Sorting orders in backend based on SKU [duplicate] - wordpress

Question

This question already has answers here:
Sorting order items by SKU in Woocommerce
(2 answers)
Closed 2 years ago.
I am trying to sort orders added manually by sku.
I've tried all these codes:
Sort order items by SKU in Woocommerce admin order pages
Sorting order items via a hooked function in WooCommerce
Sorting order items by SKU in Woocommerce email notifications
Underneath code is working to sort by name.
add_filter('woocommerce_order_status_changed', 'sortOrderItemsSKU', 10, 2);
function sortOrderItemsSKU($items, $order) {
uasort( $items,
function( $a, $b ) {
return strcmp( $a['name'], $b['name'] );
}
);
return $items;
}
But when changing to _sku / sku both not working.
function( $a, $b ) {
return strcmp( $a['_sku'], $b['_sku'] );
}
Any help is appreciated.

Answer 1

I did find another solution. It returns the sorted array, but somehow the items in the order aren't being sorted:
add_action( 'woocommerce_order_status_changed', 'process_offline_order', 10, 4 );
function process_offline_order( $order_id, $items, $order, $types = 'line_item' ){
$order = new WC_Order( $order_id );
$items = $order->get_items();
$item_skus = $sorted_items = array();
foreach ( $items as $item_id => $item ) {
$product = wc_get_product( $item['product_id'] );
$product_id = $item->get_variation_id() ? $item->get_variation_id() : $item->get_product_id();
$product = $item->get_product();
$item_skus[$product->get_sku()] = $item_id;
}
ksort($item_skus);
foreach( $item_skus as $keyL => $valueL ){
$sorted_items[$keyL] = $items[$keyL];
$sorted_items[$valueL] = $items[$valueL];
}
return $item_skus;
}
So the problem is probably within this part:
foreach( $item_skus as $keyL => $valueL ){
$sorted_items[$keyL] = $items[$keyL];
$sorted_items[$valueL] = $items[$valueL];
}
return $item_skus;
Any suggestions?