The value function returns the value it is given. However, if you pass a closure to the function, the closure will be executed and its returned value will be returned:
<?php $result = value(true);


$result = value(function () {
    return false;
});
<?php     public function dispatchIf($boolean)

    {

        return value($boolean) ? $this->dispatch() : null;

    }
<?php     public function dispatchUnless($boolean)

    {

        return ! value($boolean) ? $this->dispatch() : null;

    }
<?php         if (is_null($value)) {

            $this->event(new CacheMissed($this->getName(), $key));



            $value = value($default);

        } else {

            $this->event(new CacheHit($this->getName(), $key, $value));

        }
<?php         if (is_null($value)) {

            $this->event(new CacheMissed($this->getName(), $key));



            return (isset($keys[$key]) && ! array_is_list($keys)) ? value($keys[$key]) : null;

        }
<?php         $value = $callback();



        $this->put($key, $value, value($ttl, $value));



        return $value;

    }
<?php     {

        if (is_null($callback)) {

            if (empty($array)) {

                return value($default);

            }



            foreach ($array as $item) {
<?php                 return $item;

            }



            return value($default);

        }



        foreach ($array as $key => $value) {
<?php             }

        }



        return value($default);

    }
<?php     public static function last($array, ?callable $callback = null, $default = null)

    {

        if (is_null($callback)) {

            return empty($array) ? value($default) : end($array);

        }



        return static::first(array_reverse($array, true), $callback, $default);
<?php     public static function get($array, $key, $default = null)

    {

        if (! static::accessible($array)) {

            return value($default);

        }



        if (is_null($key)) {
<?php         }



        if (! str_contains($key, '.')) {

            return $array[$key] ?? value($default);

        }



        foreach (explode('.', $key) as $segment) {
<?php             if (static::accessible($array) && static::exists($array, $segment)) {

                $array = $array[$segment];

            } else {

                return value($default);

            }

        }
<?php             return $this->items[$key];

        }



        return value($default);

    }
<?php             return $this->items[$key];

        }



        $this->offsetSet($key, $value = value($value));



        return $value;

    }
<?php                 if ($target instanceof Collection) {

                    $target = $target->all();

                } elseif (! is_iterable($target)) {

                    return value($default);

                }



                $result = [];