Online PHP editor | refs for ldrdh

@ 2017-05-28T14:43:58Z

<?php

$array = [
    'false' => false,
    'null' => null,
    'zero' => 0,
    'empty' => '',
];

var_dump(isset($array['false']));
var_dump(isset($array['null']));
var_dump(isset($array['zero']));
var_dump(isset($array['empty']));