added getPaymentNotification for notification API 1.3

Author: edavism

src/Khipu.php

@@ -137,6 +137,7 @@ public static function getAllServicesName() {
       'PaymentStatus' => TRUE,
       'UpdatePaymentNotificationUrl' => TRUE,
       'ReceiverBanks' => TRUE,
+      'GetPaymentNotification' => TRUE,
     );
   }
 

src/KhipuService/KhipuServiceGetPaymentNotification.php

@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * (c) Emilio Davis <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+require_once 'KhipuService.php';
+
+/**
+ * Servicio GetPaymentNotification extiende de KhipuService
+ *
+ * Este servicio consulta una notificacion de pago
+ */
+class KhipuServiceGetPaymentNotification extends KhipuService {
+  /**
+   * Iniciamos el servicio
+   */
+  public function __construct($receiver_id, $secret) {
+    parent::__construct($receiver_id, $secret);
+    // Asignamos la url del servicio
+    $this->apiUrl = Khipu::getUrlService('GetPaymentNotification');
+    $this->data = array(
+	          'notification_token'  => '',
+		      );
+  }
+
+  /**
+   * Método que consulta por la notificacion de pago
+   */
+  public function consult() {
+    $string_data = $this->dataToString();
+
+    $data_to_send = array(
+      'hash' => $this->doHash($string_data),
+      'receiver_id' => $this->receiver_id,
+      'notification_token' => $this->data['notification_token'],
+    );
+    $data_to_send['agent'] = $this->agent;
+    $ch = curl_init();
+    curl_setopt($ch, CURLOPT_URL, $this->apiUrl);
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+    curl_setopt($ch, CURLOPT_POST, TRUE);
+    curl_setopt($ch, CURLOPT_POSTFIELDS, $data_to_send);
+    $output = curl_exec($ch);
+    $info = curl_getinfo($ch);
+    curl_close($ch);
+
+    return $output;
+  }
+
+  protected function dataToString() {
+    $string = '';
+    $string .= 'receiver_id='         . $this->receiver_id;
+    $string .= '&notification_token=' . $this->data['notification_token'];
+    return trim($string);
+  }
+}