Online PHP editor | refs for KoUGq

@ 2017-07-13T12:46:38Z

<?php

declare(strict_types=1);

if(PHP_MAJOR_VERSION < 7 or PHP_MINOR_VERSION < 1) die();

function testParam(?string $arg){
	var_dump($arg);
}

testParam(null);
testParam("hi");
testParam();