Initialize

$request = new \Iyzipay\Request\CreateCheckoutFormInitializeRequest();
$request->setLocale(\Iyzipay\Model\Locale::TR);
$request->setConversationId("123456789");
$request->setPrice("1");
$request->setPaidPrice("1.2");
$request->setCurrency(\Iyzipay\Model\Currency::TL);
$request->setBasketId("B67832");
$request->setPaymentGroup(\Iyzipay\Model\PaymentGroup::PRODUCT);
$request->setCallbackUrl("https://www.merchant.com/callback");
$request->setEnabledInstallments(array(2, 3, 6, 9));

$buyer = new \Iyzipay\Model\Buyer();
$buyer->setId("BY789");
$buyer->setName("John");
$buyer->setSurname("Doe");
$buyer->setGsmNumber("+905350000000");
$buyer->setEmail("email@email.com");
$buyer->setIdentityNumber("74300864791");
$buyer->setLastLoginDate("2015-10-05 12:43:35");
$buyer->setRegistrationDate("2013-04-21 15:12:09");
$buyer->setRegistrationAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
$buyer->setIp("85.34.78.112");
$buyer->setCity("Istanbul");
$buyer->setCountry("Turkey");
$buyer->setZipCode("34732");

$request->setBuyer($buyer);
$shippingAddress = new \Iyzipay\Model\Address();
$shippingAddress->setContactName("Jane Doe");
$shippingAddress->setCity("Istanbul");
$shippingAddress->setCountry("Turkey");
$shippingAddress->setAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
$shippingAddress->setZipCode("34742");
$request->setShippingAddress($shippingAddress);

$billingAddress = new \Iyzipay\Model\Address();
$billingAddress->setContactName("Jane Doe");
$billingAddress->setCity("Istanbul");
$billingAddress->setCountry("Turkey");
$billingAddress->setAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
$billingAddress->setZipCode("34742");
$request->setBillingAddress($billingAddress);

$basketItems = array();
$firstBasketItem = new \Iyzipay\Model\BasketItem();
$firstBasketItem->setId("BI101");
$firstBasketItem->setName("Binocular");
$firstBasketItem->setCategory1("Collectibles");
$firstBasketItem->setCategory2("Accessories");
$firstBasketItem->setItemType(\Iyzipay\Model\BasketItemType::PHYSICAL);
$firstBasketItem->setPrice("0.3");
$basketItems[0] = $firstBasketItem;

$secondBasketItem = new \Iyzipay\Model\BasketItem();
$secondBasketItem->setId("BI102");
$secondBasketItem->setName("Game code");
$secondBasketItem->setCategory1("Game");
$secondBasketItem->setCategory2("Online Game Items");
$secondBasketItem->setItemType(\Iyzipay\Model\BasketItemType::VIRTUAL);
$secondBasketItem->setPrice("0.5");

$basketItems[1] = $secondBasketItem;
$thirdBasketItem = new \Iyzipay\Model\BasketItem();
$thirdBasketItem->setId("BI103");
$thirdBasketItem->setName("Usb");
$thirdBasketItem->setCategory1("Electronics");
$thirdBasketItem->setCategory2("Usb / Cable");
$thirdBasketItem->setItemType(\Iyzipay\Model\BasketItemType::PHYSICAL);
$thirdBasketItem->setPrice("0.2");
$basketItems[2] = $thirdBasketItem;
$request->setBasketItems($basketItems);

$checkoutFormInitialize = \Iyzipay\Model\CheckoutFormInitialize::create($request, Config::options());

CreateCheckoutFormInitializeRequest request = new CreateCheckoutFormInitializeRequest();
request.Locale = Locale.TR.ToString();
request.ConversationId = "123456789";
request.Price = "1";
request.PaidPrice = "1.2";
request.Currency = Currency.TRY.ToString();
request.BasketId = "B67832";
request.PaymentGroup = PaymentGroup.PRODUCT.ToString();
request.CallbackUrl = "https://www.merchant.com/callback";

List<int> enabledInstallments = new List<int>();
enabledInstallments.Add(2);
enabledInstallments.Add(3);
enabledInstallments.Add(6);
enabledInstallments.Add(9);
request.EnabledInstallments = enabledInstallments;

