admin/environment/php extension/curl

Windows

To install the curl library on Windows

1. Open the php.ini file found in the php/php.ini folder (older versions of XAMPP use moodle/apache/bin folder)
2. Find the line: extension=php_curl.dll
3. Remove the at the beginning of the line
4. Restart Apache if necessary

Unix

To install the curl library on Unix

1. You need to recompile PHP from source
2. add --with-curl to the command line when you run configure

Ubuntu and Debian

To install the curl library on Ubuntu and Debian

 aptitude install php5-curl

• Restart apache if necessary:

sudo /etc/init.d/apache2 restart 

or possibly

sudo /etc/init.d/apache restart