Online PHP editor | output for 6ghsY

<?php declare(strict_types=1); /** * Isolated code */ class Bar { public function add(int $numOne, int $numTwo): int { return $numOne + $numTwo; } } /** * Non-Isolated code */ class Foo { private $bar; public function __construct(Bar $bar) { $this->bar = $bar; } public function addFive(int $base): int { return $this->bar->add($base, 5); } } $bar = new Bar(); $foo = new Foo($bar); echo $foo->addFive(9);