second iteration makes other format in array laravel code example

Example 1: collection laravel filter

$collection = collect([1, 2, 3, 4]);

$filtered = $collection->filter(function ($value, $key) {
    return $value > 2;
});

$filtered->all();

// [3, 4]

Example 2: laravel pluck

$users = Users::pluck('name','email');
dd($users);