Laravel 集合按小时分组

Question

我从 MongoDB 收集：

$collection = DB::connection('test')
        ->collection('test')->get();

集合示例：

{ a: b, c: d, created_at: "2021-01-01 10:10:10" }
{ a: b, c: d, created_at: "2021-01-01 11:10:10" }

是否可以按小时分组收集？ 10..11..12 等

Answer 1

我希望它有效

$array = [
           ['a' => 'b', 'c' => 'd', 'created_at' => '2021-01-01 10:10:10'],
           ['a' => 'b', 'c' => 'd', 'created_at' => '2021-01-01 11:10:10'],
         ];
$collect = collect($array);
$collect = $collect->groupBy(function($collect){
     return date('H',strtotime($collect['created_at']));
});
dd($collect);