use Br33f\Ga4\MeasurementProtocol\Service;
use Br33f\Ga4\MeasurementProtocol\Dto\Request\BaseRequest;
use Br33f\Ga4\MeasurementProtocol\Dto\Event\ViewItemEvent;
use Br33f\Ga4\MeasurementProtocol\Dto\Parameter\ItemParameter;

// Create service instance
$ga4Service = new Service('MEASUREMENT_PROTOCOL_API_SECRET', 'MEASUREMENT_ID');

// Create base request with required client_id
$baseRequest = new BaseRequest('CLIENT_ID');

// Create Event Data
$viewItemEventData = new ViewItemEvent();
$viewItemEventData
    ->setValue(51.10)
    ->setCurrency('EUR');

// Create Item
$viewedItem = new ItemParameter();
$viewedItem
    ->setItemId('ITEM_ID')
    ->setItemName('ITEM_NAME')
    ->setPrice(25.55)
    ->setQuantity(2);
    
// Add this item to viewItemEventData   
$viewItemEventData->addItem($viewedItem);

// Add event to base request (you can add up to 25 events to single request)
$baseRequest->addEvent($viewItemEventData);

// We have all the data we need. Just send the request.
$ga4Service->send($baseRequest);

use Br33f\Ga4\MeasurementProtocol\Service;
use Br33f\Ga4\MeasurementProtocol\Dto\Request\BaseRequest;
use Br33f\Ga4\MeasurementProtocol\Dto\Event\PurchaseEvent;
use Br33f\Ga4\MeasurementProtocol\Dto\Parameter\ItemParameter;

// Create service instance
$ga4Service = new Service('MEASUREMENT_PROTOCOL_API_SECRET', 'MEASUREMENT_ID');

// Create base request with required client_id
$baseRequest = new BaseRequest('CLIENT_ID');

// Create Event Data
$purchaseEventData = new PurchaseEvent();
$purchaseEventData
    ->setValue(250.00)
    ->setCurrency('USD');

// Create Item
$purchasedItem1 = new ItemParameter();
$purchasedItem1
    ->setItemId('FIRST_ITEM_ID')
    ->setItemName('FIRST_ITEM_NAME')
    ->setPrice(100.00)
    ->setQuantity(2);
    
// Add this item to purchaseEventData
$purchaseEventData->addItem($purchasedItem1);

// You can also fill item data via constructor
$purchaseEventData->addItem(new ItemParameter([
    'item_id' => 'SECOND_ITEM_ID',
    'item_name' => 'SECOND_ITEM_NAME',
    'price' => 50.00,
    'quantity' => 1
]));

// Add event to base request (you can add up to 25 events to single request)
$baseRequest->addEvent($purchaseEventData);

// We have all the data we need. Just send the request.
$ga4Service->send($baseRequest);

use Br33f\Ga4\MeasurementProtocol\Service;
use Br33f\Ga4\MeasurementProtocol\Dto\Request\BaseRequest;
use Br33f\Ga4\MeasurementProtocol\Dto\Event\BaseEvent;

// Create Service and request same as above
// ...

// Create Base Event Data (for example: 'share' event - https://developers.google.com/analytics/devguides/collection/protocol/ga4/reference/events#share)
$eventName = 'share'; 
$anyEventData = new BaseEvent($eventName);
$purchaseEventData
    ->setMethod('Twitter')
    ->setContentType('Post')
    ->setItemId('example_item_id')
    ->setAnyParamYouWish('test'); // means 'any_param_you_wish' is set


// Add event to base request (you can add up to 25 events to single request) and send, same as above
// ...

use Br33f\Ga4\MeasurementProtocol\Service;
use Br33f\Ga4\MeasurementProtocol\Dto\Request\BaseRequest;
use Br33f\Ga4\MeasurementProtocol\Dto\Event\AddToCartEvent;
use Br33f\Ga4\MeasurementProtocol\Dto\Parameter\ItemParameter;

// Create service instance
$ga4Service = new Service('MEASUREMENT_PROTOCOL_API_SECRET', 'MEASUREMENT_ID');

// Create base request with required client_id
$baseRequest = new BaseRequest('CLIENT_ID');

// Create Invalid Event Data
$addToCartEventData = new AddToCartEvent();
$addToCartEventData
    ->setValue(99.99)
    ->setCurrency('SOME_INVALID_CURRENCY_CODE'); // invalid currency code

// addItem
$addToCartEventData->addItem(new ItemParameter([
    'item_id' => 'ITEM_ID',
    'item_name' => 'ITEM_NAME',
    'price' => 99.99,
    'quantity' => 1
]));

// Add event to base request (you can add up to 25 events to single request)
$baseRequest->addEvent($addToCartEventData);

// Instead of sending data to production Measurement Protocol endpoint
// $ga4Service->send($baseRequest); 
// Send data to validation endpoint, which responds with status cude and validation messages.
$debugResponse = $ga4Service->sendDebug($baseRequest);

// Now debug response contains status code, and validation messages if request is invalid
var_dump($debugResponse->getStatusCode()); 
var_dump($debugResponse->getValidationMessages());