Now install PHP-FPM 7.1 with all extensions needed.

sudo apt install php7.3-fpm  php7.3-curl php7.3-cli php7.3-mysql php7.3-gd php7.3-xsl php7.3-json php7.3-intl php-pear php7.3-dev php7.3-common php7.3-mbstring php7.3-zip php7.3-soap php7.3-bcmath -y

After the installation is complete, check the PHP version and installed extensions using PHP commands.

php -v<br>php -me

Next, we will configure the php.ini file for the PHP-FPM and PHP-CLI.

Edit the php.ini files using nano

nano /etc/php/7.3/fpm/php.ini<br><code>nano /etc/php/7.3/cli/php.ini

Change the value of those lines as below.

memory_limit = 512M
max_execution_time = 180
zlib.output_compression = On

Save and exit.

or

sed -i "s/memory_limit = .*/memory_limit = 512M/" /etc/php/7.3/fpm/php.ini
sed -i "s/upload_max_filesize = .*/upload_max_filesize = 128M/" /etc/php/7.3/fpm/php.ini
sed -i "s/zlib.output_compression = .*/zlib.output_compression = on/" /etc/php/7.3/fpm/php.ini
sed -i "s/max_execution_time = .*/max_execution_time = 18000/" /etc/php/7.3/fpm/php.ini

sed -i "s/memory_limit = .*/memory_limit = 512M/" /etc/php/7.3/cli/php.ini
sed -i "s/upload_max_filesize = .*/upload_max_filesize = 128M/" /etc/php/7.3/cli/php.ini
sed -i "s/zlib.output_compression = .*/zlib.output_compression = on/" /etc/php/7.3/cli/php.ini
sed -i "s/max_execution_time = .*/max_execution_time = 18000/" /etc/php/7.3/cli/php.ini

update-alternatives –set php /usr/bin/php7.3

https://stackoverflow.com/questions/40419718/how-to-install-php-extension-using-pecl-for-specific-php-version-when-several-p

https://blogs.msdn.microsoft.com/sqlphp/2016/10/10/getting-started-with-php-7-sql-server-and-azure-sql-database-on-linux-ubuntu-with-apache/