PHP5-Curl install error no installation candidate
Try searching for the available version that suits for you with sudo apt-cache search curl | grep php
and then sudo apt-get install php<x>-curl
.
In my case it was php7.0-curl
.
Use sudo apt-get install php5.6-curl
First search for your php version using command php -v and then download the respective version of php(version)-curl.