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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Service_Amazon
  * @subpackage Ec2
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * @see Zend_Service_Amazon_Ec2_Abstract
  */
 // require_once 'Zend/Service/Amazon/Ec2/Abstract.php';
 
 /**
  * Allows you to interface with the reserved instances on Amazon Ec2
  *
  * @category   Zend
  * @package    Zend_Service_Amazon
  * @subpackage Ec2
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Service_Amazon_Ec2_Instance_Reserved extends Zend_Service_Amazon_Ec2_Abstract
 {
     /**
      * Describes Reserved Instances that you purchased.
      *
      * @param string|array $instanceId        IDs of the Reserved Instance to describe.
      * @return array
      */
     public function describeInstances($instanceId)
     {
         $params = array();
         $params['Action'] = 'DescribeReservedInstances';
 
         if(is_array($instanceId) && !empty($instanceId)) {
             foreach($instanceId as $k=>$name) {
                 $params['ReservedInstancesId.' . ($k+1)] = $name;
             }
         } elseif($instanceId) {
             $params['ReservedInstancesId.1'] = $instanceId;
         }
 
         $response = $this->sendRequest($params);
 
         $xpath = $response->getXPath();
         $items = $xpath->query('//ec2:reservedInstancesSet/ec2:item');
 
         $return = array();
         foreach($items as $item) {
             $i = array();
             $i['reservedInstancesId'] = $xpath->evaluate('string(ec2:reservedInstancesId/text())', $item);
             $i['instanceType'] = $xpath->evaluate('string(ec2:instanceType/text())', $item);
             $i['availabilityZone'] = $xpath->evaluate('string(ec2:availabilityZone/text())', $item);
             $i['duration'] = $xpath->evaluate('string(ec2:duration/text())', $item);
             $i['fixedPrice'] = $xpath->evaluate('string(ec2:fixedPrice/text())', $item);
             $i['usagePrice'] = $xpath->evaluate('string(ec2:usagePrice/text())', $item);
             $i['productDescription'] = $xpath->evaluate('string(ec2:productDescription/text())', $item);
             $i['instanceCount'] = $xpath->evaluate('string(ec2:instanceCount/text())', $item);
             $i['state'] = $xpath->evaluate('string(ec2:state/text())', $item);
 
             $return[] = $i;
             unset($i);
         }
 
         return $return;
     }
 
     /**
      * Describes Reserved Instance offerings that are available for purchase.
      * With Amazon EC2 Reserved Instances, you purchase the right to launch Amazon
      * EC2 instances for a period of time (without getting insufficient capacity
      * errors) and pay a lower usage rate for the actual time used.
      *
      * @return array
      */
     public function describeOfferings()
     {
         $params = array();
         $params['Action'] = 'DescribeReservedInstancesOfferings';
 
         $response = $this->sendRequest($params);
 
         $xpath = $response->getXPath();
         $items = $xpath->query('//ec2:reservedInstancesOfferingsSet/ec2:item');
 
         $return = array();
         foreach($items as $item) {
             $i = array();
             $i['reservedInstancesOfferingId'] = $xpath->evaluate('string(ec2:reservedInstancesOfferingId/text())', $item);
             $i['instanceType'] = $xpath->evaluate('string(ec2:instanceType/text())', $item);
             $i['availabilityZone'] = $xpath->evaluate('string(ec2:availabilityZone/text())', $item);
             $i['duration'] = $xpath->evaluate('string(ec2:duration/text())', $item);
             $i['fixedPrice'] = $xpath->evaluate('string(ec2:fixedPrice/text())', $item);
             $i['usagePrice'] = $xpath->evaluate('string(ec2:usagePrice/text())', $item);
             $i['productDescription'] = $xpath->evaluate('string(ec2:productDescription/text())', $item);
 
             $return[] = $i;
             unset($i);
         }
 
         return $return;
     }
 
     /**
      * Purchases a Reserved Instance for use with your account. With Amazon EC2
      * Reserved Instances, you purchase the right to launch Amazon EC2 instances
      * for a period of time (without getting insufficient capacity errors) and
      * pay a lower usage rate for the actual time used.
      *
      * @param string $offeringId            The offering ID of the Reserved Instance to purchase
      * @param integer $intanceCount         The number of Reserved Instances to purchase.
      * @return string                       The ID of the purchased Reserved Instances.
      */
     public function purchaseOffering($offeringId, $intanceCount = 1)
     {
         $params = array();
         $params['Action'] = 'PurchaseReservedInstancesOffering';
         $params['OfferingId.1'] = $offeringId;
         $params['instanceCount.1'] = intval($intanceCount);
 
         $response = $this->sendRequest($params);
 
         $xpath = $response->getXPath();
         $reservedInstancesId = $xpath->evaluate('string(//ec2:reservedInstancesId/text())');
 
         return $reservedInstancesId;
     }
 }