Fatal error: Call to undefined function mysqli_connect()

Question

For 2 days now I\'m trying to solve this, but unfortunately no result. Let me tell you my story about the problem. I\'ve bulid an application on a site, and the application

Answer 1

I followed below link to fix this problem. Make sure to enable following Module.
php -r 'phpinfo();' | grep -i mysqli
Link : https://askubuntu.com/questions/773601/php-mysqli-extension-in-ubuntu-16-04-not-working-after-upgrade-to-version-7-0-6