PHP code example of dldash / data-transfer-object

1. Go to this page and download the library: Download dldash/data-transfer-object library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

dldash / data-transfer-object example snippets


use Dldash\DataTransferObject\Models\DataTransferObject;

class UserDto extends DataTransferObject
{
    public function __construct(
        public int $userId,
        public string|null $username
    ) {}
}


$request = [
    'userId' => 100,
    'username' => 'admin',
    'emailAddress' => '[email protected]'
];

$dto = UserDto::create($request);


use Dldash\DataTransferObject\Contracts\ValueObjectContract;

class EmailAddress implements ValueObjectContract, JsonSerializable
{
    public function __construct(private string $value)
    {
        if (!filter_var($value, FILTER_VALIDATE_EMAIL)) {
            throw new InvalidArgumentException("Email address [${value}] is not valid.");
        }

        $this->value = strtolower($value);
    }

    public function value(): string
    {
        return $this->value;
    }

    public function jsonSerialize(): string
    {
        return $this->value;
    }
}


use Dldash\DataTransferObject\Models\DataTransferObject;

class OrderDto extends DataTransferObject
{
    public function __construct(
        public int $orderId,
        public EmailAddress $emailAddress
    ) {}
}


$request = [
    'orderId' => 100,
    'emailAddress' => '[email protected]'
];

$dto = OrderDto::create($request);


use Dldash\DataTransferObject\Models\DataTransferObject;

class OrderDto extends DataTransferObject
{
    public function __construct(
        public int $orderId,
        public UserDto $user
    ) {}
}


$request = [
    'orderId' => 100,
    'user' => [
        'userId' => 100,
        'username' => 'admin'
    ]
];

$dto = OrderDto::create($request);


use Dldash\DataTransferObject\Objects\DataTransferObjectCollection;

/** @method ArrayIterator|UserDto[] getIterator() */
class UserDtoCollection extends DataTransferObjectCollection
{
    protected function create(mixed $item): object
    {
        return UserDto::create($item);
    }
}


use Dldash\DataTransferObject\Models\DataTransferObject;

class OrderDto extends DataTransferObject
{
    public function __construct(
        public int $orderId,
        public UserDtoCollection $users
    ) {}
}


$request = [
    'orderId' => 100,
    'users' => [
        [
            'userId' => 100,
            'username' => 'admin'
        ],
        [
            'userId' => 200,
            'username' => null
        ]
    ]
];

$dto = OrderDto::create($request);


use Dldash\DataTransferObject\Objects\Undefined;
use Dldash\DataTransferObject\Models\DataTransferObject;

class OrderDto extends DataTransferObject
{
    public function __construct(
        public int $orderId,
        public string|null|Undefined $name
    ) {}
}


use Dldash\DataTransferObject\Objects\Undefined;

$request = [
    'orderId' => 100
];

$dto = OrderDto::create($request);

if (Undefined::isPresent($dto->name)) {
    // Update this field
}


use Dldash\DataTransferObject\Attributes\SerializedName;
use Dldash\DataTransferObject\Models\DataTransferObject;

class OrderDto extends DataTransferObject
{
    public function __construct(
        #[SerializedName('order_id')]
        public int $id,

        #[SerializedName('order_name')]
        public string $name
    ) {}
}


$request = [
    'order_id' => 100,
    'order_name' => 'Order'
];

$dto = OrderDto::create($request);

echo $dto->id; // 100
echo $dto->name; // Order
echo json_encode($dto); // {"order_id": 100, "order_name": "Order"}