Buyer buyer = new Buyer();
buyer.Id = "BY789";
buyer.Name = "John";
buyer.Surname = "Doe";
buyer.GsmNumber = "+905350000000";
buyer.Email = "email@email.com";
buyer.IdentityNumber = "74300864791";
buyer.LastLoginDate = "2015-10-05 12:43:35";
buyer.RegistrationDate = "2013-04-21 15:12:09";
buyer.RegistrationAddress = "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1";
buyer.Ip = "85.34.78.112";
buyer.City = "Istanbul";
buyer.Country = "Turkey";
buyer.ZipCode = "34732";
request.Buyer = buyer;

Address shippingAddress = new Address();
shippingAddress.ContactName = "Jane Doe";
shippingAddress.City = "Istanbul";
shippingAddress.Country = "Turkey";
shippingAddress.Description = "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1";
shippingAddress.ZipCode = "34742";
request.ShippingAddress = shippingAddress;

Address billingAddress = new Address();
billingAddress.ContactName = "Jane Doe";
billingAddress.City = "Istanbul";
billingAddress.Country = "Turkey";
billingAddress.Description = "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1";
billingAddress.ZipCode = "34742";
request.BillingAddress = billingAddress;

List<BasketItem> basketItems = new List<BasketItem>();
BasketItem firstBasketItem = new BasketItem();
firstBasketItem.Id = "BI101";
firstBasketItem.Name = "Binocular";
firstBasketItem.Category1 = "Collectibles";
firstBasketItem.Category2 = "Accessories";
firstBasketItem.ItemType = BasketItemType.PHYSICAL.ToString();
firstBasketItem.Price = "0.3";
basketItems.Add(firstBasketItem);

BasketItem secondBasketItem = new BasketItem();
secondBasketItem.Id = "BI102";
secondBasketItem.Name = "Game code";
secondBasketItem.Category1 = "Game";
secondBasketItem.Category2 = "Online Game Items";
secondBasketItem.ItemType = BasketItemType.VIRTUAL.ToString();
secondBasketItem.Price = "0.5";
basketItems.Add(secondBasketItem);

BasketItem thirdBasketItem = new BasketItem();
thirdBasketItem.Id = "BI103";
thirdBasketItem.Name = "Usb";
thirdBasketItem.Category1 = "Electronics";
thirdBasketItem.Category2 = "Usb / Cable";
thirdBasketItem.ItemType = BasketItemType.PHYSICAL.ToString();
thirdBasketItem.Price = "0.2";
basketItems.Add(thirdBasketItem);
request.BasketItems = basketItems;

CheckoutFormInitialize checkoutFormInitialize = CheckoutFormInitialize.Create(request, options);

CreateCheckoutFormInitializeRequest request = new CreateCheckoutFormInitializeRequest();
request.setLocale(Locale.TR.getValue());
request.setConversationId("123456789");
request.setPrice(new BigDecimal("1"));
request.setPaidPrice(new BigDecimal("1.2"));
request.setCurrency(Currency.TRY.name());
request.setBasketId("B67832");
request.setPaymentGroup(PaymentGroup.PRODUCT.name());
request.setCallbackUrl("https://www.merchant.com/callback");

List<Integer> enabledInstallments = new ArrayList<Integer>();
enabledInstallments.add(2);
enabledInstallments.add(3);
enabledInstallments.add(6);
enabledInstallments.add(9);
request.setEnabledInstallments(enabledInstallments);

Buyer buyer = new Buyer();
buyer.setId("BY789");
buyer.setName("John");
buyer.setSurname("Doe");
buyer.setGsmNumber("+905350000000");
buyer.setEmail("email@email.com");
buyer.setIdentityNumber("74300864791");
buyer.setLastLoginDate("2015-10-05 12:43:35");
buyer.setRegistrationDate("2013-04-21 15:12:09");
buyer.setRegistrationAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
buyer.setIp("85.34.78.112");
buyer.setCity("Istanbul");
buyer.setCountry("Turkey");
buyer.setZipCode("34732");
request.setBuyer(buyer);

