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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.
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
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
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
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
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
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
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
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;
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', [...]
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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