centos7.7 安装 composer 并且更换为阿里云源

1. 下载 composer-setup.php

php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"

2. php 执行安装

php composer-setup.php

3. 添加全局执行的命令

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

4. 查看安装成功没

composer -V

5.1 全局更换阿里云的源

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

5.2 临时更换成阿里的源

cd 项目目录
composer config repo.packagist composer https://mirrors.aliyun.com/composer/

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