I've just installed php7 to my Ubuntu. At first, there was no problem, my web site was working. But suddenly, it started to return Call to undefined function curl_init() error. Now, my pages contain curl codes do not work.

In phpinfo(), it looks Curl is enabled. There were similar questions but none of them handled it in php7. I thought it should be something different than others.

Edit: When I try

php -i | grep curl       

in terminal, it returns

/etc/php/7.0/cli/conf.d/20-curl.ini,
curl

I've had similar problem with curl after upgrade to XX (16.04). After reinstalling curl with:

sudo apt-get install php-curl

And server restart

sudo service apache2 restart

everything went back to normal :)