Hello Mario,

Find below mentioned code to get the payment key.

$payment_key = $payment->getKey();

Use this code and let me know if you have any issue.

OK it's works, thanks.

Just an issue:

I've add you line code after all as you can see:

if(defined('_JEXEC')===false) die();



if(isset($transaction)){

	$payment    = $transaction->getPayment(PAYPLANS_INSTANCE_REQUIRE);

}

$currency 		= $invoice->getCurrency();

$invoice_key    = $invoice->getKey();

$created_date   = PayplansHelperFormat::date($invoice->getCreatedDate());

$payment 		= $invoice->getPayment();

$payment_key    = $payment->getKey();

If I request an invoice with a payment transaction I download a pdf invoice.
If I request an invoice without a transaction I receive a 500 error.

Is there a way to avoid how can I avoid $payment_key command if there is no a transaction?

Thanks,
Mario

Another question: where I can fount payment_key in mysql database?
In which table I can found it with a query?

Thanks,
Mario

Hello Mario,

Update the following line of code

$payment = $invoice->getPayment();

Change this to

$payment = $invoice->getPayment(PAYPLANS_INSTANCE_REQUIRE);

Apply this code and let me know if still issue persist.
Your site's ftp details is not working , please cross them also if still issue is there.