一、 安装Composer

curl -sS https://getcomposer.org/installer | php

改为全局可用

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

二、切换国内镜像

composer config -g repos.packagist composer https://php.cnpkg.org
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/   //composer设置成阿里云镜像

composer config -g --unset repos.packagist    //取消设置

三、安装 Laravel

composer global require laravel/installer

四、创建 Laravel 项目

通过Composer创建一个Laravel项目

composer create-project --prefer-dist laravel/laravel myproject

若想指定版本，则改为

composer create-project --prefer-dist laravel/laravel=5.5.* myproject