optional.php

<?php

if (!function_exists('optional')) {
    function optional($instance, $default = null)
    {
        return new class($instance, $default = null)
        {
            private $instance;

            private $default;

            public function __construct($instance, $default = null)
            {
                $this->instance = $instance;
                $this->default = $default;
            }

            public function __get($name)
            {
                return $this->instance->{$name} ?? $this->default;
            }
        };
    }
}