Many libraries are created in CodeIgniter development. However, not all libraries are required to build the project. Some libraries are unnecessary and do not need to be there. These libraries eat up space and slow down the server’s speed.

Codeigniter is a PHP framework that offers an open-source development platform. It makes it easy for PHP developers to use modular methods and access any function. Friendly URLs make it easy to create large-scale dynamic and secure web applications.

CodeIgniter 4 (the current version) is the framework. It can be used with PHP 7.3+ (including PHP 8.0). The current version of CodeIgniter 4 is under development. 1.4

Comparison of Laravel and Codeigniter. Laravel is better than CodeIgniter mainly due to the coding style, which is most loved for its elegant appearance. It also allows for rapid application development.

Libraries are the core of any CodeIgniter framework. This library provides an extensive set of libraries that can speed up the development of applications. System/libraries contain the system library. We only need to load the library we wish to use.