setApiVersion() public static method

public static setApiVersion ( string $apiVersion )
$apiVersion string The API version to use for requests.
 /**
  * Bootstrap the application events.
  *
  * @return void
  */
 public function boot()
 {
     /*
      * Load Stripe configuration
      *
      * API keys should be utilizing Laravel's "dot files" to keep them out of source
      * control and making them easily overridable on dev environments
      *
      * Read more: http://laravel.com/docs/configuration#environment-configuration
      */
     $api_key = isset($_ENV['stripe.api_key']) ? $_ENV['stripe.api_key'] : $this->app['config']->get('services.stripe')['api_key'];
     \Stripe\Stripe::setApiKey($api_key);
     // Set API Version (optional)
     $api_version = isset($_ENV['stripe.api_version']) ? $_ENV['stripe.api_version'] : $this->app['config']->get('services.stripe')['api_version'];
     if ($api_version !== null) {
         \Stripe\Stripe::setApiVersion($api_version);
     }
     $publishableKey = isset($_ENV['stripe.publishable_key']) ? $_ENV['stripe.publishable_key'] : $this->app['config']->get('services.stripe')['publishable_key'];
     /*
      * Register blade compiler for the Stripe publishable key.
      */
     $blade = $this->app['view']->getEngineResolver()->resolve('blade')->getCompiler();
     $blade->extend(function ($value, $compiler) use($publishableKey) {
         $matcher = "/(?<!\\w)(\\s*)@stripeKey/";
         return preg_replace($matcher, $publishableKey, $value);
     });
 }
<?php

require_once 'stripe/init.php';
// Set Stripe API Key
\Stripe\Stripe::setApiKey("sk_test_t2dbnO7tLqxiz3MeyAIsLjJQ");
\Stripe\Stripe::setApiVersion("2015-08-07");
$token_id = $_POST['stripeToken'];
// It is generated by client side code
$customer = \Stripe\Customer::create(array("source" => $token_id, "description" => 'description for customer'));
$customer_id = $customer->id;
// Create a charge object to charge a credit or a debit card
$charge = \Stripe\Charge::create(array('customer' => $customer_id, 'amount' => 100, 'currency' => "usd", "description" => 'description for customer'));
 /**
  *
  */
 public function formCapture()
 {
     if (isset($_POST['pride_export'])) {
         Entry::exportToCsv();
         exit;
     }
     if (isset($_POST['edit_outspokane_entry'])) {
         switch ($_POST['form']) {
             case 'festival':
                 $entry = new FestivalEntry($_POST['id']);
                 break;
             case 'cruise':
                 $entry = new CruiseEntry($_POST['id']);
                 break;
             case 'parade':
                 $entry = new ParadeEntry($_POST['id']);
                 break;
             case 'donation':
                 $entry = new Donation($_POST['id']);
                 break;
             case 'flag':
                 $entry = new FlagHandle($_POST['id']);
                 break;
             case 'sponsorship':
                 $entry = new Sponsorship($_POST['id']);
                 break;
             default:
                 $entry = new MurderMysteryEntry($_POST['id']);
         }
         $entry->setEntryYear($_POST['entry_year'])->setOrganization($_POST['organization'])->setFirstName($_POST['first_name'])->setLastName($_POST['last_name'])->setEmail($_POST['email'])->setPhone($_POST['phone'])->setAddress($_POST['address'])->setCity($_POST['city'])->setState($_POST['state'])->setZip($_POST['zip'])->setQty($_POST['qty']);
         if ($_POST['form'] == 'festival') {
             $entry->setEntryTypeId($_POST['entry_type_id'])->setIsCornerBooth($_POST['is_corner_booth'])->setPricePerQty(preg_replace('/[^0-9\\.]/', '', $_POST['price_per_qty']))->setPriceForCornerBooth(preg_replace('/[^0-9\\.]/', '', $_POST['price_for_corner_booth']))->setDescription($_POST['description']);
         } elseif ($_POST['form'] == 'cruise') {
             $entry->setPricePerQty(preg_replace('/[^0-9\\.]/', '', $_POST['price_per_qty']));
         } elseif ($_POST['form'] == 'parade') {
             $entry->setEntryTypes($_POST['parade_entry_type'])->setDescription($_POST['description'])->setFloatParkingSpaces($_POST['float_parking_spaces'])->setFloatParkingSpaceCost(preg_replace('/[^0-9\\.]/', '', $_POST['float_parking_space_cost']))->setNeedsAmpedSound($_POST['needs_amped_sound'])->setGroupSize($_POST['group_size']);
