ubuntu 安装 php Composer

#进入安装目录
cd /usr/local/bin
#下载并安装
sudo curl -s https://getcomposer.org/installer | sudo php
#添加执行权限
sudo chmod a+x composer.phar
#加入全局命令
mv composer.phar /usr/local/bin/composer 
#查看版本号
composer --version