Address shippingAddress = new Address();
shippingAddress.setContactName("Jane Doe");
shippingAddress.setCity("Istanbul");
shippingAddress.setCountry("Turkey");
shippingAddress.setAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
shippingAddress.setZipCode("34742");
request.setShippingAddress(shippingAddress);

Address billingAddress = new Address();
billingAddress.setContactName("Jane Doe");
billingAddress.setCity("Istanbul");
billingAddress.setCountry("Turkey");
billingAddress.setAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
billingAddress.setZipCode("34742");
request.setBillingAddress(billingAddress);

List<BasketItem> basketItems = new ArrayList<BasketItem>();
BasketItem firstBasketItem = new BasketItem();
firstBasketItem.setId("BI101");
firstBasketItem.setName("Binocular");
firstBasketItem.setCategory1("Collectibles");
firstBasketItem.setCategory2("Accessories");
firstBasketItem.setItemType(BasketItemType.PHYSICAL.name());
firstBasketItem.setPrice(new BigDecimal("0.3"));
basketItems.add(firstBasketItem);

BasketItem secondBasketItem = new BasketItem();
secondBasketItem.setId("BI102");
secondBasketItem.setName("Game code");
secondBasketItem.setCategory1("Game");
secondBasketItem.setCategory2("Online Game Items");
secondBasketItem.setItemType(BasketItemType.VIRTUAL.name());
secondBasketItem.setPrice(new BigDecimal("0.5"));
basketItems.add(secondBasketItem);

BasketItem thirdBasketItem = new BasketItem();
thirdBasketItem.setId("BI103");
thirdBasketItem.setName("Usb");
thirdBasketItem.setCategory1("Electronics");
thirdBasketItem.setCategory2("Usb / Cable");
thirdBasketItem.setItemType(BasketItemType.PHYSICAL.name());
thirdBasketItem.setPrice(new BigDecimal("0.2"));
basketItems.add(thirdBasketItem);
request.setBasketItems(basketItems);

CheckoutFormInitialize checkoutFormInitialize = CheckoutFormInitialize.create(request, options);

var request = {
    locale: Iyzipay.LOCALE.TR,
    conversationId: '123456789',
    price: '1',
    paidPrice: '1.2',
    currency: Iyzipay.CURRENCY.TRY,
    basketId: 'B67832',
    paymentGroup: Iyzipay.PAYMENT_GROUP.PRODUCT,
    callbackUrl: 'https://www.merchant.com/callback',
    enabledInstallments: [2, 3, 6, 9],
    buyer: {
        id: 'BY789',
        name: 'John',
        surname: 'Doe',
        gsmNumber: '+905350000000',
        email: 'email@email.com',
        identityNumber: '74300864791',
        lastLoginDate: '2015-10-05 12:43:35',
        registrationDate: '2013-04-21 15:12:09',
        registrationAddress: 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
        ip: '85.34.78.112',
        city: 'Istanbul',
        country: 'Turkey',
        zipCode: '34732'
    },
    shippingAddress: {
        contactName: 'Jane Doe',
        city: 'Istanbul',
        country: 'Turkey',
        address: 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
        zipCode: '34742'
    },
    billingAddress: {
        contactName: 'Jane Doe',
        city: 'Istanbul',
        country: 'Turkey',
        address: 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
        zipCode: '34742'
    },
    basketItems: [
        {
            id: 'BI101',
            name: 'Binocular',
            category1: 'Collectibles',
            category2: 'Accessories',
            itemType: Iyzipay.BASKET_ITEM_TYPE.PHYSICAL,
            price: '0.3'
        },
        {
            id: 'BI102',
            name: 'Game code',
            category1: 'Game',
            category2: 'Online Game Items',
            itemType: Iyzipay.BASKET_ITEM_TYPE.VIRTUAL,
            price: '0.5'
        },
        {
            id: 'BI103',
            name: 'Usb',
            category1: 'Electronics',
            category2: 'Usb / Cable',
            itemType: Iyzipay.BASKET_ITEM_TYPE.PHYSICAL,
            price: '0.2'
        }
    ]
};

iyzipay.checkoutFormInitialize.create(request, function (err, result) {
    console.log(err, result);
    done();
});

