Get Parent ID from SKU

Question

<?php 
ini_set('display_errors', 1);
error_reporting(E_ALL);

$_SERVER['MAGE_IS_DEVELOPER_MODE'] = true;
require_once "app/Mage.php";
Mage::app();
umask(0);

try {

    echo('<h1>Completed Order Info</h1>');
    // M100210170 | M100210167 | M100210149 
    $orderId = '10006-L4'; // this is entity id 
    $order = Mage::getSingleton('sales/order')->loadByIncrementId($orderId);

    // To get some basic order details, subtotal, shipping cost, discount, tax and grand total.

    echo "order number: ".$orderId."<br>";
    echo "order subtotal: ".$order->getSubtotal()."<br>";
    echo "shipping: ".$order->getShippingAmount()."<br>";
    echo "grand total: ".$order->getGrandTotal()."<br><br><br>";


    $orderItems = array();
    $getTotal=0;
    foreach($order->getItemsCollection() as $item)
    {
        //$product = Mage::getModel('catalog/product')->load($item->getProductId());
        $parentIds = Mage::getSingleton('catalog/product_type_configurable')->getParentIdsByChild($item->getSku());
        echo "SKU = ".$item->getSku()."<br /># of Items in \$parentIds = ".count($parentIds)."<br />";
        if(count($parentIds)>0) {
            echo "<pre>\$parentIds<br />";
            echo print_r($parentIds);
            echo "</pre>";
        } else {
            echo "no items to return...<hr><br />";
        }

        $row=array();
        $row['sku'] = $item->getSku();
        $row['price'] = $item->getPrice();
        $row['qty_ordered']= (int)$item->getQtyOrdered();
        $row['subtotal']= (int)$row['qty_ordered'] * $row['price'];
        $row['item_total']= $item->getRowTotal();
        $getTotal = $getTotal + floatval(((int)$row['qty_ordered'] * $row['price']));    
        $orderItems[]=$row;
    }
    echo "\$getTotal = ".$getTotal."<br>";
    echo "All items in the order:<br><pre>".print_r($orderItems,true)."</pre><br><br><br>";

} catch (Exception $e) {
        Mage::logException($e);
}

Answer 1

getParentIdsByChild function needs id, not sku.

So try :

$parentIds = Mage::getSingleton('catalog/product_type_configurable')->getParentIdsByChild($item->getId());