Ubuntu and Debian 9

php5.6+7.4-environmet.md

Ubuntu 18.10

sudo add-apt-repository ppa:ondrej/php

Debian 9

sudo apt -y install lsb-release apt-transport-https ca-certificates 
sudo wget -O /etc/apt/trusted.gpg.d/php.gpg https://packages.sury.org/php/apt.gpg
echo "deb https://packages.sury.org/php/ stretch main" | sudo tee /etc/apt/sources.list.d/php7.3.list

sudo apt-get update
sudo apt-get install curl \
                     vim \
                     git \
                     build-essential \
                     php5.6 \
                     php5.6-gd \
                     php5.6-opcache \
                     php5.6-xml \
                     php5.6-xmlrpc \
                     php5.6-xsl \
                     php5.6-curl \
                     php5.6-json \
                     php5.6-mbstring \
                     php5.6-mcrypt \
                     php5.6-mysql \
                     php5.6-readline \
                     php5.6-zip \
                     php7.4 \
                     php7.4-opcache \
                     php7.4-xml \
                     php7.4-xmlrpc \
                     php7.4-xsl \
                     php7.4-curl \
                     php7.4-json \
                     php7.4-mbstring \
                     php7.4-mysql \
                     php7.4-readline \
                     php7.4-zip \
                     php5.6-pgsql php7.4-pgsql \
                     php5.6-gd php7.4-gd \
                     php5.6-intl php7.4-intl php5.6-soap php7.4-soap \
                     php-mongodb php-mongo;

composer global require "laravel/installer"
composer global require "friendsofphp/php-cs-fixer"
composer global require "hirak/prestissimo"