Setup Linode - Part 3 upgrade to PHP 7.3

• Part 1 LAMP
• Part 2 Users
• Part 3 Upgrade PHP to 7.3
• Part 4 Apache Enable Mod rewrite
• Part 5 Composer
• Part 6 Virtual Hosts
• Part 7 Let's Encrypt
• Part 8 MySQL
• Part 9 Remote MySQL over SSH
• Part 10 Laravel

Since the lamp stack comes with PHP 7.0 an upgrade is required.

First the packages to the server:

sudo apt install ca-certificates apt-transport-https
wget -q https://packages.sury.org/php/apt.gpg -O- | sudo apt-key add -
echo "deb https://packages.sury.org/php/ stretch main" | sudo tee /etc/apt/sources.list.d/php.list

Next update any updates available

sudo apt update

Install PHP 7.3

sudo apt install php7.3

Install PHP Extensions

sudo apt install php7.3-cli php7.3-common php7.3-curl php7.3-mbstring php7.3-mysql php7.3-xml

Install MBString

sudo apt install php-mbstring

Activate it

sudo phpenmod mbstring

Next install zip and dom

sudo apt install php-zip
sudo apt install php7.3-xml

Enable PHP7.3

sudo a2enmod php7.3

To disable PHP7.0

sudo a2dismod php7.0

Restart Apache2

sudo systemctl restart apache2