composer_installer.sh

#!/bin/sh

EXPECTED_SIGNATURE=$(wget https://composer.github.io/installer.sig -O - -q)
echo $EXPECTED_SIGNATURE
php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
ACTUAL_SIGNATURE=$(php -r "echo hash_file('SHA384', 'composer-setup.php');")

if [ "$EXPECTED_SIGNATURE" = "$ACTUAL_SIGNATURE" ]
then
	php composer-setup.php
	RESULT=$?
	rm composer-setup.php
	mv composer.phar /usr/local/bin/composer
	composer global require "hirak/prestissimo:^0.3"
	exit $RESULT
else
	>&2 echo 'ERROR: Invalid installer signature'
	rm composer-setup.php
	exit 1
fi