首先參考霹靂神部落格：
https://www.pilishen.com/posts/packages-in...
再分享幾個Composer / Packagist 中國全量映象
https://php.cnpkg.org/(每 60 秒同步一次)
composer config -g repos.packagist composer https://php.cnpkg.org
#或者
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer
#或者
composer config -g repo.packagist composer https://packagist.laravel-china.org然後清空composer快取
composer clearcache