Online PHP editor | output for E6ZkW

<?php interface FormatAwareInterface {} class SalesOrderItem implements FormatAwareInterface {} class SalesOrder implements FormatAwareInterface {} interface FormatterInterface { public function format(FormatAwareInterface $entity); } abstract class Formatter { public function format(FormatAwareInterface $entity); } class SalesOrderItemFormatter implements FormatterInterface { public function format(SalesOrderItem $entity) { if ( ! $entity instanceof SalesOrderItem) } } class SalesOrderFormatter implements FormatterInterface { public function format(SalesOrder $entity) {} }