Simple class to add Optional type for scalar values.
Before returning value it will always check if value is null.
Additionally to this check you can add your own filter class to check for example for empty strings.

<?php

use Optional\Optional;
use Optional\Filters\ZeroIntFilter;

require_once 'vendor/autoload.php';

$optional = new Optional(rand(0, 1));

printf(
    "value: %s\n",
    $optional
        ->withFilter(new ZeroIntFilter())
        ->orDefault('empty')
);