static function _init() { //load abstract class st()->load_libs(array('abstract/class-abstract-payment-gateway')); //Load default gateways self::_load_default_gateways(); self::$_payment_gateways = array('st_submit_form' => new STGatewaySubmitform(), 'st_paypal' => new STGatewayPaypal()); add_action('init', array(__CLASS__, '_do_add_gateway_options')); }