Fixes #46

modules/checkout/commerce_checkout.module

@@ -480,7 +480,7 @@ function commerce_checkout_pages() {
       }
     }
 
-    uasort($checkout_pages, 'drupal_sort_weight');
+    backdrop_sort($checkout_pages);
 
     // Initialize the previous and next pages.
     $previous_page_id = NULL;
@@ -623,7 +623,7 @@ function commerce_checkout_panes($conditions = array(), $skip_saved_data = FALSE
     }
 
     // Sort the panes by their weight value.
-    uasort($checkout_panes, 'drupal_sort_weight');
+    backdrop_sort($checkout_panes);
   }
 
   // Apply conditions to the returned panes if specified.

modules/line_item/commerce_line_item.module

@@ -1591,7 +1591,7 @@ function commerce_line_item_summary_links() {
     backdrop_alter('commerce_line_item_summary_link_info', $links);
 
     // Sort the links by weight and return the array.
-    uasort($links, 'drupal_sort_weight');
+    backdrop_sort($links);
   }
 
   return $links;

modules/order/commerce_order.module

@@ -1028,7 +1028,7 @@ function commerce_order_states() {
     // Give other modules a chance to alter the order states.
     backdrop_alter('commerce_order_state_info', $order_states);
 
-    uasort($order_states, 'drupal_sort_weight');
+    backdrop_sort($order_states);
   }
 
   return $order_states;
@@ -1137,7 +1137,7 @@ function commerce_order_statuses($conditions = array()) {
     // Give other modules a chance to alter the order statuses.
     backdrop_alter('commerce_order_status_info', $order_statuses);
 
-    uasort($order_statuses, 'drupal_sort_weight');
+    backdrop_sort($order_statuses);
   }
 
   // Apply conditions to the returned statuses if specified.

modules/payment/commerce_payment.module

@@ -1158,7 +1158,7 @@ function commerce_payment_totals_rows($totals, $order) {
   backdrop_alter('commerce_payment_totals_row_info', $rows, $totals, $order);
 
   // Sort the rows by weight and return the array.
-  uasort($rows, 'drupal_sort_weight');
+  backdrop_sort($rows);
 
   return $rows;
 }

modules/payment/includes/commerce_payment.checkout_pane.inc

@@ -59,7 +59,7 @@ function commerce_payment_pane_checkout_form($form, &$form_state, $checkout_pane
   rules_invoke_all('commerce_payment_methods', $order);
 
   // Sort the payment methods array by the enabling Rules' weight values.
-  uasort($order->payment_methods, 'drupal_sort_weight');
+  backdrop_sort($order->payment_methods);
 
   // Generate an array of payment method options for the checkout form.
   $options = array();

modules/price/commerce_price.module

@@ -604,7 +604,7 @@ function commerce_price_field_formatter_view($entity_type, $entity, $field, $ins
         backdrop_alter('commerce_price_formatted_components', $components, $item, $entity);
 
         // Sort the components by weight.
-        uasort($components, 'drupal_sort_weight');
+        backdrop_sort($components);
 
         // Format the prices for display.
         foreach ($components as $key => &$component) {