## Composer ~~~php composer create-project laravel/laravel folder_name composer create-project laravel/laravel folder_name --prefer-dist "5.8.*" composer install composer install --prefer-dist composer update composer update package/name composer dump-autoload [--optimize] composer self-update composer require [options] [--] [vendor/packages]... // 全局安装 composer require global vendor/packages // 罗列所有扩展包括版本信息 composer show ~~~