On the last line 1,10 indicates start at the first record and retrieve 10 more right?  How do I establish how many Inventory Items I have so that I can retrieve them all, setting a higher figure than the amount of records available displays an error.

require_once('Inventory.php');
require_once('Factory.php');
$authorization = json_decode(Factory::GetResponse("Auth/AuthorizeByApplication", "applicationId=0000&applicationSecret=0000&token=0000", "", "https://api.linnworks.net/"));
$views = Inventory::GetInventoryViews($authorization->Token, "https://api.linnworks.net/");
$locations = Inventory::GetStockLocations($authorization->Token, "https://api.linnworks.net/");
$locationIds = array();
$inventoryItems = Inventory::GetInventoryItems($views[0],$locationIds,1,10,$authorization->Token,"https://api.linnworks.net/");

If I try (which is how I interpret the documentation), then I receive an error, so I am obviously missing something fundamental

$InventoryItemsCount = Inventory::GetInventoryItemsCount(true,true,$authorization->Token,"https://api.linnworks.net/");
echo $InventoryItemsCount;

Thanks in advance for the direction and assistance