The document discusses PHP frameworks, specifically CodeIgniter, highlighting its benefits such as ease of handling complex problems, standardization, security, and reusability of code. It outlines the architecture, key components, and classes like database, input, loader, uri, and validation, which facilitate web application development. Additionally, it mentions the directory structure of CodeIgniter and provides references for further information on PHP frameworks.

2. Presenters:
Awais Hammed
Ayaz Farid Shah
Samiya Rafique

4. What is Framework??
A PHP framework is a basic platform that allows us to
develop web applications.
Benefits of using Framework:
 Its easy to handle the complex problems easily.
 Standardization
 Security
 Extensibility
 Fast Loading
 Reusable of code
 Increase Flexibility

5. Top 10 Frameworks
 Codeigniter
 Yii
 CakePHP
 Zend
 Symfony
 PHPDevShell
 Prado
 Akelos
 Zoop
 QPHP

6. Introduction
 PHP Web Application Frameworks
 Open Source
 Rapid Development up to 50%
 Originally Released in 2006
 Recommended by Rasmus Lerdof

7. Why choose codeigniter
 Light Weight
 Fast Performance
 Little Configuration
 Little Server Requirements
 Easy to Understand
 No installation Necessary
 Built in Security tools
Database Abstraction

8. Why use Framework (LikeCodeigniter )
Reusability
Avoid Copy/Paste
Reuse codes in multiple projects
Maintainability
Anyone can extend or edit your application

9. Codeigniter follow MVC
World’s best framework follows MVC Architecture
Reasons:
 Organize code
 Logics
 Application divide into(Model-View-Controller )

10. What should you know
 HTML
 CSS
 PHP
 MY SQL

11. Directory Structure
Application Folder
 Cache
 Config
 Controllers
 Core
 Helpers
 Languages
 Libraries
 Logs
 Models
 Third party
 View

12. Directory Structure (Cont.…)
System Folder
 Core
 Database
 Fonts
 Helpers
 Languages
 Libraries

13. Directory Structure (Cont.…)
User Guide Folder
 Index.html

14. Codeigniter Architecture

15. Codeigniter Classes
CI’s built-in classes contain the basic functionality that are frequently
used by web applications.
The most-used classes are 5:
 Database
 Input
 Loader
 URI
 Validation

16. Database Class
 Codeigniter provides a simple way to access the database.
 Generates queries using the Active Record(insert, update and
retrieve with minimal scripting ) Pattern.
 Provides method “chaining” for easy query building
 $this->db.->where(‘name’,$name);

17. Input Class
The Input Class serves two purposes:
 It pre-processes global input data for security.
 It provides some helper methods for fetching input data and pre-processing it.
Input Filtering
 Security Filtering
 XSS Filtering( prevent cross-site scripting attacks)
 Assessing form data
 $this->input->post();
 $this->input->get();
 $this->input->cookie();
 $this->input->server();

18. Loader Class(Theseelementscanbelibraries(classes))
Loader, as the name suggests, is used to load elements. These elements can
be libraries (classes) View files, Drivers, Helpers, Models, or your own files
like.
 Databases
Views
 Helpers (small php functions)
 Plugins (is a piece of software that acts as an add-on to a web browser and
gives the browser additional functionality.)
 $this->load->view(‘viewname’);

19. URI(UniformResourcesIdentifier) Class
The URI Class provides methods that help you retrieve information from
your URI strings.
Provides access to specific parts of the URI string.
Typically there is a one-to-one relationship between a URI string and its
corresponding controller class/method.
 $this->uri->segment(n);

20. Validation Class
Helps validate user form input
 Required fields
 Required string formatting (length,)
Enables success and failure messages on form submittal
form submittal

21. Creating Libraries
 Libraries are similar to helpers.
 You can create entirely new libraries.
 You can extend native libraries.
 You can replace native libraries.

22. Steps for creating a “Hello World”
program in CI

23. References
 PHP framework comparison benchmarks
 http://avnetlabs.com/php/php-framework-comparison-
benchmarks
 Why Should we use a PHP Framework?
 http://www.ashesh.com.np/why-should-we-use-a-php-
framework/
 CakePHP official site
 http://cakephp.org/
 CodeIgniter Site
 http://codeigniter.com
 PHP frameworks lists
 http ://www.phpframeworks.com/
 http://www.phpwact.org/pattern/model_view_co
ntroller

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