Installing CodeIgniter on Ubuntu 20.04

CodeIgniter is a powerful PHP framework designed for web developers to build dynamic and robust web applications. It follows the Model-View-Controller (MVC) architectural pattern, which helps in organizing code, separating business logic from presentation, and promoting code reusability.

To install CodeIgniter on Ubuntu 20.04, follow the steps below:

sudo apt update
sudo apt install apache2 php mysql-server

sudo apt install php-mysql php-xml php-gd php-mbstring

cd /var/www/html/

wget https://codeigniter.com/download

unzip download

mv codeigniter-x.x.x myapp

sudo chown -R www-data:www-data myapp
sudo chmod -R 755 myapp

sudo nano /etc/apache2/sites-available/myapp.conf

    ServerName your_domain
    DocumentRoot /var/www/html/myapp/public
    
    
        Options Indexes FollowSymLinks MultiViews
        AllowOverride All
        Require all granted
    
    
    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

sudo ln -s /etc/apache2/sites-available/myapp.conf /etc/apache2/sites-enabled/

sudo systemctl restart apache2

1. First, make sure you have Apache, PHP, and MySQL installed on your Ubuntu 20.04 server. You can install them using the following command:
2. After installing the required packages, enable the necessary PHP extensions by running:
3. Next, navigate to your web server's document root directory. This is usually located at /var/www/html/. You can use the following command to go to the directory:
4. Download the latest version of CodeIgniter from the official website or use the following command to download it via terminal:
5. Extract the downloaded CodeIgniter package:
6. Rename the extracted folder to your preferred name, for example:
7. Adjust the ownership and permissions of the CodeIgniter files and directories:
8. Finally, configure Apache virtual host to serve your CodeIgniter application. Create a new virtual host file by running:
9. Add the following content to the file, and save it:
10. Enable the virtual host by creating a symbolic link to the sites-enabled directory:
11. Restart Apache for the changes to take effect:

You have successfully installed CodeIgniter on your Ubuntu 20.04 server. You can now access your application by visiting your server's domain or IP address in a web browser.

CodeIgniter provides a flexible and lightweight framework that allows developers to easily build web applications. It includes features like database abstraction, form validation, session management, and various helper functions, making it an ideal choice for developing small to large-scale web projects.

For more information and detailed documentation, you can visit the official CodeIgniter website.