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Session 1: Introduction to PHP & MySQL

iNET Academy

Open Source Web Development

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Objectives

PHP & MySQL in web development Components of PHP applications Installation & Configurations of Apache,

MySQL and PHP Open source tools

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World Wide Web Web pages

Created by HTML => Static pages Dynamic pages

By modifying HTML code By using CGI programs written in C or Perl PHP&MySQL make creating dynamic websites easier and faster

World Wide Web: HTML & XHTML CSS URI HTTP

HTTP – HyperText Transfer Protocol Developed by W3C and IETF Defines how web pages are transferred across the Internet. A request-and-response protocol that connects clients and servers

Server listen on port 80 Client send request Server send back response (files, images …)

HTTP => TCP => IP

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PHP&MySQL in web development

PHP&MySQL work well together PHP&MySQL have open source power PHP&MySQL have community support PHP&MySQL are fast PHP&MySQL don’t bog you down with

unnecessary details

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Components of a PHP Application

PHP: programing language First appear in 1994 Is an interpreted language Compete with ASP and JSP Simply but powerful Compatible with many OS Can be extended with new capabilities

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Components of a PHP Application (cont.) Apache: web server

Get browser request and return web pages Currently have 3 versions:

1.3.x 2.0.x rewrite and support threading 2.2.x

Apache vs IIS Uses modules to load extensions Works with many OSs

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Components of a PHP Application (cont.) MySQL: database server

Developed in 1990 Support different database engines: MyISAM

and InnoDB Three versions currently

4.1 5.0 5.1

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Integrating many sources of Information Web pages includes not only HTML code but

also CSS: Cascading Style Sheets PHP/JSP/ASP Java Script

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Requesting data from a web page

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Requesting data from a web page (cont.)

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Installation

Install Apache, MySQL and PHP separately Install all-in-one package XAMPP

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Installing Apache using Installation Wizard Goto website http://httpd.apache.org Download the Apache 2.2.x Win32 MSI

apache_2.2.x-win32-x86-no_ssl.msi apache_2.2.x-win32-x86-openssl-….msi

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Installing Apache using Installation Wizard (cont.) The Installation Wizard prompts you for basic

configuration

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Installing Apache using Installation Wizard (cont.) Apache License terms and conditions for use

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Installing Apache using Installation Wizard (cont.) Apache HTTP Server Information

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Installing Apache using Installation Wizard (cont.) Server Network Information Dialog

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Installing Apache using Installation Wizard (cont.) Selecting a setup type

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Installing Apache using Installation Wizard (cont.) Destination Folder dialog for the Apache

installation files

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Installing Apache using Installation Wizard (cont.) “Ready to Install” dialog

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Installing Apache using Installation Wizard (cont.) Apache’s default index page after installation

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Configuring Apache

Choose Edit Apache httpd.conf

Some important directives Listen LoadModule DocumentRoot Directory Options Order, Allow, Deny Alias

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Practice: Installing & Configuring Apache

In this practice, you will Install the apache server using Installation

Wizard Config the server with the following tasks

Changge the Port to 8080 Change the DocumentRoot to another folder Add new aliases and directories Enable the Indexes directive on one of these

alias

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Installing PHP using Installation Wizard Goto http://www.php.net Download the PHP 5.2.x Win32 MSI

php-5.2.x-win32-installer.msi

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Installing PHP using Installation Wizard (cont.) The PHP MSI installer

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Installing PHP using Installation Wizard (cont.) The License Terms dialog

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Installing PHP using Installation Wizard (cont.) The installation directory for PHP

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Installing PHP using Installation Wizard (cont.) The Web Server Setup dialog

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Installing PHP using Installation Wizard (cont.) Select the Apache install path

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Installing PHP using Installation Wizard (cont.) The Installation Options dialog Choose extensions: mbstring and mysql

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Installing PHP using Installation Wizard (cont.) Dialog confirming that the installer will config

Apache

After finish, the Successful Installation dialog appears

Restart Apache Server

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Installing PHP manually

Goto the website http://www.php.net Download the PHP 5.2.x zip pakage

php-5.2.6-Win32.zip Unzip it to the folder C:\PHP Edit the httpd.conf. Add three lines as follow

at the bottom

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Installing PHP manually (cont.)

Goto folder C:\PHP Edit the file named “php.ini-recommended”

and SaveAs “php.ini” Restart the Apache server

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Test of PHP installation

Create a phpinfo.php file with the content <?php phpinfo(); ?>

Save it under the Apache DocumentRoot Directory. Open browser and type http://localhost/phpinfo.php in

the location bar The result should be

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Practice: Installing and Configuring PHP In this practice, you will:

Install PHP manually Test the installation

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Installing MySQL using Installation Wizard Goto the website http://www.mysql.com Download the window installer version of

MySQL 5.0.x mysql-essential-5.0.51b-win32.msi

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Installing MySQL using Installation Wizard (cont.) The MySQL Setup Wizard

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Installing MySQL using Installation Wizard (cont.) Select a setup type

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Installing MySQL using Installation Wizard (cont.) The MySQL.com account setup dialog

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Installing MySQL using Installation Wizard (cont.) Customizes the database settings

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Installing MySQL using Installation Wizard (cont.) Choose level of detail

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Installing MySQL using Installation Wizard (cont.) Howto start MySQL and setup the system

path

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Installing MySQL using Installation Wizard (cont.) Security setting for the database window

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Installing MySQL using Installation Wizard (cont.) Installation is completed

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Config PHP to connect to MySQL

Open the php.ini files Find the extension_dir directive and modify as follow

Find the extension directive and modify as follow

Append “;C:\php” to the system environment’s variable named Path. (MyComputer->Properties->Advanced->Environment Variables

Restart Windows then browse the phpinfo.php page.

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Config PHP to connect to MySQL (cont.)

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Practice: Installing MySQL and Configuring PHP In this practice, you will:

Install MySQL Config PHP to connect to MySQL Test the config’s result

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Open source tools

XAMPP: all-in-one installation package phpMyAdmin: admin MySQL using web-

based tool SQLyog: best GUI tool to administer MySQL Notepad++: PHP&other languages editor.

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Summary

PHP is usually used to develop web applications

PHP-based web applications always go together with Apache and MySQL