RelatedUsers::extractUserIds

private function extractUserIds(array $entities): array
{
	$result = [];

	foreach ($entities as $entity)
	{
		foreach (array_keys($this->addToResultFields) as $fieldId)
		{
			if (
				isset($entity[$fieldId])
				&& (int)$entity[$fieldId] > 0
				&& !in_array((int)$entity[$fieldId], $result)
			)
			{
				$result[] = (int)$entity[$fieldId];
			}
		}
	}

	return $result;
}