1.composer配置阿里雲鏡像
所有項目都會使用該鏡像
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/
取消鏡像
composer config -g --unset repos.packagist
2.將composer版本升級到最新
composer self-update
3.執行診斷命令
composer diagnose
4.清除composer緩存
composer clear
5.項目通過其它源安裝，更新composer.lock文件
composer update --lock
附贈：composer配置中國鏡像地址
composer config -g repo.packagist composer https://packagist.phpcomposer.com
取消中國鏡像
composer config -g repo.packagist composer https://packagist.org
author：趙銳慶