How to Install Composer with PHP

 Composer is the standard tool for managing PHP dependencies. It automates library installation, enforces version constraints, and helps organize autoloading, making it an essential part of modern PHP development. Whether you're building with frameworks like Laravel, Symfony, or Slim, Composer ensures consistency across environments and simplifies dependency resolution.
_____________________________________________________________________________________________________________
Testing Environment: Ubuntu 24.04.1 LTS       Hostname -          ip Address - 
_____________________________________________________________________________________________________________
apt update ; apt install build-essential net-tools curl git software-properties-common 

sudo apt install php-cli php-zip php-curl -y
cd ~
curl -sS https://getcomposer.org/installer -o /tmp/composer-setup.php
HASH=`curl -sS https://composer.github.io/installer.sig`

echo $HASH

php -r "if (hash_file('SHA384', '/tmp/composer-setup.php') === '$HASH') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"

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

composer
__________________________________________________________________________________________________________________