How to send Parameters correct: session_id, engagement_time_msec

[joerg-thode]

Hello everybody!
I want to send a purchase event with the session_id of the user. How can i di these?

@ Google:

https://developers.google.com/analytics/devguides/collection/protocol/ga4/sending-events?client_type=gtag&hl=en#required_parameters

{
"client_id": "x",
"events": [
{
"name": "offline_purchase",
"params": {
"engagement_time_msec": "100",
"session_id": "123"
}
}
]
}

@ BR33f V1.2,

this is my code-part, i get no error :-) but it seems not to work

$eventData = new PurchaseEvent();
$eventParamList = [
"engagement_time_msec" => "5000",
"session_id" => $measurementSessionId
];
foreach($eventParamList as $ePKey => $ePValue){
$eventData->setParamValue($ePKey, $ePValue);
}

[w1cerg]

For me it works fine with v.0.1.3.

I've tried this code:

$measurementSessionId = 'test';
$eventData = new \Br33f\Ga4\MeasurementProtocol\Dto\Event\PurchaseEvent();
$eventParamList = [
    "engagement_time_msec" => "5000",
    "session_id" => $measurementSessionId
];
foreach($eventParamList as $ePKey => $ePValue){
    $eventData->setParamValue($ePKey, $ePValue);
}

echo '<pre>';
var_dump($eventData->export());
echo '</pre>';

Result was

array(2) {
  ["name"]=>
  string(8) "purchase"
  ["params"]=>
  object(ArrayObject)#240 (1) {
    ["storage":"ArrayObject":private]=>
    array(2) {
      ["engagement_time_msec"]=>
      string(4) "5000"
      ["session_id"]=>
      string(4) "test"
    }
  }
}

You also can use $eventData->addParam, but it does the same job.

[attila-erdos]

Hello,
I'm also experiencing issues with properly submitting the event. When I use ArrayObject, I don't see any parameters in GA4. However, if I submit the array, then it works fine.

in here: https://github.com/br33f/php-GA4-Measurement-Protocol/blob/master/src/Dto/Event/AbstractEvent.php#L176
if i use this line of code count($preparedParams) == 0 ? new \ArrayObject($preparedParams) : $preparedParams, its works fine so in order to fix this i made my own BaseEvent class and its look like this:

use Br33f\Ga4\MeasurementProtocol\Dto\Event\BaseEvent;

class Ga4BaseEvent extends BaseEvent
{

    public function export(): array
    {
        $preparedParams = [];
        foreach ($this->getParamList() as $parameterName => $parameter) {
            $parameterExportedValue = $parameter->export();
            if (!is_null($parameterExportedValue)) {
                $preparedParams[$parameterName] = $parameterExportedValue;
            }
        }

        return [
            'name' => $this->getName(),
            'params' => count($preparedParams) == 0 ? new \ArrayObject($preparedParams) : $preparedParams,
        ];
    }
}

note: i'm using custom events