CodeIgniter is a PHP web application framework that focuses on minimizing code for common tasks. It was created in response to documentation issues and complexity in other frameworks. CodeIgniter sees popularity due to its lightweight nature, active record database support, and ease of use through features like form validation and file uploading. It follows an MVC architecture and has a large user community. While flexible and customizable, it lacks some object orientation and has irregular release cycles.

2. What is
CodeIgniter
What is
Framework
Pros and Cons of
Codeigniter
History of
CodeIgniter
Why
codeIgniter
popular

3. What is Framework

4. In general, a framework is a real or
conceptual structure intended to serve as a
support or guide for the building of
something that expands the structure into
something useful.
WHY we use a Framework
A framework is not absolutely necessary:
it is “just” one of the tools that is available
to help you develop better and faster.

6. What is
CodeIgniter

7.  CodeIgniter
is an Application Development
Framework .

A toolkit – For people who build web sites
using PHP.
 Its
goal is to enable you to develop projects
much faster than you could if you were
writing code from scratch.
 focus
on your project by minimizing the
amount of code needed for a given task.

8. 
You want a framework with a small footprint.

You need exceptional performance.

You need clear, thorough documentation

You want a framework that requires nearly zero
configuration.

You want a framework that does not require you to use the
command line.

You eschew complexity, favoring simple solutions.

10.  Benchmarking
 Database
 Encryption
 FTP
 Image
Manipulation
 Pagination
 Trackback
 Unit Testing
 User Agent
 Calandaring

11.  Email
 File
Uploading
 HTML Table
 Input And Security
 Session
 Template Parser
 URI
 Validation

12.  Array
 Date
 File
 HTML
 Smiley
 Text
 URL
 Cookie

13.  Download
 Form
 Security
 Strings
 Typography
 XML

14. History of CI

16.  CI
was written by Rick Ellis,
 rock musician turned programmer
 CEO of pMachine

17. Some Problems he faced

Terrible documentation, if it exists at all.
Endless number of assumptions regarding your
knowledge
and skill level, and generally expect you to figure
it all out.


They are written for people who have root
server privileges and can change system settings.

Had to access to the command line.

18. Some Problems he faced Cont....

Tend to require lots of dependencies, like the
PEAR libraries or various open source ones.

Tend to be needlessly complex to use, with
obtuse syntax, XML based templates, and other
features that are simply not necessary for most
web applications.

They are either ponderously big, or too
minimalist to be useful.

The most current frameworks only run on PHP 5,
which at present only has a 5% adoption rate.

19.  The
first public version of CodeIgniter was
released on February 28, 2006

20.  latest
stable version 2.1.4 was released July
8, 2013.

21. Why codeIgniter
Popular

22.  It’s
Free
 Lightweight
 Simple to install
 Can easily develop a project
 Active Record Database Support
 Full Featured database classes with support
for several platforms
 Form and data validation
 File uploading class
 Pagination

23.  MVC
Architecture based framework
 Little to no server requirements.
 Easy to understand and extend.
 All the tools you need in one little package.
 Built in security tools
 Large and active user community
 Excellent documentation.
 Flexible URI Routing
 Session management
 Email sending class

26. Pros And Cons
Of CodeIgniter

27.  Easy
to learn
 Easy handling and customizing.
 Offers flexibility and easy management With
MVC based framework
 Good collection of possessed libraries
 Awesome documentation of the user guide
 Provides easier configuration and
customization of configuration files
 Active Record Implementation is simply
superb and easy to remember

28.  Its
PHP based only and not very objectoriented in some parts
 PHP4
legacy code
 Company-driven

instead of community-driven
Irregular releases
 Framework
itself has no built-in ORM (only
via 3rd party solutions)

29.  What
is framework.
 Available php Frameworks.
 What is Codeigniter.
 History of Codeigniter.
 Why codeigniter is popular.
 Pros and Cons of Codeigniter.