首先更新PPA源：
vi /etc/apt/sources.list

deb  http://ppa.launchpad.net/apt-fast/stable/ubuntu saucy main
deb-src  http://ppa.launchpad.net/apt-fast/stable/ubuntu saucy main

sudo add-apt-repository ppa:tldm217/tahutek.net
sudo apt-get update
sudo apt-get install apt-fast

1、安装nginx：
$ sudo apt-get update
$ sudo apt-get install nginx

查看版本：
/usr/sbin/nginx -v

2、安装php5.6

添加ppa：

sudo apt-get install -y software-properties-common
sudo add-apt-repository ppa:ondrej/php
sudo apt-get update

查找php对应版本的扩展：
sudo apt-cache search php5.6

开始安装：
sudo apt-get install php5.6-fpm php5.6-mysql php5.6-common php5.6-curl php5.6-cli php5.6-mcrypt php5.6-mbstring php5.6-dom php5.6-gd php5.6-json php-memcached php-memcache php5.6-xml php5.6-zip php-http

php.ini配置文件:
$ sudo vim /etc/php/5.6/fpm/php.ini

nginx配置：

location ~ .php$ {
#include snippets/fastcgi-php.conf;
#With php7.0-cgi alone:
#fastcgi_pass 127.0.0.1:9000;
#With php7.0-fpm:

fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_pass unix:/run/php/php5.6-fpm.sock;
fastcgi_index index.php;
include fastcgi_params;
}

3、安装mysql
sudo apt-get install mysql-server-5.6 mysql-client-5.6
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Ubuntu安装Nginx+PHP5.6+MySQL5.6
https://blog.51cto.com/u_11910656/2171599