sort() публичный Метод

Sort through each item with a callback.
public sort ( Closure $callback ) : Collection
$callback Closure
Результат Collection
Документация по классу Collection
Пример #1
0
 public function testSort()
 {
     $data = new Collection(array(5, 3, 1, 2, 4));
     $data->sort(function ($a, $b) {
         if ($a === $b) {
             return 0;
         }
         return $a < $b ? -1 : 1;
     });
     $this->assertEquals(range(1, 5), array_values($data->all()));
 }