安装、启动laravel框架时
执行“composer create-project –prefer-dist laravel/laravel 项目名称”时报错
curl error 28 while downloading https://repo.packagist.org/p2/laravel/frame work.json: OpenSSL
解决：更改镜像位置
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/
