What is Codeigniter Library and how we can load it?

Codeigniter provides a rich set of libraries, which indirectly increase the speed of developing an application. These Codeigniter system library is located in system/libraries.

In Codeigniter the library can be loaded with $this->load->library('class name');

If we want to load multiple libraries then we can use like $this->load->library(array('comment', 'blog'));