#sudo add-apt-repository ppa:ondrej/php
#sudo apt-get install software-properties-common python-software-properties
#sudo apt-get update
#sudo apt-get install php7.1 php7.1-common
#sudo apt-get install php7.1-curl php7.1-xml php7.1-zip php7.1-gd php7.1-mysql php7.1-mbstring