I am trying to use the new facebook api and it requires libcurl PHP. I used

sudo apt-get install php5-curl
sudo apachectl -k restart

And it didn't work. I get the same error and the phpinfo() page says nothing about libcurl.

The source of this problem is probably that I built some of the tools from source (apache2, php), but then I got bored so installed a lot of the extensions with the package manager. But I'm not exactly how to go about diagnosing the point of failure.

The apt-get install for curl definitely worked, and can be found in

/usr/lib/php5/20060613/curl.so

I think a lot of my confusion stems from not knowing which files go where, and what purpose they have. Any help would be appreciated, and please tell me if I need to provide more information.

edit: The specific error I get is:

Exception: Facebook needs the CURL PHP extension.

from line

if (!function_exists('curl_init')) {
  throw new Exception('Facebook needs the CURL PHP extension.');
}

Ubuntu: 9.10

PHP: 5.2.13

Loaded Configuration File: /etc/php5/apache2/php.ini