/**
* Returns the instance of the API.
* @return VPSNET
*/
public static function getInstance($username = '', $_auth_api_key = '', $proxy = '')
{
if (!isset(self::$instance)) {
$c = __CLASS__;
self::$instance = new $c();
self::$instance->_auth_name = $username;
self::$instance->_auth_api_key = $_auth_api_key;
if (strlen($proxy) > 0) {
self::$instance->_proxy = $proxy;
}
if (strlen($username) == 0 || strlen($_auth_api_key) == 0) {
trigger_error('Singleton has been called for the first time and a username or API Key has not been set.', E_USER_ERROR);
}
self::$instance->_initCurl();
}
return self::$instance;
}
