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# Official OpenPayU PHP Library 2.2
The OpenPayU PHP library provides integration access to the PayU Gateway API ver. 2.2
## Dependencies
The following PHP extensions are required:
* cURL
* hash
## Documentation
Full implementation guide [[English](http://developers.payu.com/en/)][[Polish](http://developers.payu.com/)].
To process operations such as:
- [order status update](examples/v2/order/OrderStatusUpdate.php)
- [order retrieve](examples/v2/order/OrderRetrieve.php)
- [order cancel](examples/v2/order/OrderCancel.php)
You will need to provide a parameter called <b>orderId</b>. The value of orderId is your order identifier that is set by PayU
Payment system, and it's used to invoke remote methods.
There are two ways to get orderId:
1. It is present inside the received notification message from PayU Payment System as a result of payment.
2. In the response from method OpenPayU_Order::create.
In both cases you will find orderId using this statement: $response->getResponse()->orderId.
## Installation
### Composer
To install with Composer, simply add the requirement to your composer.json file:
```php
{
"require" : {
"openpayu/openpayu" : "2.2.*"
}
}
```
Then install by running
```php
composer.phar install
```
### Manual installation
Obtain the latest version of openpayu_php SDK with:
```php
git clone https://github.com/PayU/openpayu_php.git
```
## Getting started
If you are using Composer use autoload functionality:
```php
include "vendor/autoload.php";
```
Or simply add this lines anywhere in your application:
```php
require_once 'lib/openpayu.php';
require_once realpath(dirname(__FILE__)) . '/../../config.php';
```
## Configure
To configure OpenPayU environment you must provide a set of mandatory data in config.php file:
```php
//set Environment
OpenPayU_Configuration::setEnvironment('secure');
//set POS ID and Second MD5 Key (from merchant admin panel)
OpenPayU_Configuration::setMerchantPosId('145227');
OpenPayU_Configuration::setSignatureKey('13a980d4f851f3d9a1cfc792fb1f5e50');
//set Oauth Client Id and Oauth Client Secret (from merchant admin panel)
OpenPayU_Configuration::setOauthClientId('145227');
OpenPayU_Configuration::setOauthClientSecret('12f071174cb7eb79d4aac5bc2f07563f');
```
## Cache
OpenPayU library automatically stores OAuth authentication data in the Cache.
OpenPayU library has two classes implemented to manage the Cache:
* `OauthCacheFile` - data is stored in the file system.
This is a default and automatic Cache method which stores the data in `lib/Cache` folder.
**ATTENTION: for security reasons it is recommended to change the Cache folder, so it would not be accessible from the web browser.**
Configuration:
```php
OpenPayU_Configuration::setOauthTokenCache(new OauthCacheFile($directory));
```
`$directory` - absolute path to the data folder; if the parameter is missing, the folder is `lib/Cache`
* `OauthCacheMemcached` - data is stored in Memcached
This method requires Memcached (https://memcached.org/) to be installed on the server along with Memcached PHP module (http://php.net/manual/en/book.memcached.php)
Configuration:
```php
OpenPayU_Configuration::setOauthTokenCache(new OauthCacheMemcached($host, $port, $weight));
```
`$host` - Memcached server address - `localhost` by default
`$port` - Memcached server port - `11211` by default
`$weight` - Memcached server priority - `0` by default
It is possible to implement another method to manage cache. In such a case it needs to implement `OauthCacheInterface`
## Usage
Remember: All keys in "order array" must be in lowercase.
###Creating order using REST API
File with working example: [examples/v2/order/OrderCreate.php](examples/v2/order/OrderCreate.php)
To create an order using REST API in back-end you must provide an Array with order data:
in your controller
```php
$order['continueUrl'] = 'http://localhost/'; //customer will be redirected to this page after successfull payment
$order['notifyUrl'] = 'http://localhost/';
$order['customerIp'] = $_SERVER['REMOTE_ADDR'];
$order['merchantPosId'] = OpenPayU_Configuration::getMerchantPosId();
$order['description'] = 'New order';
$order['currencyCode'] = 'PLN';
$order['totalAmount'] = 3200;
$order['extOrderId'] = '1342'; //must be unique!
