Example of calling Zooz payment gateway and Skypicker payment confirmation endpoint

payment.js

var zoozApi = new zooz.Ext.External({
  isSandbox: !!apiSaveBookingResponse.sandbox, // Force boolean
  uniqueId: config.zoozId
});

var _makePayment = function(bookingData, zoozToken) {
  var paymentRequest = {
    paymentToken: zoozToken,
    email: bookingData.contact.eMail,
    paymentMethod: {
      paymentMethodType: 'CreditCard',
      paymentMethodDetails: {
        cardNumber: bookingData.payment.ccn,
        /*cardHolderName: bookingData.payment.holder,*/
        month: bookingData.payment.expire.month,
        year: '20'+bookingData.payment.expire.year,
        cvvNumber:  bookingData.payment.cvv,
        /*userIdNumber: '123456789'*/
      },
      configuration: {
        rememberPaymentMethod: true
      }
    }
  };


  var deffered = $q.defer();


  var status = _zoozApi.addPaymentMethod(paymentRequest,
    function(addPaymentMethodResponse){
      $.ajax({
        dataType: "json",
        url: 'https://booking-api.skypicker.com/api/v0.1/confirm_payment',
        type: "POST",
        data: {
        "paymentToken": apiSaveBookingResponse['zooz_token'],
        "paymentMethodToken": addPaymentMethodResponse['paymentMethodToken'],
        "booking_id": apiSaveBookingResponse ['booking_id']
      },
        success: function (response) {
          if (parseInt(response.status, 10) === 0) {
            deffered.resolve(response);
          } else {
            deffered.reject(response);
        },
        fail: function (xhr) {
          deffered.reject(xhr);
        }
      });
    },
    function(data){
      deffered.reject(data);
    }
  );

  return deffered.promise;
}

can anyone provide this above implementation only in php to generate 'paymentmethodtoken'?

Should i also include their library? Where to find the zooz library?