在执行 composer require xxx 发现始终无法执行成功
执行 composer require -vvv xxx 打印详细信息
发现报错信息如下:
failed to initialize global composer composer could not find the config file
最后发现在系统里有两个 composer 配置，删除掉非安装目录下的环境变量（我这边是C:\Users\Administrator\AppData\Roaming\Composer\vendor\bin
注销电脑，重新执行 composer require -vvv xxx 安装成功
