how to install php extension in ubuntu 18.04 code example

Example 1: apt install php

# Update packages lists
sudo apt update

# Install Apache2 (on Ubuntu, mostly it's already installed)
sudo apt install apache2

# Install the latest version of PHP and Apache wrapper
sudo apt install php libapache2-mod-php

# Install some important PHP extensions, you might need to install more later
sudo apt install php-{bcmath,bz2,curl,gd,json,mbstring,mysql,xml,zip}

# Install MySQL server, and remember to run mysql_secure_installation script after that
sudo apt install mysql-server

# Start MySQL service
sudo systemctl start mysql

# Restart Apache service to reload all changes
sudo systemctl restart apache2

Example 2: install php 7.1 on ubuntu 18.04

sudo apt install software-properties-commonsudo add-apt-repository ppa:ondrej/php