buyer = {
    id: 'BY789',
    name: 'John',
    surname: 'Doe',
    identityNumber: '74300864791',
    email: 'email@email.com',
    gsmNumber: '+905350000000',
    registrationDate: '2013-04-21 15:12:09',
    lastLoginDate: '2015-10-05 12:43:35',
    registrationAddress: 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
    city: 'Istanbul',
    country: 'Turkey',
    zipCode: '34732',
    ip: '85.34.78.112'
}
address = {
    address: 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
    zipCode: '34732',
    contactName: 'John Doe',
    city: 'Istanbul',
    country: 'Turkey'
}

item1 = {
    id: 'BI101',
    name: 'Binocular',
    category1: 'Collectibles',
    category2: 'Accessories',
    itemType: Iyzipay::Model::BasketItemType::PHYSICAL,
    price: '0.3',
    subMerchantKey: 'sub merchant key',
    subMerchantPrice: '0.27'
}
item2 = {
    id: 'BI102',
    name: 'Game code',
    category1: 'Game',
    category2: 'Online Game Items',
    itemType: Iyzipay::Model::BasketItemType::VIRTUAL,
    price: '0.5',
    subMerchantKey: 'sub merchant key',
    subMerchantPrice: '0.42'
}
item3 = {
    id: 'BI103',
    name: 'Usb',
    category1: 'Electronics',
    category2: 'Usb / Cable',
    itemType: Iyzipay::Model::BasketItemType::PHYSICAL,
    price: '0.2',
    subMerchantKey: 'sub merchant key',
    subMerchantPrice: '0.18'
}
request = {
    locale: 'tr',
    conversationId: '123456789',
    price: '1.0',
    paidPrice: '1.0',
    basketId: 'B67832',
    paymentGroup: Iyzipay::Model::PaymentGroup::PRODUCT,
    callbackUrl: 'https://www.merchant.com/callback',
    enabledInstallments: [2,3,6,9],
    currency: Iyzipay::Model::Currency::TRY,
    buyer: buyer,
    billingAddress: address,
    shippingAddress: address,
    basketItems: [item1, item2, item3]
}
checkout_form_initialize = Iyzipay::Model::CheckoutFormInitialize.new.create(request, @options)

request = dict([('locale', 'tr')])
request['conversationId'] = '123456789'
request['price'] = '1'
request['paidPrice'] = '1.2'
request['basketId'] = 'B67832'
request['paymentGroup'] = 'PRODUCT'
request['callbackUrl'] = 'https://www.merchant.com/callback'

buyer = dict([('id', 'BY789')])
buyer['name'] = 'John'
buyer['surname'] = 'Doe'
buyer['gsmNumber'] = '+905350000000'
buyer['email'] = 'email@email.com'
buyer['identityNumber'] = '74300864791'
buyer['lastLoginDate'] = '2015-10-05 12:43:35'
buyer['registrationDate'] = '2013-04-21 15:12:09'
buyer['registrationAddress'] = 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1'
buyer['ip'] = '85.34.78.112'
buyer['city'] = 'Istanbul'
buyer['country'] = 'Turkey'
buyer['zipCode'] = '34732'
request['buyer'] = buyer

address = dict([('address', 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1')])
address['zipCode'] = '34732'
address['contactName'] = 'Jane Doe'
address['city'] = 'Istanbul'
address['country'] = 'Turkey'
request['shippingAddress'] = address
request['billingAddress'] = address

basket_items = []
basket_item_first = dict([('id', 'BI101')])
basket_item_first['name'] = 'Binocular'
basket_item_first['category1'] = 'Collectibles'
basket_item_first['category2'] = 'Accessories'
basket_item_first['itemType'] = 'PHYSICAL'
basket_item_first['price'] = '0.3'
basket_item_first['subMerchantKey'] = 'sub merchant key'
basket_item_first['subMerchantPrice'] = '0.27'
basket_items.append(basket_item_first)

basket_item_second = dict([('id', 'BI102')])
basket_item_second['name'] = 'Game code'
basket_item_second['category1'] = 'Game'
basket_item_second['category2'] = 'Online Game Items'
basket_item_second['itemType'] = 'VIRTUAL'
basket_item_second['price'] = '0.5'
basket_item_second['subMerchantKey'] = 'sub merchant key'
basket_item_second['subMerchantPrice'] = '0.42'
basket_items.append(basket_item_second)

