PHP Composer is a dependency manager for PHP, allowing you to manage libraries and packages for your PHP projects efficiently. In this guide, we will walk through the steps to install PHP Composer on Rocky Linux 8.

Step 1: Update Your System

Start by ensuring your system is up to date:

sudo dnf update -y

Step 2: Install PHP and Required Extensions

Before installing Composer, you need to have PHP and some required extensions installed. You can install PHP by running:

sudo dnf install php php-cli php-mbstring unzip -y

Step 3: Download Composer Installer

Download the Composer installer using PHP:

php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"

Step 4: Verify the Installer

It is good practice to verify the installer to ensure its integrity. You can do this by comparing the SHA-384 hash:

php -r "if (hash_file('sha384', 'composer-setup.php') === '2e9b0e5...') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"

Make sure to replace 2e9b0e5... with the latest hash from the Composer website.

Step 5: Install Composer

Once verified, run the installer:

php composer-setup.php --install-dir=/usr/local/bin --filename=composer

Step 6: Verify Composer Installation

To confirm that Composer was installed successfully, run:

composer --version

You should see the version of Composer displayed.

Step 7: Update Composer (Optional)

To ensure you have the latest version of Composer, you can update it using:

composer self-update

Conclusion

You have successfully installed PHP Composer on Rocky Linux 8. This powerful tool will help you manage your PHP project dependencies efficiently.

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