How can I get just the parent item and not the children in an invoice

Question

I'm trying to make our packing slips and invoices more useful, especially when we have bundled products.

How can I show just the parent item and not the children in an invoice?

When I use $order->getAllItems() I get two lines in output:

parent-child sku

child sku

If I use $order->getAllVisibleItems() I only get the parent, which is what I want.

Parent sku

Now invoice->getAllItems with produces the two lines Parent-Child and Child But invoice->getAllVisibleItems with produces no lines

So it will show qty and amt on the invoice twice. not good for customers or packers.

<?php
require_once '../mage1/app/Mage.php';
require_once('Zend/Pdf.php');  
$app = Mage::app();
Mage::register('isSecureArea', true); 

$orderId = '500000555' ;  

$order = Mage::getModel('sales/order')->loadByIncrementId($orderId);

foreach ($order->getAllVisibleItems() as $item){
    echo 'ITEM: ' . $item->getSku() . '<br />';
}
//vs invoice
echo 'Invoice Section <br />' ;

if ($order->hasInvoices()) {
    echo 'Order has invoices'  . '<br />';
foreach ($order->getInvoiceCollection() as $_eachInvoice) {

    foreach ($_eachInvoice->getAllVisibleItems as $invitem){
    //foreach ($_eachInvoice->getAllItems() as $invitem){
        //echo 'Object <br />';
        var_dump(get_object_vars($invitem));
        //print_r($invitem);  echo '<br /><br /><br /><br />';
        echo 'INVOICE ITEM: ' . $invitem->getSku() . '<br />';
        }
    }
} else { echo 'no invoices' ; };
?>

Answer 1

Just Use $invoice->getAllVisibleItems() and for order use $order->getAllVisibleItems()

Just a word of Advise try to use get_class_method, get_class, get_class_vars for getting familiar with a class.