pending customer po grouped by customer

routes/web.php

@@ -96,7 +96,9 @@ Route::group(['middleware' => ['role:admin']], function() {
         })->get();
         $customers = $bookings->groupBy(function($item) {
             return $item->user_id;
-        })->order();
+        })->sortBy(function($item){
+            return count($item);
+        });
         echo "<h1>Total Po Pending Customer Update: <b>".count($bookings)."</b></h1>";
         foreach ($customers as $customer => $bookings) {
             echo "<h3>".$customer."(".count($bookings).")</h3><br>";