write ("Welcome to AJAX");

}

PHP & MySQL Resources

Web Sites

http://www.php.net/

http://www.phpbuilder.com/

http://www.devshed.com/

http://www.phpmyadmin.net/

http://www.hotscripts.com/PHP/

http://www.mysql.com/

http://www.owasp.org/

Books

PHP and MySQL Web Development 2nd Edition, Welling & Thomson

Web Database Applications with PHP & MySQL, OReilly Publishers

PHP Cookbook, OReilly Publishers

MySQL Cookbook, OReilly Publishers

My special Thanks to:

David Olsen (david.olsen@mail.wvu.edu) for his help in presentation's content.

PHP Freaks (http://www.phpfreaks.com) This is where I learnt PHP from

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