$order['products'][0]['name'] = 'Product1';
$order['products'][0]['unitPrice'] = 1000;
$order['products'][0]['quantity'] = 1;
$order['products'][1]['name'] = 'Product2';
$order['products'][1]['unitPrice'] = 2200;
$order['products'][1]['quantity'] = 1;
//optional section buyer
$order['buyer']['email'] = 'dd@ddd.pl';
$order['buyer']['phone'] = '123123123';
$order['buyer']['firstName'] = 'Jan';
$order['buyer']['lastName'] = 'Kowalski';
$response = OpenPayU_Order::create($order);
header('Location:'.$response->getResponse()->redirectUri); //You must redirect your client to PayU payment summary page.
```
### Creating order using HTML form
File with working example: [examples/v2/order/OrderForm.php](examples/v2/order/OrderForm.php)
To create an order using HTML form you must provide an Array with order data:
in your controller
```php
$order['notifyUrl'] = 'http://localhost';
$order['continueUrl'] = 'http://localhost';
$order['customerIp'] = '127.0.0.1';
$order['merchantPosId'] = OpenPayU_Configuration::getMerchantPosId();
$order['description'] = 'New order';
$order['currencyCode'] = 'PLN';
$order['totalAmount'] = 3200;
$order['extOrderId'] = rand(1000, 1000000);
$order['products'][0]['name'] = 'Product1';
$order['products'][0]['unitPrice'] = 1000;
$order['products'][0]['quantity'] = 1;
$order['products'][1]['name'] = 'Product2';
$order['products'][1]['unitPrice'] = 2200;
$order['products'][1]['quantity'] = 1;
$order['buyer']['email'] = 'dd@ddd.pl';
$order['buyer']['phone'] = '123123123';
$order['buyer']['firstName'] = 'Jan';
$order['buyer']['lastName'] = 'Kowalski';
$orderFormData = OpenPayU_Order::hostedOrderForm($order);
```
in your view
```php
<html>
<?php echo $orderFormData; ?>
</html>
```
or just
```php
echo $orderFormData
```
###Retrieving order from OpenPayU
File with working example: [examples/v2/order/OrderRetrieve.php](examples/v2/order/OrderRetrieve.php)
You can retrieve order by its PayU order_id
```php
$response = OpenPayU_Order::retrieve('Z963D5JQR2230925GUEST000P01'); //as parameter use orderId
```
###Cancelling order
File with working example: [examples/v2/order/OrderCancel.php](examples/v2/order/OrderCancel.php)
You can cancel order by its PayU order_id
```php
$response = OpenPayU_Order::cancel('Z963D5JQR2230925GUEST000P01'); //as parameter use orderId
```
###Updating order status
File with working example: [examples/v2/order/OrderStatusUpdate.php](examples/v2/order/OrderStatusUpdate.php)
You can update order status to accept order.
```php
$status_update = array(
"orderId" => 'Z963D5JQR2230925GUEST000P01', //as value use ORDER_ID
"orderStatus" => 'COMPLETED'
);
$response = OpenPayU_Order::statusUpdate($status_update);
```
###Handling notifications from PayU
File with working example: [examples/v2/order/OrderNotify.php](examples/v2/order/OrderNotify.php)
PayU sends requests to your application when order status changes
```php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$body = file_get_contents('php://input');
$data = trim($body);
$response = OpenPayU_Order::consumeNotification($data);
$response->getResponse()->order->status; //NEW PENDING CANCELLED REJECTED COMPLETED WAITING_FOR_CONFIRMATION
header("HTTP/1.1 200 OK");
}
```
###Refund money
File with working example: [examples/v2/refund/RefundCreate.php](examples/v2/refund/RefundCreate.php)
You can create refund to refund money on buyer account
```php
$refund = OpenPayU_Refund::create(
'Z963D5JQR2230925GUEST000P01', //as a value use ORDER_ID
'Money refund', //Description - required
'100' //Amount - If not provided, returns whole transaction, optional
);
```
### Retrieving pay methods from POS
File with working example: [examples/v2/retrieve/RetrievePaymethods.php](examples/v2/retrieve/RetrievePaymethods.php)
You can retrieve pay methods from POS
```php
$response = OpenPayU_Retrieve::payMethods();
```
You can add optional parameter `lang` to `payMethods()`
```php
$response = OpenPayU_Retrieve::payMethods('en');
```
## Contributing
1. Fork it
2. Create your feature branch (`git checkout -b my-new-feature`)
3. Commit your changes (`git commit -am 'Add some feature'`)
4. Push to the branch (`git push origin my-new-feature`)
5. Create new Pull Request