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CodeIgniter Tutorial

What is CodeIgniter?

CodeIgniter is an open-source framework for developing a dynamic web application with the use of PHP. It uses the MVC framework to develop the project, which is much faster than from the writing code to scratch. Also, it has a rich collection of libraries for connecting with the database and performing multiple operations like sending an email, validation, uploading of the files, deleting, and more. Furthermore, it is a lightweight framework whose main task is to reduce the complexity of the program and create a well-defined application.

Why we use CodeIgniter?

  • It is an open-source PHP framework so anyone can customize the CodeIgniter framework according to the requirements of the application.
  • The size of the CodeIgniter software is small as compared to the other PHP framework. When we install this software in our system, it takes the size of approximately 3 MB.
  • The application which you have created through the CodeIgniter framework can run faster due to the rich collection of libraries.
  • It follows the Model-View-Controller (MVC) approach so that one file does not contain too large code for coordinating with each other. Due to this, it makes the code easier to read, write, and understand for the developers. 
  • It contains a dynamic record of the application, which is easy to implement and recollect the records.
  • It is a lightweight application.
  • It has well-defined documentation for the client control, which makes CodeIgniter easy to learn for any coder to utilize all the resources of the application.
  • It has some built-in components through which you can send an email, database management, session management, and many more.
  • It provides a facility through which you can perform some additional action.
  • It supports the query builder database.
  • It is flexible in programming. It provides flexibility to web developers to develop web applications even without the use of a framework.
  • CodeIgniter supports many databases like MySQL, SQL Server, Maria DB, PostgreSQL, SQLite, Oracle, etc.
  • CodeIgniter is a highly used framework in all over the world. It is helpful for the developers to solve the problem faced by another web developer in developing a web-based application.

History of CodeIgniter

Rick Ellis created the first beta 1.0 CodeIgniter framework at EllisLab on February 28, 2006. The CodeIgniter was taken from the Expression Engine, which is a collection of refracted class written for EllisLab’s flagship CMS (Content Management System). In July 2013, EllisLab announced that they did not have enough resources for developing the CodeIgniter framework, so they were finding a new owner to this framework

for developing. And in October 2014, EllisLab announced that the CodeIgniter would further, developed under the supervision of the British Columbia Institute of Technology.

CodeIgniter Index

Related Topics

Calendaring Class CodeIgniter

Calendaring Class The calendar library contains various functions that are used to create a dynamic calendar. It also enables you to pass the data to calendar cells and 100% control over the calendar...

6 minutes read.

CodeIgniter Views

A View is a presentational part which shows the information to the users. It is a complex web page which contains navbar, header, footer, sidebar, etc. A view file cannot be called directly...

5 minutes read.

CodeIgniter Email Class

CodeIgniter provides an e-mail library that helps to send a message from one application to another. You can create and send text messages easily in CodeIgniter application even you can set email...

9 minutes read.

Download Helper Codeigniter

Download Helper Codeigniter: The download helper function is used to download data from the server to your computer. The data can be any format like text, jpg, mp3, mp4, etc. Loading...

2 minutes read.

CodeIgniter Language Class

Language Class The CodeIgniter’s language class contains the various functionality that is used to access the language-specific files and text line for the purposes of internationalization. This class provides you suitability to add or...

4 minutes read.

CodeIgniter Routes

The Routes are used to handle URL requests on the browser. It matches the URL request to the predefined routes in CodeIgniter. Therefore, a file must be predefined as a routes.php file to...

6 minutes read.

CodeIgniter Helpers

The Helpers (functions) are stored in the Helper file. It helps CodeIgniter to perform different tasks. The helper file is the collection of many functions that is used to perform specific task. It...

3 minutes read.

CodeIgniter Output class

Output class The CodeIgniter framework contains a core class that is an Output class. It  includes the various functions that are used to send the final web page to the requesting browser. In...

8 minutes read.

Retrieve data from Database

Retrieve data from the Database Now we will discuss how we can retrieve data from the database that we have inserted to the employees table of the database in our previous topic “inserted...

2 minutes read.

CodeIgniter HTML Helper

The HTML helper function is used in CodeIgniter to provide various functionality, such as headings, images, links, list tags, etc. Loading the HTML Helper Before using the html helper function, you must load the...

7 minutes read.

CodeIgniter String Helper

The string helper file contains functions that allows separate operations with strings in CodeIgniter. Loading the String Helper Before using the string helper in the CodeIgniter application, you must load it in the controller...

7 minutes read.

CodeIgniter Array Helper

The Array Helper contains some predefined functions that are used to perform the various operation with array. Load Array helper It is used to load the helper class. We can pass the helper function in the...

6 minutes read.

Delete a record from Database CodeIgniter

Delete a record from the Database After inserting, retrieving, and updating table records, we will now learn how we can delete a particular record from a database table. To delete a record, first, we...

6 minutes read.

CodeIgniter Benchmarking Class

The CodeIgniter contains the Benchmarking class that is used to calculate the time difference between two points or the memory usage of the passed statements in the application. By default, the Benchmarking...

7 minutes read.

Image Manipulation Codeigniter

Image Manipulation A Codeigniter provides an image manipulation class that is used for resizing, cropping, rotation, and many other manipulation tasks. This class also support three major image libraries such as GD/GD2, NetPBM, and...

11 minutes read.

HTML Table Class CodeIgniter

HTML Table Class The CodeIgniter framework provides an HTML Table Class that is used to develop an auto-generated table using a defined array or result sets of the database table. Loading an HTML Table Class...

8 minutes read.

CodeIgniter ZIP Encoding Class

ZIP Encoding Class The CodeIgniter provides a Zip encoding class that are used to compress a large file into a Zip archives. And this archives files can be downloaded either to your desktop or...

5 minutes read.

CodeIgniter User Agent Class

User Agent Class The CodeIgniter provides a user agent class that helps to identify and collect information about the browser, mobile devices, or robots visiting your site. Besides this, it is also used...

4 minutes read.

Structure of Codeigniter

The File structure of CodeIgniter is divided into three parts: ApplicationSystemuser_guide Application -: As the name represents Application, which contains all the main parts of the project like a controller, libraries, view, models, and others....

3 minutes read.

Installation of CodeIgniter

Before installing CodeIgniter, you need to make sure that the wamp or xampp server in the system is preinstalled. The installation procedure for CodeIgniter is very easy. You can download CodeIgniter by following these...

2 minutes read.