SHELL

composer install global

composer global require --dev phpstan/phpstan

composer global require --dev phpstan/extension-installer && 
composer global require --dev phpstan/phpstan-beberlei-assert

composer global require --dev szepeviktor/phpstan-wordpress

composer install global

php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('sha384', 'composer-setup.php') === '55ce33d7678c5a611085589f1f3ddf8b3c52d662cd01d4ba75c0ee0459970c2200a51f492d557530c71c15d8dba01eae') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
php composer-setup.php --install-dir=/usr/local/sbin/ --filename=composer
php -r "unlink('composer-setup.php');"

composer global install

mv composer.phar /usr/local/bin/composer