Online PHP editor | refs for 2INk8

<?php declare(strict_types = 1); class HelloWorld { /** * @param mixed $seed */ public static function sayHello($seed): void { print_r((array) $seed); } } HelloWorld::sayHello([0, 1]); HelloWorld::sayHello('test'); HelloWorld::sayHello(null); HelloWorld::sayHello(new \DateTime());