To enable the PHP-curl on Linux ubuntu, you need to install the package using the php-curl package. Here you can learn how to enable it, Read more
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. Set the 'ServerName' directive .... Read more
Switching between required PHP version among multiple PHP installed on system in linux ubuntu with respect to the application requirements. Read more