basket_item_third = dict([('id', 'BI103')])
basket_item_third['name'] = 'Usb'
basket_item_third['category1'] = 'Electronics'
basket_item_third['category2'] = 'Usb / Cable'
basket_item_third['itemType'] = 'PHYSICAL'
basket_item_third['price'] = '0.2'
basket_item_third['subMerchantKey'] = 'sub merchant key'
basket_item_third['subMerchantPrice'] = '0.18'
basket_items.append(basket_item_third)

request['basketItems'] = basket_items

checkout_form_initialize = iyzipay.CheckoutFormInitialize()
checkout_form_initialize_response = checkout_form_initialize.create(request, options)

//Request
{
    "locale": "tr",
    "conversationId": "123456789",
    "price": "1.0",
    "basketId": "B67832",
    "paymentGroup": "PRODUCT",
    "buyer": {
        "id": "BY789",
        "name": "John",
        "surname": "Doe",
        "identityNumber": "74300864791",
        "email": "email@email.com",
        "gsmNumber": "+905350000000",
        "registrationDate": "2013-04-21 15:12:09",
        "lastLoginDate": "2015-10-05 12:43:35",
        "registrationAddress": "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1",
        "city": "Istanbul",
        "country": "Turkey",
        "zipCode": "34732",
        "ip": "85.34.78.112"
    },
    "shippingAddress": {
        "address": "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1",
        "zipCode": "34742",
        "contactName": "Jane Doe",
        "city": "Istanbul",
        "country": "Turkey"
    },
    "billingAddress": {
        "address": "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1",
        "zipCode": "34742",
        "contactName": "Jane Doe",
        "city": "Istanbul",
        "country": "Turkey"
    },
    "basketItems": [
        {
            "id": "BI101",
            "price": "0.3",
            "name": "Binocular",
            "category1": "Collectibles",
            "category2": "Accessories",
            "itemType": "PHYSICAL"
        },
        {
            "id": "BI102",
            "price": "0.5",
            "name": "Game code",
            "category1": "Game",
            "category2": "Online Game Items",
            "itemType": "VIRTUAL"
        },
        {
            "id": "BI103",
            "price": "0.2",
            "name": "Usb",
            "category1": "Electronics",
            "category2": "Usb / Cable",
            "itemType": "PHYSICAL"
        }
    ],
    "callbackUrl": "https://www.merchant.com/callback",
    "currency": "TRY",
    "paidPrice": "1.2",
    "enabledInstallments": [
        1,
        2,
        3,
        6,
        9
    ]
}

//Response
{
    "status": "success",
    "locale": "tr",
    "systemTime": 1470731039071,
    "conversationId": "123456789",
    "token": "d9a1d90e-7cfb-4ead-a6ec-34237bac04f0",
    "checkoutFormContent": "<script type=\"text/javascript\">if (typeof iyziInit == 'undefined') {var iyziInit = {currency:'TRY',token:'d9a1d90e-7cfb-4ead-a6ec-34237bac04f0',price:1.20,locale:'tr',baseUrl:'https://sandbox-api.iyzipay.com',registerCardEnabled:true,bkmEnabled:true,userCards:[],force3Ds:false, isSandbox:true, createTag:function(){var iyziCSSTag = document.createElement('link');iyziCSSTag.setAttribute('rel','stylesheet');iyziCSSTag.setAttribute('type','text/css');iyziCSSTag.setAttribute('href','https://sandbox-static.iyzipay.com/checkoutform/css/main.min.css?v=1470731039031');document.head.appendChild(iyziCSSTag);var iyziJSTag = document.createElement('script');iyziJSTag.setAttribute('src','https://sandbox-static.iyzipay.com/checkoutform/js/iyziCheckout.min.js?v=1470731039031');document.head.appendChild(iyziJSTag);}};iyziInit.createTag();}</script>",
    "tokenExpireTime": 1800,
    "paymentPageUrl": "https://sandbox-cpp.iyzipay.com?token=d9a1d90e-7cfb-4ead-a6ec-34237bac04f0&lang=tr"
}