How to Install CodeIgniter on CentOS 8


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Installing CodeIgniter on CentOS 8

CodeIgniter is a powerful PHP framework used for building web applications. It follows the MVC pattern (Model-View-Controller) and provides an easy and flexible way to create feature-rich websites. In this tutorial, we will walk through the steps to install CodeIgniter on CentOS 8.

Step 1: Update System Packages

Before installing CodeIgniter, it is recommended to update the system packages to their latest versions. Open a terminal and run the following command:

sudo dnf update -y

Step 2: Install Apache Web Server

CodeIgniter requires a web server to run. Apache is one of the most popular web servers available. Install Apache using the following command:

sudo dnf install httpd -y

Step 3: Install PHP

CodeIgniter is built with PHP, so we need to install PHP and its necessary extensions. Run the following command to install PHP and some commonly used extensions:

sudo dnf install php php-cli php-mysqlnd php-json php-gd php-mbstring php-xml -y

Step 4: Install MariaDB

In order to persist data in your CodeIgniter application, you need to have a database. MariaDB is a popular relational database management system. Install it using the following command:

sudo dnf install mariadb-server -y

Step 5: Install and Configure Composer

Composer is a dependency manager for PHP. It helps in installing and managing package dependencies in your CodeIgniter project. To install Composer, run the following commands:

sudo dnf install curl php-cli php-mbstring git unzip -y curl -sS https://getcomposer.org/installer | sudo php -- --install-dir=/usr/local/bin --filename=composer

Step 6: Download and Configure CodeIgniter

Now it's time to download and configure CodeIgniter. Change to the Apache document root directory:

cd /var/www/html

Download the latest version of CodeIgniter from the official website or use the following command to clone the GitHub repository:

git clone https://github.com/bcit-ci/CodeIgniter.git

Rename the CodeIgniter directory to your desired project name:

mv CodeIgniter myproject

Change the ownership of the project directory to the Apache user:

sudo chown -R apache:apache myproject

Step 7: Enable and Start Services

Enable and start Apache and MariaDB services. Use the following commands:

sudo systemctl enable httpd sudo systemctl start httpd sudo systemctl enable mariadb sudo systemctl start mariadb

Step 8: Configure Database

Create a new database and user for your CodeIgniter application:

sudo mysql CREATE DATABASE mydatabase; CREATE USER 'myuser'@'localhost' IDENTIFIED BY 'mypassword'; GRANT ALL PRIVILEGES ON mydatabase.* TO 'myuser'@'localhost'; FLUSH PRIVILEGES; EXIT;

Step 9: Configure CodeIgniter

Open the CodeIgniter configuration file located at /var/www/html/myproject/application/config/database.php and modify the database settings according to your previously created database and user:

        'hostname' => 'localhost',
        'username' => 'myuser',
        'password' => 'mypassword',
        'database' => 'mydatabase',

Step 10: Access CodeIgniter

Now you can access your CodeIgniter application by opening a web browser and navigating to http://your_server_ip/myproject. If everything is configured correctly, you should see the CodeIgniter welcome page.

Congratulations! You have successfully installed CodeIgniter on CentOS 8. Happy coding!

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