Approximate the value of number e

e.php

<?php

declare(strict_types=1);

include 'vendor/autoload.php';

https://github.com/loophp/collection
use loophp\collection\Collection;

$multiplication = static function ($value1, $value2) {
    return $value1 * $value2;
};

$addition = static function ($value1, $value2) {
    return $value1 + $value2;
};

$fact = static function (int $number) use ($multiplication) {
    return Collection::range(1, $number + 1)
        ->reduce(
            $multiplication,
            1
        );
};

$e = static function (int $value) use ($fact): float {
    return $value / $fact($value);
};

$number_e_approximation = Collection::times(INF, $e)
    ->until(static function (float $value): bool {return $value < 10 ** -12;})
    ->reduce($addition);

var_dump($number_e_approximation); // 2.718281828459