groupBy() публичный Метод

Group an associative array by a field or Closure value.
public groupBy ( callable | string $groupBy ) : Collection
$groupBy callable | string
Результат Collection
Документация по классу Collection
Пример #1
0
 public function testGroupByAttribute()
 {
     $data = new Collection(array(array('rating' => 1, 'name' => '1'), array('rating' => 1, 'name' => '2'), array('rating' => 2, 'name' => '3')));
     $result = $data->groupBy('rating');
     $this->assertEquals(array(1 => array(array('rating' => 1, 'name' => '1'), array('rating' => 1, 'name' => '2')), 2 => array(array('rating' => 2, 'name' => '3'))), $result->toArray());
 }