function __construct($id, $po_detail_item, $item_code, $item_description, $qty_recd,
$prev_quantity_inv, $this_quantity_inv, $order_price, $chg_price,
$std_cost_unit, $gl_code, $tax_included)
function __construct($id, $po_detail_item, $item_code, $item_description, $qty_recd,
$prev_quantity_inv, $this_quantity_inv, $order_price, $chg_price,
$std_cost_unit, $gl_code, $tax_included)