public static function get_instance()
{
// If the single instance hasn't been set, set it now.
if (null == self::$instance) {
self::$instance = new self();
}
return self::$instance;
}
public function upgrade_plugin()
{
global $sc_options;
if (null === $sc_options->get_setting_value('sub_upgrade_has_run')) {
include_once SC_SUB_DIR_PATH . 'classes/class-stripe-subscriptions-upgrade.php';
Stripe_Subscriptions_Upgrade::get_instance();
}
$sc_options->add_setting('sub_upgrade_has_run', 1);
}
