how to install php 7.4 in ubuntu 16.04 code example

Example 1: install php 5.6 on ubuntu 18.04

$ sudo add-apt-repository ppa:ondrej/php

Example 2: ubuntu 16 upgrade php 7.0 to 7.4

sudo apt install -y php7.4 php7.4-cli php7.4-common php7.4-fpm