lamp安装php5.6版

Ubuntu 16.04 comes with PHP7 as the standard, so there are no PHP5 packages

However if you like you can add a PPA to get those packages anyways:

Remove all the stock php packages

List installed php packages with dpkg -l | grep php| awk ‘{print $2}’ |tr “\n” ” ” then remove unneeded packages with sudo aptitude purge your_packages_here or if you want to directly remove them all use :

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

sudo add-apt-repository ppa:ondrej/php
Install your PHP Version

sudo apt-get update
sudo apt-get install php5.6
You can install php5.6 modules too ..

Verify your version

sudo php -v
install Apache2
1 sudo apt install apache2
2 sudo apt-get install libapache2-mod-php
install MySQL
1 sudo apt install mysql-server php5.6-mysql
2 sudo apt-get install mysql-client
3 mysql_secure_installation
install phpmyadmin
1 sudo apt-get install phpmyadmin
2 sudo apt-get install php5.6-mbstring
3 sudo apt-get install php5.6-gettext
4 sudo ln -s /usr/share/phpmyadmin /var/www/html/phpmyadmin
配置phpmyadmin

1 nano /etc/php/5.6/apache2/php.ini
display_errors = On(显示错误日志，出现两次，都要改，不然无效)
extension=php_mbstring.dll (开启mbstring)