- composer global require "squizlabs/php_codesniffer=*"
- sudo ln -s ~/.config/composer/vendor/bin/phpcs /usr/bin/
+ sudo apt-get install -y php-cgi php-cli php-mbstring php-xml zip unzip
+
+ curl -Ss 'https://raw.githubusercontent.com/composer/getcomposer.org/99312bc6306564ac1f0ad2c6207c129b3aff58d6/web/installer' -o /tmp/composer-setup.php
+ if echo 'e0012edf3e80b6978849f5eff0d4b4e4c79ff1609dd1e613307e16318854d24ae64f26d17af3ef0bf7cfb710ca74755a /tmp/composer-setup.php' | sha384sum --check --strict --status; then
+ mkdir -p ~/.local/bin
+ php /tmp/composer-setup.php --install-dir ~/.local/bin --filename composer
+
+ ~/.local/bin/composer global require "squizlabs/php_codesniffer=*"
+ sudo ln -s ~/.config/composer/vendor/bin/phpcs /usr/bin/
+
+ ~/.local/bin/composer global require "phpunit/phpunit=8.*"
+ sudo ln -s ~/.config/composer/vendor/bin/phpunit /usr/bin/
+ else
+ echo 'Installer corrupt. Cannot install composer, php_codesniffer and phpunit.' >&2
+ fi