Answer 1, authority 100%
php.ini
uncomment the library extension
Small explanations. In a similar error, I came to the conclusion that it is worth removing the semicolon from the line
; extension = php_curl.dll
that is
- check if curl library is installed
- configure php.ini by uncommenting the line above
Answer 2
apt-get install php5-curl
php5enmod curl
service apache restart
Answer 3
Your version does not match. The binding is geared towards a newer version of libcurl than the one you have installed.
You can either search the repositories for a more recent libcurl library (well, or build https://curl.haxx.se/download. html ),
or rebuild php-curl, which will be more difficult: pecl