composer 切换国内源

composer切换源

全局切换

#禁用默认源
composer config -g secure-http false

#修改为阿里云源
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/

#查看是否修改成功
composer config -g -l

#更新composer
composer self-update --2

修改成功