安装Composer # 下载composer.phar curl -sS https://getcomposer.org/installer | php# 把composer.phar移动到环境下让其变成可执行 mv composer.phar /usr/local/bin/composer# 测试 composer -V # 输出：Composer version 1.0-dev (e64470c987fdd6bff03b85eed823eb