PHP CodeIgniter Tutorials For Developers

I am happy to present you with a sequential list of PHP Codeigniter tutorials I have written over time. I am enormously hopeful that these tutorials will help you learn and develop robust, scalable web applications using the Codeigniter framework. These are listed in an organized way so that you can have a complete guideline for learning. So, what are you waiting for? Sit tight, and let’s get started.

What Is Codeigniter, And Why Use It?

Codeigniter is one of the most popular development frameworks built on the PHP platform. This framework is one of the best products ellislab. I became familiar with it from the beginning of my professional career. Till now, this is the best framework(at least to me), and I count on the following major reasons to love it:

• It follows the MVC design pattern. In software development, Model View Controller(MVC) is currently the most popular pattern.
• Performance matters: In terms of loading speed/performance, it obtains better scores than other PHP-based application frameworks, such as CakePHP and Zend.
• Easy integration support: It gives a very easy way to integrate third-party tools such as libraries/plugins.
• Easy Documentation: Their documentation is simply mind-blowing, actually the best I have experienced.

I hope I have strengthened your intention to learn it. Now, it’s time to see what I have for you.

Exploring The CodeIgniter Tutorials:

I have listed the tutorials in a way so that you can follow them sequentially to read/exercise and make yourself familiar easily over time. Basically, they range from the basic level to the advanced level. Whenever a new tutorial is added to this site, I will add it in the proper place of the following list. So, here are they:

Beginners Guide To CodeIgniter FrameWork:

This tutorial guides you through the process of downloading/installing and setting up a basic controller/view to experience a hello-world application development taste. Follow this if you haven’t used Codeigniter yet and are interested in starting from zero.

CodeIgniter URL Routing Tutorial:

Codeigniter has a very efficient URL structure. But still, sometimes, it may not match your application’s needs. So, it’s good to learn how to use your as-needed URL structure and route requests to your proper controller functions. It’s pretty easy and efficient compared to messing around with access rules.

Working With Forms Library And Helpers:

This Codeigniter tutorial will help you learn to use the form validation library and form helpers to render views with simple PHP functions. Read it now to save time with this integrated support for working with HTML forms and processing submitted data.

Start Using Active Record Class Overview:

So, you have the basic knowledge of controllers and views. Are you looking to dig into some database staff? Well, it’s most straightforward to get started with the active record, which provides a very easy and efficient abstraction of the database layer and helps you avoid unnecessary SQL queries for all regular operations. Of course, you can execute raw queries as well.

Using The Integrated File Upload Library:

In this tutorial, you will learn how to use FileIgniter’s integrated support for file upload functionality efficiently. This will also help you save a decent amount of development time.

CodeIgniter Image Manipulation Tutorial:

Some applications require you to modify the image(s) dynamically with PHP. This tutorial will help you face such situations confidently and implement the basic crop, resize, rotate, and watermark actions very quickly with Codeingiter’s integrated library support.

Codeigniter Pagination Tutorial:

This Codeigniter tutorial will help you understand and implement the pagination functionality in your Codeigniter application and customize it as per your requirements (tutorials show how to integrate the Bootstrap styles). 

CodeIgniter Best Practices:

So, as you are doing fine with the basic development in the Codeigniter framework, you should check out a few best practices as well so that you can be an organized Codeigniter developer from the beginning.

Using Smarty Template Engine With CodeIgniter:

Well, now that you have learned some best practices, it’s time to implement them. You can start by adding the Smarty template engine to your Codeigniter application. It greatly helps your development team’s front-end HTML/CSS coder avoid dealing with PHP tags, etc.

Use Doctrine ORM With CodeIgniter:

So, you love ORM, and as Codeigniter doesn’t have any of its own, you are interested in using doctrine with it. Sure, why not? Go ahead and learn to bind together the two most popular php open-source projects into a single invincible instance.

Working With CodeIgniter Caching:

So, since you have already started building robust, scalable applications, it’s time to enhance them to cope with high traffic and deliver better performance. Yes, we are talking about caching. Go ahead, learn, and implement it.

Using Composer With CodeIgniter:

Well, as a PHP developer, you always want to stay updated with technology growth and take the most out of it. Well, it may be time to get composer support in your codeigniter application then. Though an official version of Codeigniter doesn’t support it yet, you can do some simple tweaks in your application to get the most out of it. Check it out!

Few Bonus CodeIgniter Articles:

You can also have a look at the following Codeigniter tutorials, which will help you strengthen your existing skills in this framework:

1. CodeIgniter 2 Features: If you used to be a Codeigniter 1.x.x version user and are interested in migrating to the 2.x.x version, this article may help you get a basic insight into the new features/changes that you will need to be aware of.
2. Doctrine Model Plugin For CodeIgniter:
   If you are using Doctrine ORM in your CodeIgniter application, this simple plugin will help you reduce the writing of CRUD functionality.
3. CodeIgniter Bundle Project:
   Here is an open-source project just for you. It contains several other libraries integrated into a single bundle, which can be a kick-ass start for your next Codeigniter project.

Your Contribution/Feedback:

I hope the above codeigniter tutorials will help you get a solid start in web application development. I would appreciate your opinion/suggestions on these tutorials so that I can improve them in the future. Please use the Contact Me page to give your opinion. Also, I am open if you wish to write and share your own codeigniter tutorials, which may not be listed here at this moment. Just give me some brief via write on this site, and I will get back to you as soon as I can. Keep in touch. Happy coding 🙂