ubuntu16.04 64位系統安裝php5.6

1.

 sudo aptitude purge `dpkg -l | grep php| awk '{print $2}' |tr "\n" " "`

查詢卸載已經安裝的php

2.

sudo add-apt-repository ppa:ondrej/php

安裝ppa

3.
sudo apt-get update

sudo apt-get install php5.6

4.

sudo php -v

查看