Top CodeIgniter Interview Questions and Answers

by Vijay Kumar Software Engineer

If you're an aspirant who is planning to sit through Codeigniter interview questions, then you must understand a few basics first. So, delve straight into the information given below and ace your Codeigniter interview.

Basics of Codeigniter

Codeigniter is a PHP framework used for developing web applications and websites. It is based on MVC (Model View Control) pattern and is considered to be one of the best frameworks in terms of speed. Codeigniter aids your work by providing a huge set of libraries, logical structure and simple interface which enables you to create projects faster than manually writing codes from scratch. The very first version of Codeigniter was released on February 8, 2006. Its current development version 3.o dev, licensed with Open Software License, was released on October 20, 2011.

File structures

There are two file structures of Codeigniter i.e application- helpers, hooks, language, library, cache, models, views, third party, Controllers and system- core, database, fonts, language, libraries.

URL patterns

In default URL pattern, there are four main components in Codeigniter. First, we have the server name followed by the controller class name. Then, we have controller function name and at the end, there are function parameters. We can access the Codeigniter using the URL helper.

Syntax- http://servername/controllerName/controllerFunction/parameter1/parameter2.

MVC and Helpers

MVC- Codeigniter is based on MVC pattern. It is an acronym for Model view Control. MVC separates the application logic from presentation. Since the presentation is separated from PHP, MVC ensures that the web pages contain less scripting.

Helpers- Helpers are the bunch of functions in a particular category that aid you in your tasks. There are various types of helpers like URL helpers, form helpers, text helper, cookie helpers and file helper. Each of these types has a distinct set of functions.

Codeigniter is the most sought-after framework of PHP when it comes to developing dynamic websites and web applications. Developers prefer it due to its speed. Cracking Codeigniter interview questions is not a cakewalk. So, the above basics and features have been curated keeping in mind the aspirants who are planning to ace the interview and win over their opponents. Hope you would keep your answers brief, crisp, and up to the mark while discussing with the interview panelists