composer安装 在Linux下执行以下命令
curl -sS https://getcomposer.org/installer | php
mv composer.phar /usr/local/bin/composer
composer -v
配置使用使用国内镜像
composer config -g repo.packagist composer https://packagist.phpcomposer.com
laravel安装 composer create-project --prefer-dist laravel/laravel laravel