         } elseif ($_POST['form'] == 'murder_mystery') {
             $entry->setIsSponsor($_POST['is_sponsor'])->setPricePerQty(preg_replace('/[^0-9\\.]/', '', $_POST['price_per_qty']))->setIsUpgraded($_POST['is_upgraded'])->setVegetarianQty($_POST['vegetarian_qty']);
         } elseif ($_POST['form'] == 'donation') {
             $entry->setDonationAmount($_POST['donation_amount']);
         } elseif ($_POST['form'] == 'flag') {
             $entry->setMessage($_POST['message'])->setColor($_POST['color']);
         } elseif ($_POST['form'] == 'sponsorship') {
             $entry->setPosition($_POST['position'])->setLocalPosition($_POST['local_position'])->setAmount($_POST['amount'])->setUrl($_POST['url'])->setLevel($_POST['level'])->setLocalFirstName($_POST['local_first_name'])->setLocalLastName($_POST['local_last_name'])->setLocalAddress($_POST['local_address'])->setLocalCity($_POST['local_city'])->setLocalState($_POST['local_state'])->setLocalZip($_POST['local_zip'])->setLocalEmail($_POST['local_email'])->setLocalPhone($_POST['local_phone']);
         }
         $entry->update();
         header('Location:admin.php?page=' . $_POST['return'] . '&action=view&id=' . $entry->getId());
         exit;
     }
     if (isset($_POST['pride_action'])) {
         if (wp_verify_nonce($_POST['_wpnonce'], 'pride-nonce')) {
             if ($_POST['pride_action'] == 'cc') {
                 $parts = explode('-', $_POST['txid']);
                 if (count($parts) == 2) {
                     if (is_numeric($parts[1])) {
                         switch ($_POST['form']) {
                             case 'cruise':
                                 $entry = new CruiseEntry($parts[1]);
                                 $title = 'Pride Cruise';
                                 break;
                             case 'festival':
                                 $entry = new FestivalEntry($parts[1]);
                                 $title = 'Pride Festival Entry';
                                 break;
                             case 'murder_mystery':
                                 $entry = new MurderMysteryEntry($parts[1]);
                                 $title = 'Murder Mystery Ticket';
                                 break;
                             case 'donation':
                                 $entry = new Donation($parts[1]);
                                 $title = 'Donation';
                                 break;
                             case 'flag':
                                 $entry = new FlagHandle($parts[1]);
                                 $title = 'Flag Handle';
                                 break;
                             case 'sponsorship':
                                 $entry = new Sponsorship($parts[1]);
                                 $title = 'Sponsorship';
                                 break;
                             default:
                                 /* 'parade' */
                                 $entry = new ParadeEntry($parts[1]);
                                 $title = 'Pride Parade Entry';
                         }
                         if ($entry->getCreatedAt() !== NULL && isset($_POST['stripeToken']) && strlen($_POST['stripeToken']) > 0) {
                             $stripe_keys = Entry::getStripeKeys();
                             Stripe::setApiKey($stripe_keys['secret']);
                             Stripe::setApiVersion('2016-03-07');
                             try {
                                 /** @var \Stripe\Charge $charge */
                                 $charge = Charge::create(array('amount' => round($entry->getAmountDue() * 100), 'currency' => 'usd', 'source' => $_POST['stripeToken'], 'description' => $entry->getEntryYear() . ' ' . $title));
                                 $entry->setPaidAt(time())->setPaymentMethodId(Entry::PAYMENT_METHOD_CARD)->setPaymentAmount($entry->getAmountDue())->setPaymentConfirmationNumber($charge->id)->update();
                                 header('Location:' . $_POST['_wp_http_referer']);
                                 exit;
                             } catch (Card $e) {
                                 /* card was declined */
                             }
                         }
                     }
                 }
             }
         }
     }
 }