最新版安装composer方法

(1)下载

php -r "readfile('https://getcomposer.org/installer');" | php

(2) 全局安装

将下载好的 Cooposer.phar 移动至 /usr/local/bin改名为 Composer , 这样就实现了全局调用

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

(3)切换镜像

• 国内镜像

composer config -g repo.packagist composer https://packagist.phpcomposer.com

• 阿里云镜像

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

• 切换成原来的镜像

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

(4)使用  

composer update
composer install
composer show