Install php7.2 and Laravel5.5 on Ubuntu 16.04

Laravel-Installation.md

Install php7.2 for ubuntu 16.04

sudo apt update && sudo apt upgrade

sudo apt-get install software-properties-common python-software-properties

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

sudo apt update

sudo apt-get install php7.2 php7.2-cli php7.2-common

sudo apt-get install php7.2-curl php7.2-gd php7.2-json php7.2-mbstring php7.2-intl php7.2-mysql php7.2-xml php7.2-zip

php -v

a2enmod php7.2

Reference

Install Laravel5.5 for Linux

From Composer

php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"

php -r "if (hash_file('sha384', 'composer-setup.php') === '93b54496392c062774670ac18b134c3b3a95e5a5e5c8f1a9f115f203b75bf9a129d5daa8ba6a13e2cc8a1da0806388a8') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"

php composer-setup.php

php -r "unlink('composer-setup.php');"

and finally put composer.phar globally composer getting started

mv composer.phar /usr/local/bin/composer

Now, create a laravel project using "Composer Create-Project" - Laravel version 5.5

composer create-project --prefer-dist laravel/laravel BlogApp "5.5.*"

then, run the server

php artisan serve

Aslo this video may help you, Video