1. 前提条件,php版本得> 5.4 D:\phpStudy>php -v PHP 5.5.17 (cli) (built: Sep 16 2014 16:17:50) Copyright (c) 1997-2014 The PHP Group Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies D:\phpStudy> 2. 安装方式,一种是直接下载压缩包,推荐采用composer方式安装,未来的趋势。安装直接确保php已经支持openssl (php.ini)查找Openssl 2.1 下载安装composer , 我的环境是windows的 。 http://getcomposer.org/doc/00-intro.md#installation-nix 附:linux安装方式 [root@mty01 2016-06-03]# curl -sS https://getcomposer.org/installer | php Downloading 1.1.2... Composer successfully installed to: /home/haozi/2016-06-03/composer.phar Use it: php composer.phar Some settings on your