$collection = collect([
    'name' => 'John',
    'age' => 30,
    'city' => 'Bangkok'
]);

// ดึงค่าตาม key
$name = $collection->get('name'); // 'John'
$age = $collection->get('age'); // 30

$collection = collect(['name' => 'John']);

// ใช้ค่า default
$country = $collection->get('country', 'Thailand'); // 'Thailand'

// หรือใช้ Closure
$country = $collection->get('country', function() {
    return 'Default Country';
});

$data = collect([
    'name' => 'John',
    'age' => 30,
    'city' => 'Bangkok',
    'country' => 'Thailand'
]);

// ดึงเฉพาะบาง keys
$subset = $data->only(['name', 'city']);
// ['name' => 'John', 'city' => 'Bangkok']

$apiResponse = collect($response->json());

$userId = $apiResponse->get('user.id');
$userName = $apiResponse->get('user.name', 'Guest');
$email = $apiResponse->get('user.email', '[email protected]');

$products = collect([
    (object)['id' => 1, 'name' => 'iPhone', 'price' => 30000],
    (object)['id' => 2, 'name' => 'Samsung', 'price' => 28000],
    (object)['id' => 3, 'name' => 'OPPO', 'price' => 15000],
]);

// get() ใช้กับ numeric index ได้เช่นกัน
$firstProduct = $products->get(0); // (object)['id' => 1, ...]
$secondProduct = $products->get(1); // (object)['id' => 2, ...]

$collection = collect(['name' => 'John']);

// ตรวจสอบก่อนดึง
if ($collection->has('email')) {
    $email = $collection->get('email');
} else {
    $email = 'not provided';
}