How to Install LAMP PHP 5.6 on Ubuntu 18.04 Bionic Easy Guide

Installing

2. 2. Enabling PPA Repo

   Add PHP PPA for Ubuntu GNU/Linux

   Install PHP Repo for Ubuntu

   PHP PPA for Ubuntu

3. 3. Installing LAMP

   Then to Install Complete LAMP Stack.

   sudo apt install apache2 mysql-server php5.6 php5.6-mysql libapache2-mod-php5.6

   If Got “User is Not in Sudoers file” then see: How to Enable sudo

How to Enable Apache2 mod_rewrite Module on Ubuntu.

Enabling Apache2 Rewrite for Ubuntu
Enable Apache2 mod_rewrite