Install php 7.4 on Ubuntu 16/18

php74.sh

sudo apt-get update
sudo apt -y install software-properties-common
sudo add-apt-repository ppa:ondrej/php
sudo apt-get update
sudo apt -y install php7.4
sudo apt-get install -y php7.4-{bcmath,bz2,common,curl,intl,gd,mbstring,mysql,opcache,xml,zip}