/**
* The singleton method.
*
* @return Muut_Developer_Subscription The instance.
* @author Paul Hughes
* @since 3.0
*/
public static function instance()
{
if (!is_a(self::$instance, __CLASS__)) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Initializes the Developer Subscription class.
*
* @return void
* @author Paul Hughes
* @since 3.0
*/
public function initDeveloperSubscription()
{
$class = 'Muut_Developer_Subscription';
if (!in_array($class, $this->alreadyInit) && muut()->getOption('subscription_api_key', '') && muut()->getOption('subscription_secret_key', '')) {
require_once muut()->getPluginPath() . 'lib/subscriber/developer-subscription.class.php';
if (class_exists($class)) {
Muut_Developer_Subscription::instance();
}
$this->alreadyInit[] = $class;
}
}