下载安装脚本 － composer-setup.php － 到当前目录

php -r "copy('https://install.phpcomposer.com/installer', 'composer-setup.php');"

执行安装过程

php composer-setup.php

composer.phar 文件移动到 /usr/local/bin/ 目录

sudo mv composer.phar /usr/local/bin/composer

切换阿里云镜像

composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/

更新 composer

composer selfupdate

阿里云的composer镜像源

composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/

腾讯云的composer镜像源

composer config -g repo.packagist composer https://mirrors.cloud.tencent.com/composer/