How do I retrieve Stripe Session ID for a connected account? - stripe-payments

Question

I'm using Stripe checkout. I create the session and process the charge. On success, I have the session id. I want to retrieve the session object for the connected account. (This works fine for a charge to my standard account, but fails when for retrieving the session for the connected account).
For reference, here's the PHP code for creating the session before the charge:
\Stripe\Stripe::setApiKey($Skey);
$session = \Stripe\Checkout\Session::create([
'customer_email' => $Email,
'payment_method_types' => ['card'],
'line_items' => $itms,
'payment_intent_data' => [
'description' => $Web_Short_Name . '*' .$Transaction_ID,
'application_fee_amount' => $Fee,
'metadata' => ['Transaction_ID' => $Transaction_ID],
],
'success_url' => 'https://[myweb]/success.php?session_id={CHECKOUT_SESSION_ID}',
'cancel_url' => 'https://[myweb]/cart.php',
],
['stripe_account' => $Stripe_Account] );
}
FIRST ATTEMPT:
$s = $_GET['session_id'];
$stripe = new \Stripe\StripeClient(
['api_key' => '[my secret key'],
['stripe_account' => '[connected account]']
);
$s2=$stripe->checkout->sessions->retrieve($s,[]);
SECOND ATTEMPT:
$s = $_GET['session_id'];
\Stripe\Stripe::setApiKey('[my secret key]');
$stripe = new \Stripe\StripeClient(
'[my secret key]'
);
$s2=$stripe->checkout->sessions->retrieve($s,[]);
Thanks in advance!
Bob
(I've used StackOverflow as a resource for years...but this is my first post).

Answer 1

For connected accounts, you can fill the second parameter of the retrieve function, just like you did when creating the session:
\Stripe\Stripe::setApiKey('<your API key>');
$session = \Stripe\Checkout\Session::retrieve('<the session id>', [
'stripe_account' => '<the id of the connected Stripe account>'
]);

Answer 2

Got what I needed to work. Essentially I was looking for the PaymentIntent object when I got the call to my webhook from Stripe.
Snippet from my checkout webhook:
<?
require __DIR__ . '/vendor/autoload.php';
$payload = #file_get_contents('php://input');
$event = null;
try {
$event = \Stripe\Event::constructFrom(
json_decode($payload, true)
);
} catch(\UnexpectedValueException $e) {
// Invalid payload
http_response_code(400);
exit();
}
// Handle the event
\Stripe\Stripe::setApiKey({YOUR_SECRET_KEY});
$session_id = $event->data->object->id;
switch ($event->type) {
case 'checkout.session.completed':
$checkout = $event->data->object; // contains a \Stripe\PaymentIntent
// Then define and call a method to handle the successful payment intent.
//handleCheckoutSucceeded($checkout);
handleCheckout($db,$Transaction_ID,$session_id,'SUCCEEDED');
?>

Answer 3

\Stripe\Stripe::setApiKey('<your API key>');
$session = \Stripe\Checkout\Session::retrieve('<the session id>',[], [
'stripe_account' => '<the id of the connected Stripe account>'
]);
The second param array should be empty if no other parameters to pass and stripe_account is to be passed in the third array which is for the options array.