switch ($opcion) {
case "findItems":
$item = new Item();
print json_encode($item->findItems($_GET["term"]));
break;
case "getItemByName":
$item = new Item();
print json_encode($item->getItemByName($_POST["name"]));
break;
case "getItemByNameWithPrice":
$item = new Item();
print json_encode($item->getItemByNameWithPrice($_POST["idcustomer"], $_POST["name"]));
break;
case "getItemLowestCost":
$item = new Item();
print $item->getLowestCost($_POST["iditem"]);
break;
case "getItemPrice":
$item = new Item();
print $item->getPrice($_POST["idPriceList"], $_POST["iditem"]);
break;
case "getItemQuantity":
$item = new Item();
print $item->getQuantity($_POST["iditem"]);
break;
case "saveInventory":
$item = new Item();
$max = $_POST["max"];
$items = array();
for ($i = 0; $i <= $max; $i++) {
if (isset($_POST["hidItem" . $i]) && $_POST["hidItem" . $i] != "") {
