PHP – Module 2

Hussain Fakhruddinhussulinux@gmail.com

Recap from Module-1

● Client Server Model● HTML / XHTML● Request – Replies and Protocols● Overview of PHP's capabilities● Why Use PHP (10 Reasons to use PHP)● PHP Vs JS

Agenda

● Open Source Concepts● Obtaining, Installing and Configuring PHP● Obtaining PHP Source Code● Installing PHP from Binary Packages● Dynamic Extensions, Checking Install with

phpinfo() Function.

Just before we begin

● Inventor of PHP

Rasmus Lerdorf

PHP Facts:

● According to a survery of 47,173,415 domains,15,205,474 had PHP installed.

Lets get back!

● Open Source Poll

How many of you would give away your piece of software to a person for FREE without charging anything, absolutely NOTHING?

About Open Source

● Richard Stallman Story● Unix / Linux Systems● Freeware VS Free software

Why Open Source

● Give it free for Students/ Researchers/ IT people for growth of knowledge base and form a community

● Corporates are anyway going to pay● Separate levels of Licenses. GNU GPL,

LGPL etc.● PHP's License is called PHP license

How to get PHP

● Various Means of obtaining PHP● 1) Internet

● www.php.net● 2) Software bundled packages

● WAMP, XAMPP● 3) Linux/Unix Distros

● Fedora, CentOS, Ubuntu● 4) Utilities CDs with magazines

● Pcmags etc

Before that...

● What do you need to start a website:

● A Web server● PHP Parser● Configurations

Before that...

● What do you need to start a website:

● A Web server – Apache, 85% of the Internet runs on Apache.

● PHP Parser – PHP Preprocessor● Configurations – PHP.INI, HTTPD.CONF

Some know how of PHP

● Latest version : PHP 5.X.X● Official Website: www.php.net● Official Help: PHP Manual

● http://www.php.net/manual/en/● Official Download Page:

● http://www.php.net/downloads.php

PHP Download Page

PHP Structure

3rd Party Tools

● Two most popular bundles:

● WAMP: Windows, Apache, MySQL & PHP● XAMPP: Apache Friends

WAMP

● Obtain from:● www.wampserver.com

● For Windows only● Excellent for Starting

up and advance simple usage

XAMPP

● Download from:● http://www.apachefri

ends.org● Very High end.● Not for starters,

but yes for pros● Linux and Windows

both

Installation of WAMP- Demo

PHP Extensions

● What are they? ● They are Addons on PHP● They add extra features to PHP Parsers.● Example: Creating A PDF, Creating an Image● Most famous is : PEAR (We'll do it later) and

Zend Engines - We wont do this :(

Some PHP Extensions

Summary

● We discussed :● Open Source and its Philosophy● PHP and important Links● Obtained PHP from various places ● Installing PHP● Installing 3rd Party bundled kit.● PHP extensions

Next on Schedule:

● Hello World Program in PHP● PHP Tags and Embedding HTML● Simple PHP Script examples● PHP and HTTP Environment Variables.

See you tomorrow :)