describes::getAllRestrictions

static function getAllRestrictions()
{
	$result = [];
	$rows = static::getList();
	while ($row = $rows->fetch())
	{
		$buttonId = $row['BUTTON_ID'];
		$siteId = $row['SITE_ID'];

		if (!isset($result[$buttonId]))
		{
			$result[$buttonId] = [];
		}

		$result[$buttonId][] = $siteId;
	}
	return $result;
}