Codeigniter is a framework which is mainly focussed on web application development .It is well known for its performance speed.It has inbuilt libraries which helps to build web application faster.
Reason behind this is we does not need to follow strict mvc pattern while creating application.We can also able to build with model only view and controllers are enough to built a application.
- Lightweight – Compared to other PHP frameworks CodeIgniter is very lightweight, meaning it is easier to create fast and responsive code
- No Installation – Unlike some PHP frameworks there is no installation required, you just include the CodeIgniter library and off you go
- Large Community – CodeIgniter has a huge active community so you know there are plenty of people willing to help if you get stuck on a particularly difficult problem
- Superb Documentation – CodeIgniter provides excellent documentation with examples
- Flexibility – CodeIgniter allows you to easily extend and expand on its base architecture making it easier to break the mold and produce some really unique web applications