composer安装yii2

1. 为yii创建文件目录mkdir yii

2.进入yii目录，下载composer.phar

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

3.安装Composer Asset插件

php composer.phar global require "fxp/composer-asset-plugin:1.0.0-beta2"

4.安装高级的应用程序模板

php composer.phar create-project yiisoft/yii2-app-advanced advanced 2.0.0-rc