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CI 4

CI 4 is the latest version of the popular PHP web application development framework, CodeIgniter. It comes with a host of new features and improvements over its predecessor, CodeIgniter 3. In this article, we will explore some of the key features of CodeIgniter 4.

Development Framework – a toolset – for  PHP web developers. Its purpose is to allow you to construct projects much faster than if you were creating code from scratch by offering a comprehensive set of libraries for often requested operations. 

CI 4 Codeignitor - Wilcode Development


 as well as a simple interface and logical structure to access these libraries. CodeIgniter lets you creatively focus on your project by minimizing the amount of code needed for a given task. CodeIgniter is an Application Development Framework – a toolkit – for people who build websites using PHP. Its goal is to enable you to develop projects much faster than you could if you were writing code from scratch, by providing a rich set of libraries for commonly needed tasks, as well as a simple interface and logical structure to access these libraries. CodeIgniter lets you creatively focus on your project by minimizing the amount of code needed for a given task.CodeIgniter is a PHP framework designed to build dynamic features and advanced functionality through minimal coding or complexity. It uses a Model View Controller (MVC) framework to simplify the development process. CodeIgniter is a PHP framework that allows you to create dynamic features and advanced functionality with little to no code or complexity. To make development easier, it employs a Model View Controller (MVC) framework.

MVC is a software development paradigm in which the application logic is separated from the display. In practice, because the user interface is distinct from the PHP coding, your web pages may contain minimum scripting.


The MVC pattern’s purpose is to separate business logic from the user interface, resulting in more maintainable code.

When the MVC pattern is used, the Controller acts as a bridge between the Model, which stores the application data, and the View, which is in charge of presentation. When a CodeIgniter receives a request, it travels to the index php page to see if the request can be serviced from the cache location or if it has to go to the database.

If the requested resource is in the cache, the user receives an instant response. If the resource is not found in the cache, it is sent to the application controller.

This controller is in charge of loading the View class with the necessary models, libraries, data, and plugins. The View class converts the data into a readable manner and displays it to end users via a web browser. CodeIgniter is a dominating PHP framework with a simple and well-designed toolbox. CodeIgniter is extremely simple and quick, making code portable. CodeIgniter is one of the greatest frameworks for developing powerful, simple websites and applications. It provides a great collection of elements for creating code from scratch. If you are see

Better performance

One of the major improvements in CodeIgniter 4 is its performance. The framework is designed to be faster and more efficient than its predecessor. CodeIgniter 4 comes with a new routing engine that is faster and more flexible than the previous version. It also includes support for PHP 7.2 and above, which provides better performance than older versions of PHP.

Improved security

CodeIgniter 4 has improved security features to help developers create more secure applications. The framework has built-in protection against cross-site scripting (XSS) and cross-site request forgery (CSRF) attacks. It also has better encryption and hashing functions to help keep sensitive information safe.

Model-View-Controller (MVC) architecture

CodeIgniter 4 follows the Model-View-Controller (MVC) architecture, which helps to separate the application logic from the presentation layer. This makes it easier to maintain and update the application code. The framework also comes with a new Command Line Interface (CLI) tool, which can be used to generate code for the MVC components.

Lightweight and modular

CodeIgniter 4 is designed to be lightweight and modular, which makes it easy to use and customize. The framework has a minimal footprint and does not require any installation or configuration. It also comes with a modular structure, which allows developers to use only the components they need for their application.

Restful API Development

Restful API development is becoming more and more important in today’s web development. CodeIgniter 4 has built-in support for creating Restful APIs, which makes it easy to build APIs for web and mobile applications. The framework has a new RESTful routing engine that can handle complex API requests and responses.

Query Builder

CodeIgniter 4 includes a new Query Builder class that helps to simplify database interactions. The Query Builder allows developers to create complex SQL queries using a simple and intuitive syntax. It also provides protection against SQL injection attacks by automatically escaping user input.

Internationalization (i18n) support

CodeIgniter 4 has built-in support for internationalization (i18n), which makes it easy to create applications that support multiple languages. The framework provides tools for translating application text and formatting dates and times according to local conventions.

Composer Support

CodeIgniter 4 uses Composer, a popular PHP package manager, for managing dependencies. This makes it easy to install and update third-party packages and libraries. The framework also includes a built-in autoloader that can automatically load classes and files based on their namespaces.

Debug Toolbar

CodeIgniter 4 includes a new Debug Toolbar that helps developers to debug their applications. The toolbar provides information about the current request and response, as well as the execution time and memory usage of the application. It also includes tools for inspecting variables and database queries.

In conclusion, CodeIgniter 4 is a modern and powerful PHP web application development framework that offers a range of new features and improvements over its predecessor. With its improved performance, security, and support for Restful API development, it is a great choice for building modern web applications. Its lightweight and modular structure also make it easy to use and customize, while its support for internationalization and Composer make it a versatile and powerful tool for developers.