1. 将json转换为数组

2. 数组中的水合模型

1. Convert json to array

2. Hydrate model from array

$data = '{  
            "unique_id_001":{"name":"John","email":"JD@***.com"},
            "unique_id_002":{"name":"Ken","email":"Ken@***.com"}
          }';
$object = (array)json_decode($data);
$collection = \App\User::hydrate($object);
$collection = $collection->flatten();   // get rid of unique_id_XXX

/*
    Collection {#236 ▼
      #items: array:2 [▼
        0 => User {#239 ▶}
        1 => User {#240 ▶}
      ]
    }
 */
dd($collection);