How to install php7.1 using Apache on Ubuntu operating system

You can run the following commands for installation.

add-apt-repository -y ppa:ondrej/php; apt update -y; apt install -y php7.1 libapache2-mod-php7.1 php7.1-cli php7.1-common php7.1-mbstring php7.1-gd php7.1-intl php7.1-xml php7.1-mysql php7 .1-mcrypt php7.1-zip