Online PHP editor | output for sMer1

<?php interface bird { /*function setKind(string $type); function getKind(); function getLocation(); function setLocation(location $location); function flyTo(location $location); function setMelody(string $melody); function singMelody(); // вывод зависит от kind function killBird();*/ function cloneBird(int $count); } class Sparrow implements bird { public function cloneBird(int $count) { echo $count; } } $s = new Sparrow(); var_dump($s);