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What is CodeIgniter? How does it Work? Features of CodeIgniter

By divine_admin_infosys

What is CodeIgniter?

CodeIgniter is a PHP MVC framework for creating applications quickly. CodeIgniter gives out of the crate libraries for associating with the database and performing different tasks. Like sending emails, uploading files, overseeing sessions, and so on.

Why CodeIgniter?

Let’s see some of the features that make CodeIgniter extraordinary. The following list is not comprehensive but gives you a thought of what to expect when working with CodeIgniter.

Small footprint

The whole source code for CodeIgniter structure is near 2MB. This makes it simple to ace CodeIgniter and how it functions. It likewise improves deploying and updating it.

Blazing fast

Users tend to favor applications that load very fast. On the off chance that you have worked with a portion of the modern frameworks, at that point you will understand that they take short of what one second to load soon after installation. CodeIgniter, you can loads, by and large, around under 50ms. The additional time spent improving like is the situation in another framework is opened up when you are working with CodeIgniter.

Loosely coupled

The inherent features are intended to work freely without depending on a lot of different components. This makes it simple to keep up and make upgrades

MVC Architecture

The framework utilizes the Model-View-Controller building plan. It is an industry-standard practice when working with web applications. MVC isolates the data, business logic, and presentation.

Excellent documentation:

The framework is well documented, and there are acceptable books, tutorials and answered forum questions on CodeIgniter. This implies whatever challenges that you have, odds are somebody has just experienced the issue, tackled it and the arrangement is out there for you.

Application-specific built-in components:

CodeIgniter has components for sending email, database management, session management and a lot more.


CodeIgniter accompanies a few libraries, and helpers out of the container. In the event that what you need isn’t there or you might want to implement an existing feature your way. At that point you can do so effectively by making your libraries, partners, packages, and so on.

Short learning curve:

CodeIgniter is easy to master for anyone who is already familiar with PHP. Within a very short time, the student can start developing professional applications using CodeIgniter.

How CodeIgniter Works?

CodeIgniter is an MVC framework. MVC represents a Model View Controller. At the point when a client requests a resource, the controller reacts first. The controller comprehends the client request at that point request the important information if vital.

The following image shows how CodeIgniter works:

Image result for flow of codeigniter

CodeIgniter Features

Features all by themselves are an extremely poor approach to pass judgment on an application since they disclose to you nothing about the client experience, or how instinctively or cleverly it is structured. Features don’t uncover anything about the quality of the code, or the performance, or the scrupulousness, or security rehearses. The best way to truly pass judgment on an application is to attempt it and find a workable pace code. Meanwhile here’s a list of CodeIgniter’s main features.

  • Model-View-Controller Based System
  • Extremely Light Weight
  • Full-Featured database classes with support for several platforms.
  • Query Builder Database Support
  • Form and Data Validation
  • Security and XSS Filtering
  • Session Management
  • Email Sending Class. Supports Attachments, HTML/Text email, multiple protocols (Sendmail, SMTP, and Mail) and more.
  • Image Manipulation Library (cropping, resizing, rotating, etc.). Supports GD, ImageMagick, and NetPBM
  • File Uploading Class
  • FTP Class
  • Localization
  • Pagination
  • Data Encryption
  • Benchmarking
  • Full Page Caching
  • Error Logging
  • Application Profiling
  • Calendaring Class
  • User Agent Class
  • Zip Encoding Class
  • Template Engine Class
  • Trackback Class
  • XML-RPC Library
  • Unit Testing Class
  • Search-engine Friendly URLs
  • Flexible URI Routing
  • Support for Hooks and Class Extensions
  • Large library of “helper” functions
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