Sometimes we get the PHP’s curl extension is not installed! error on WordPress.Solution is very handy, simply do the following:
Open SSH
First Install CURL by typing:
apt-get install curl
Then Restart Apache:
service apache restart
Then Install PHP5 CURL:
apt-get install php5-curl
Now it will prompt to install… type y or yes!
Then Restart Apache again and Done!
Now it should be fine!