# PHP

# install composer prerequisites
sudo apt install curl php-cli php-mbstring git unzip

# install composer, dependency manager
# project-based, installs dependency in local directory
cd ~
curl -sS https://getcomposer.org/installer -o composer-setup.php

#verify composer package @ https://composer.github.io/pubkeys.html
HASH=<latest hash>

# verify if installation script is safe to run
php -r "if (hash_file('SHA384', 'composer-setup.php') === '$HASH') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"

# install composer as system-wide command
sudo php composer-setup.php --install-dir=/usr/local/bin --filename=composer

#test composer
composer