Add order item details into the order manager table in WooCommerce

shop_order_info_column.php

add_filter( 'manage_edit-shop_order_columns', function($columns) {
	$columns['order_info'] = 'Rendelés infók';
	return $columns;
});

add_action( 'manage_shop_order_posts_custom_column', function( $column ) {
	global $the_order;
	if ( 'order_info' === $column ) {
		echo $the_order->get_billing_email();
		$line_items = $the_order->get_items();
		foreach ( $line_items as $item_id => $item ) {
			$product_object = is_callable( array( $item, 'get_product' ) ) ? $item->get_product() : null;
			?>

			<div>
				<?php echo $item->get_quantity(); ?> x <strong><?php echo esc_html($item->get_name()); ?></strong>
				<?php if ( $product_object ): ?>
					(<?php echo esc_html( $product_object->get_sku() ); ?>)
				<?php endif; ?>
			</div>

			<?php
		}
	}
});