CodeIgniter framework is one of the popular and widely used all over the globe for web applications development. Used primarily for large projects, this PHP framework is certainly one of the most agile framework in the market. Why Use CodeIgniter?CodeIgniter runs on PHP. It is light weight and fast compared to other frameworks. It uses MVC Framework. Rich set of libraries for common tasks, simple interface and logical structure to access libraries makes it very easy to use. It minimizes the amount of code needed for a given task and lets you focus on your project. l It follows MVC design pattern: Current days, Model View Controller(MVC) is the most popular design pattern in software development.CodeIgniter was developed with model-view-controller architecture in mind, making it a popular choice for web-development projects that require a custom GUI. l Performance matters: It obtains better scores than other PHP based application frameworks in terms of loading speed / performance.The total download size of CodeIgniter is under 2 mb, and its lightweight design provides maximum speed with minimum performance impact. l Easy integration support: It gives a very easy way to integrate third-party tools as library/plugins. l Easy Documentation: Their documentation are simply mind-blowing, actually best among all other framework documentations.     l Robust Security – CodeIgniter has built-in security that protects it from common XSS and CSRF attacks, providing a secure PHP platform for developers. l Great Performance – Speed has always been a focus on this open-source PHP framework. Streamlined code and simple file organization make it easy to create fast, responsive web pages. l Active Community – CodeIgniter has an?active forum, IRC community, and GitHub community, where common questions can be answered and developers can connect to discuss their projects. Key Features of Codeigniter :l It is simple to use and easy to set-up. l CodeIgniter is lightweight PHP framework. l Codeigniter is best in terms of documentation as it is well structured and very clear. l It is a stable framework. l The chance of any problem or bugs going unnoticed in Codeigniter is minimal. l Codeigniter has inbuilt templating engine which is again easy to use. l Codeigniter offers output caching. Web pages can be cached so that the loading time can be reduced. l CodeIgniter is tested by thousand of developers that use it in production.         Benefits of Using CodeIgniter: There is a rising demand for CodeIgniter framework among the PHP web developers because of its dynamic features and encompassing benefits. It is a preferred open source PHP framework for building alluring web applications in PHP web development industry. l CodeIgniter does not have large scale monolithic libraries. Its framework is lean and has improved productivity. l It also provides Image Manipulation Library, File Uploading class, FTP class, Localization and pagination. l The bugs in programming codes can be rectified instantly in the web applications. l This PHP framework provides Active Record Database Support, XSS filtering, Form and Data validation, and session management. l Full Page Caching, Data Encryption, Benchmarking, and Error Logging are also possible with this framework. l The web pages can be made with high-end functionalities and additional features by using its in-built resource and libraries. l It allows easy migration from source to destination service hosting. l It offers you user-friendly interface, thereby, helping developers to make an active, flexible, secure and large web applications successfully in a short time. l It can be used to tailor the configuration files easily. l CodeIgniter assists the programmer to create both front-end and rear-end of a web application efficiently and easily in a secured manner. l It is a reliable framework that has got a clear documentation. l There are no restrictive coding rules in CodeIgniter, thus, web developers can use their own coding as well as naming conventions.