ubuntu16.04配置php5.6

移除默认及已安装的PHP包

sudo dpkg -l | grep php| awk '{print $2}' |tr "\n" " "
sudo apt-get install aptitude
sudo aptitude purge `dpkg -l | grep php| awk '{print $2}' |tr "\n" " "`
添加 PPA
sudo add-apt-repository ppa:ondrej/php

如果不识别该命令:

１　sudo apt-get install python-software-properties

２　sudo apt-get update

3.sudo apt install software-properties-common

4.sudo apt-get update

然后继续上述命令 如果出现卡顿一直回车
安装php5.6
sudo apt-get update
sudo apt-get install php5.6