AggregateException example

$results[$idx] = $value;
                if (count($results) >= $count) {
                    $p->resolve(null);
                }
            },
            function D$reason) use (&$rejections): void {
                $rejections[] = $reason;
            }
        )->then(
            function D) use (&$results, &$rejections, $count) {
                if (count($results) !== $count) {
                    throw new AggregateException(
                        'Not enough promises to fulfill count',
                        $rejections
                    );
                }
                ksort($results);

                return array_values($results);
            }
        );
    }