CodeIgniter Tutorial

What is CodeIgniter?

CodeIgniter is an open-source framework for developing a dynamic web application with the use of PHP. It uses the MVC framework to develop the project, which is much faster than from the writing code to scratch. Also, it has a rich collection of libraries for connecting with the database and performing multiple operations like sending an email, validation, uploading of the files, deleting, and more. Furthermore, it is a lightweight framework whose main task is to reduce the complexity of the program and create a well-defined application.

Why we use CodeIgniter?

  • It is an open-source PHP framework so anyone can customize the CodeIgniter framework according to the requirements of the application.
  • The size of the CodeIgniter software is small as compared to the other PHP framework. When we install this software in our system, it takes the size of approximately 3 MB.
  • The application which you have created through the CodeIgniter framework can run faster due to the rich collection of libraries.
  • It follows the Model-View-Controller (MVC) approach so that one file does not contain too large code for coordinating with each other. Due to this, it makes the code easier to read, write, and understand for the developers. 
  • It contains a dynamic record of the application, which is easy to implement and recollect the records.
  • It is a lightweight application.
  • It has well-defined documentation for the client control, which makes CodeIgniter easy to learn for any coder to utilize all the resources of the application.
  • It has some built-in components through which you can send an email, database management, session management, and many more.
  • It provides a facility through which you can perform some additional action.
  • It supports the query builder database.
  • It is flexible in programming. It provides flexibility to web developers to develop web applications even without the use of a framework.
  • CodeIgniter supports many databases like MySQL, SQL Server, Maria DB, PostgreSQL, SQLite, Oracle, etc.
  • CodeIgniter is a highly used framework in all over the world. It is helpful for the developers to solve the problem faced by another web developer in developing a web-based application.

History of CodeIgniter

Rick Ellis created the first beta 1.0 CodeIgniter framework at EllisLab on February 28, 2006. The CodeIgniter was taken from the Expression Engine, which is a collection of refracted class written for EllisLab’s flagship CMS (Content Management System). In July 2013, EllisLab announced that they did not have enough resources for developing the CodeIgniter framework, so they were finding a new owner to this framework

for developing. And in October 2014, EllisLab announced that the CodeIgniter would further, developed under the supervision of the British Columbia Institute of Technology.

CodeIgniter Index