1、使用命令下载

curl -sS https://getcomposer.org/installer | php

2.下载之后设置环境变量

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

3.修改权限，否则执行会出错

chmod -R 777 /usr/local/bin/composer

4.修改镜像地址为阿里云

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

 

5.验证

composer -v

 

 

安装成功。