原有环境：Ubuntu14.04+Nginx+PHP5.4-fpm

目标：将PHP-fpm从5.4升级到5.6

1、卸载PHP5.4

sudo apt-get --purge removePHP5-fpm

2、安装PHP5.6-fpm

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:ondrej/PHP
sudo apt-get update
sudo apt-get -y install PHP5.6-fpm PHP5.6-mcrypt PHP5.6-mbstring PHP5.6-curl PHP5.6-cli PHP5.6-MysqL PHP5.6-gd PHP5.6-intl PHP5.6-xsl PHP5.6-zip

3、配置PHP5.6-fpm

sudo vi /etc/PHP/5.6/fpm/pool.d/www.conf

listen = /var/run/PHP5-fpm.sock 改为listen = 127.0.0.1:9000

pm.max_children修改为300

pm.start_servers=10

pm.min_spare_servers=10

pm.max_spare_servers=300

pm.max_requests=10240