#run through the steps detailed here to install the odbc drivers for Ubuntu 20
https://docs.microsoft.com/en-us/sql/connect/odbc/linux-mac/installing-the-microsoft-odbc-driver-for-sql-server?view=sql-server-ver15#ubuntu17

#then force pecl to use 7.2
sudo pecl -d php_suffix=7.2 install sqlsrv-5.3.0
sudo pecl -d php_suffix=7.2 install pdo_sqlsrv-5.3.0

sudo bash -c 'echo "extension=sqlsrv.so" > /etc/php/7.2/mods-available/sqlsrv.ini'
sudo bash -c 'echo "extension=pdo_sqlsrv.so" > /etc/php/7.2/mods-available/pdo_sqlsrv.ini'

# Link new ini to fpm
sudo bash -c 'ln -s /etc/php/7.2/mods-available/sqlsrv.ini /etc/php/7.2/fpm/conf.d/20-sqlsrv.ini'
sudo bash -c 'ln -s /etc/php/7.2/mods-available/pdo_sqlsrv.ini /etc/php/7.2/fpm/conf.d/30-pdo_sqlsrv.ini'
# Link new ini to cli
sudo bash -c 'ln -s /etc/php/7.2/mods-available/sqlsrv.ini /etc/php/7.2/cli/conf.d/20-sqlsrv.ini'
sudo bash -c 'ln -s /etc/php/7.2/mods-available/pdo_sqlsrv.ini /etc/php/7.2/cli/conf.d/30-pdo_sqlsrv.ini'
sudo service php7.2-fpm restart

sudo phpenmod -v 7.3 sqlsrv pdo_sqlsrv

sudo /etc/init.d/php7.2-fpm restart