Php – Setting Authentication on Stripe for Users with 3DS cards

i was able to solve my problem

first the root cause was in my check 3DS logic

// Check if 3DS authentication is required
            if ($subscription->latest_invoice->payment_intent->status === 'requires_action' &&
                $subscription->latest_invoice->payment_intent->next_action->type === 'redirect_to_url'
            )

The $subscription->latest_invoice->payment_intent->next_action->type === 'redirect_to_url' output was 'use_stripe_sdk'

hence the error.

now in other to change the 'use_stripe_sdk' to 'redirect_to _url', i reconfirmed the paymentIntent and updated the subscription info

then passed the new output which is now 'redirect_to_url' to the rest of the logic

updated code below

if($_SERVER['REQUEST_METHOD'] == "POST"){
    set_value($_POST);
    
    $token = (isset($_POST['stripeToken'])) ? $_POST['stripeToken'] : null;
    $crad_number = (isset($_POST['crad_number'])) ? $_POST['crad_number'] : null;
    $month = (isset($_POST['month'])) ? $_POST['month'] : null;
    $year = (isset($_POST['year'])) ? $_POST['year'] : null;
    $cvv = (isset($_POST['cvv'])) ? $_POST['cvv'] : null;
    
    // Validation
    $errors = array();
    if(empty($token)){
        $errors[] = 'Token is required';
    }
    if(empty($crad_number)){
        $errors[] = 'Crad Number is required';
    }
    if(empty($month)){
        $errors[] = 'MONTH name is required';
    }
    if(empty($year)){
        $errors[] = 'YEAR is required';
    }
    if(empty($cvv)){
        $errors[] = 'CVV is required';
    }
    if(empty($errors)){
            
        try{
            
             $stripe = new StripeStripeClient('sk_test_key');
            // Create Customer In Stripe
            
            $customer = StripeCustomer::create(array(
                "email" => $email,
                "name" => $membernamedata,
                'source'  => $token,
            ));

            $finalamount = $amount*100;
            
            $paydesc = "Members Directory";

            // Create the subscription with the found product ID
             $subscription = $stripe->subscriptions->create([
                'customer' => $customer,
                'items' => [['price' => $product_id]],
                "currency" => $_currency,
                "description" => $paydesc,
                //'amount' => $finalamount,
                'expand' => ['latest_invoice.payment_intent'],
            ]);

           
                // Conditional Payment Intent Confirmation (for 3DS cases)
            if ($subscription->latest_invoice->payment_intent->status === 'requires_action') {
                $paymentIntent = $stripe->paymentIntents->confirm(
                    $subscription->latest_invoice->payment_intent->id, 
                    ['return_url' => "https://example.com"] 
                );
        
                // Update $subscription with the latest information
                $subscription = $stripe->subscriptions->retrieve($subscription->id, ['expand' => ['latest_invoice.payment_intent']]);
            }


                    
            // Check if 3DS authentication is required
            if ($subscription->latest_invoice->payment_intent->status === 'requires_action' &&
                $subscription->latest_invoice->payment_intent->next_action->type === 'redirect_to_url'
            ) {
                // Redirect the customer to the 3DS authentication page
                $redirectUrl = $subscription->latest_invoice->payment_intent->next_action->redirect_to_url->url; 
                

                    // Perform the redirect
                    header("HTTP/1.1 303 See Other");
                    header("Location: " . $redirectUrl);
                    exit(); 
                
                
            } 

thanks!