Ubuntu 16.04 - Install PHP 7.3, PHP-FPM 7.3

php7-3.md

# Add PHP 7.3 PPA

sudo add-apt-repository ppa:ondrej/php
sudo apt-get update

# Install PHP 7.3 with basic modules 
sudo apt-get install php7.3 php7.3-cli php7.3-common php-pear php7.3-curl php7.3-dev php7.3-gd php7.3-mbstring php7.3-zip php7.3-mysql php7.3-xml php7.3-fpm libapache2-mod-php7.3 php7.3-imagick php7.3-recode php7.3-tidy php7.3-xmlrpc php7.3-intl


# Search specific packages
sudo apt-cache search php7.3

# Or, if you want to check all the PHP modules available in Ubuntu, run:
apt-cache search --names-only ^php

# Change the PHP version - To set PHP 7.0 as the default, run:
update-alternatives --set php /usr/bin/php7.0

# To set PHP 7.2 as the default, run:
update-alternatives --set php /usr/bin/php7.2

# To set PHP 7.3 as the default, run:
update-alternatives --set php /usr/bin/php7.3

# Now change php-fpm socket path in nginx config and restart php-fpm
sudo service php7.3-fpm restart

# Restart nginx
sudo service nginx restart