Element::checkUserReadAccess

static function checkUserReadAccess($parameters)
{
	global $USER;

	$parameters['listId'] = (int)$parameters['listId'];
	$parameters['elementId'] = (int)$parameters['elementId'];

	if($parameters['listId'] == 0 || $parameters['elementId'] == 0)
		return false;

	$userPermission = CListPermissions::CheckAccess(
		$USER,
		$parameters["IBLOCK_TYPE_ID"],
		$parameters['listId']
	);
	if($userPermission < 0)
	{
		return false;
	}
	else if(   $userPermission < CListPermissions::CAN_READ
			&& !CIBlockElementRights::UserHasRightTo($parameters['listId'], $parameters['elementId'], "element_read"))
	{
		return false;
	}

	return true;
}