How To Install CodeIgniter on Ubuntu 20.04 LTS

Install CodeIgniter on Ubuntu 20.04

In this tutorial, we will show you how to install CodeIgniter on Ubuntu 20.04 LTS. For those of you who didn’t know, Codeigniter is the powerful PHP framework for rapid development of full-featured applications. The goal of CodeIgniter is to enable you to develop projects much faster without writing code from scratch. It gives you a rich set of libraries for commonly needed tasks, simple interface and logical structure to access these libraries.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you through the step by step installation CodeIgniter on a Ubuntu 20.04 LTS (Focal Fossa) server.

Install CodeIgniter on Ubuntu 20.04 LTS Focal Fossa

Step 1. First, make sure that all your system packages are up-to-date by running these following apt commands in the terminal.

Step 2. Installing a LAMP server.

A Ubuntu 20.04 LAMP server is required. If you do not have LAMP installed, you can follow our guide here.

Step 3. Installing Composer.

Run the following commands to install composer on your Ubuntu system:

Step 4. Create a CodeIgniter Application.

After installed Composer, now we create a Codeigniter 4 application on your system:

Step 5. Configure Database for CodeIgniter.

By default, MariaDB is not hardened. You can secure MariaDB using the mysql_secure_installation script. You should read and below each step carefully which will set a root password, remove anonymous users, disallow remote root login, and remove the test database and access to secure MariaDB.

Configure it like this:

Next, we will need to log in to the MariaDB console and create a database for the CodeIgniter. Run the following command:

This will prompt you for a password, so enter your MariaDB root password and hit Enter. Once you are logged in to your database server you need to create a database for CodeIgniter installation:

Next, you need to edit database configuration:

Step 6. Configure the Codeigniter Application.

Run the following command to edit App.php file in your favourite text editor:

Then, in App.php, update baseURL to the domain name you use for your application:

You may also need to change the timezone for your application by setting the appTimezone variable:

Step 7. Configuring Apache web server for CodeIgniter.

Create a new virtual host directive in Apache. For example, create a new Apache configuration file named ‘codeigniter.conf’ on your virtual server:

Add the following lines:

Now, we can restart the Apache webserver so that the changes take place:

Step 8. Accessing CodeIgniter.

CodeIgniter will be available on HTTP port 80 by default. Open your favourite browser and navigate to or http://your-server-ip and complete the required steps to finish the installation. If you are using a firewall, please open port 80 to enable access to the control panel.

Congratulations! You have successfully installed CodeIgniter. Thanks for using this tutorial for installing CodeIgniter on your Ubuntu 20.04 LTS Focal Fossa system. For additional help or useful information, we recommend you to check the official CodeIgniter website.