Composer升级及镜像问题

composer self-update  #升级
composer --version #查看版本

服务商	镜像地址
阿里云	https://mirrors.aliyun.com/composer/
腾讯云	https://mirrors.cloud.tencent.com/composer/
华为云	https://repo.huaweicloud.com/repository/php/

composer config -g repo.packagist composer https://packagist.org

设置镜像也用如上命令，记得把后面的地址改为相应的镜像地址。