Online PHP editor | refs for WvU13

@ 2018-05-30T11:50:03Z

<?php

$a = [];

echo 'isset function:' . PHP_EOL;
var_dump(isset($a['foo']));
var_dump(isset($a['foo']['bar']));

echo PHP_EOL . 'NULL coalesce operator:' . PHP_EOL;
var_dump($a['foo'] ?? false);
var_dump($a['foo']['bar'] ?? false);