Documentation

Zend_Service_Amazon - Zend_Service

Zend_Service_Amazon

Introduction

Zend_Service_Amazon is a simple API for using Amazon web services. Zend_Service_Amazon has two APIs: a more traditional one that follows Amazon's own API, and a simpler "Query API" for constructing even complex search queries easily.

Zend_Service_Amazon enables developers to retrieve information appearing throughout Amazon.com web sites directly through the Amazon Web Services API. Examples include:

  • Store item information, such as images, descriptions, pricing, and more

  • Customer and editorial reviews

  • Similar products and accessories

  • Amazon.com offers

  • ListMania lists

In order to use Zend_Service_Amazon, you should already have an Amazon developer API key aswell as a secret key. To get a key and for more information, please visit the » Amazon Web Services web site. As of August 15th, 2009 you can only use the Amazon Product Advertising API through Zend_Service_Amazon, when specifying the additional secret key.

Note: Attention
 Your Amazon developer API and secret keys are linked to your Amazon identity, so take appropriate measures to keep them private.

Example #1 Search Amazon Using the Traditional API

In this example, we search for PHP books at Amazon and loop through the results, printing them.

  1. $amazon = new Zend_Service_Amazon('AMAZON_API_KEY', 'US', 'AMAZON_SECRET_KEY');
  2. $results = $amazon->itemSearch(array('SearchIndex' => 'Books',
  3.                                      'Keywords' => 'php'));
  4. foreach ($results as $result) {
  5.     echo $result->Title . '<br />';
  6. }

Example #2 Search Amazon Using the Query API

Here, we also search for PHP books at Amazon, but we instead use the Query API, which resembles the Fluent Interface design pattern.

  1. $query = new Zend_Service_Amazon_Query('AMAZON_API_KEY',
  2.                                        'US',
  3.                                        'AMAZON_SECRET_KEY');
  4. $query->category('Books')->Keywords('PHP');
  5. $results = $query->search();
  6. foreach ($results as $result) {
  7.     echo $result->Title . '<br />';
  8. }

Country Codes

By default, Zend_Service_Amazon connects to the United States ("US") Amazon web service. To connect from a different country, simply specify the appropriate country code string as the second parameter to the constructor:

Example #3 Choosing an Amazon Web Service Country

  1. // Connect to Amazon in Japan
  2. $amazon = new Zend_Service_Amazon('AMAZON_API_KEY', 'JP', 'AMAZON_SECRET_KEY');

Note: Country codes
 Valid country codes are: CA, DE, FR, JP, UK, and US.

Looking up a Specific Amazon Item by ASIN

The itemLookup() method provides the ability to fetch a particular Amazon item when the ASIN is known.

Example #4 Looking up a Specific Amazon Item by ASIN

  1. $amazon = new Zend_Service_Amazon('AMAZON_API_KEY', 'US', 'AMAZON_SECRET_KEY');
  2. $item = $amazon->itemLookup('B0000A432X');

The itemLookup() method also accepts an optional second parameter for handling search options. For full details, including a list of available options, please see the » relevant Amazon documentation.

Note: Image information
 To retrieve images information for your search results, you must set ResponseGroup option to Medium or Large.

Performing Amazon Item Searches

Searching for items based on any of various available criteria are made simple using the itemSearch() method, as in the following example:

Example #5 Performing Amazon Item Searches

  1. $amazon = new Zend_Service_Amazon('AMAZON_API_KEY', 'US', 'AMAZON_SECRET_KEY');
  2. $results = $amazon->itemSearch(array('SearchIndex' => 'Books',
  3.                                      'Keywords' => 'php'));
  4. foreach ($results as $result) {
  5.     echo $result->Title . '<br />';
  6. }

Example #6 Using the ResponseGroup Option

The ResponseGroup option is used to control the specific information that will be returned in the response.

  1. $amazon = new Zend_Service_Amazon('AMAZON_API_KEY', 'US', 'AMAZON_SECRET_KEY');
  2. $results = $amazon->itemSearch(array(
  3.     'SearchIndex'   => 'Books',
  4.     'Keywords'      => 'php',
  5.     'ResponseGroup' => 'Small,ItemAttributes,Images,SalesRank,Reviews,' .
  6.                        'EditorialReview,Similarities,ListmaniaLists'
  7.     ));
  8. foreach ($results as $result) {
  9.     echo $result->Title . '<br />';
  10. }

The itemSearch() method accepts a single array parameter for handling search options. For full details, including a list of available options, please see the » relevant Amazon documentation

Tip

The Zend_Service_Amazon_Query class is an easy to use wrapper around this method.

Using the Alternative Query API

Introduction

Zend_Service_Amazon_Query provides an alternative API for using the Amazon Web Service. The alternative API uses the Fluent Interface pattern. That is, all calls can be made using chained method calls. (e.g., $obj->method()->method2($arg))

The Zend_Service_Amazon_Query API uses overloading to easily set up an item search and then allows you to search based upon the criteria specified. Each of the options is provided as a method call, and each method's argument corresponds to the named option's value:

Example #7 Search Amazon Using the Alternative Query API

In this example, the alternative query API is used as a fluent interface to specify options and their respective values:

  1. $query = new Zend_Service_Amazon_Query('MY_API_KEY', 'US', 'AMAZON_SECRET_KEY');
  2. $query->Category('Books')->Keywords('PHP');
  3. $results = $query->search();
  4. foreach ($results as $result) {
  5.     echo $result->Title . '<br />';
  6. }

This sets the option Category to "Books" and Keywords to "PHP".

For more information on the available options, please refer to the » relevant Amazon documentation.

Zend_Service_Amazon Classes

The following classes are all returned by Zend_Service_Amazon::itemLookup() and Zend_Service_Amazon::itemSearch():

Zend_Service_Amazon_Item

Zend_Service_Amazon_Item is the class type used to represent an Amazon item returned by the web service. It encompasses all of the items attributes, including title, description, reviews, etc.

Zend_Service_Amazon_Item::asXML()

string asXML ( void

Return the original XML for the item

Properties

Zend_Service_Amazon_Item has a number of properties directly related to their standard Amazon API counterparts.

Zend_Service_Amazon_Item Properties
Name Type Description
ASIN string Amazon Item ID
DetailPageURL string URL to the Items Details Page
SalesRank int Sales Rank for the Item
SmallImage Zend_Service_Amazon_Image Small Image of the Item
MediumImage Zend_Service_Amazon_Image Medium Image of the Item
LargeImage Zend_Service_Amazon_Image Large Image of the Item
Subjects array Item Subjects
Offers Zend_Service_Amazon_OfferSet Offer Summary and Offers for the Item
CustomerReviews array Customer reviews represented as an array of Zend_Service_Amazon_CustomerReview objects
EditorialReviews array Editorial reviews represented as an array of Zend_Service_Amazon_EditorialReview objects
SimilarProducts array Similar Products represented as an array of Zend_Service_Amazon_SimilarProduct objects
Accessories array Accessories for the item represented as an array of Zend_Service_Amazon_Accessories objects
Tracks array An array of track numbers and names for Music CDs and DVDs
ListmaniaLists array Item related Listmania Lists as an array of Zend_Service_Amazon_ListmainList objects
PromotionalTag string Item Promotional Tag

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Zend_Service_Amazon_Image

Zend_Service_Amazon_Image represents a remote Image for a product.

Properties

Zend_Service_Amazon_Image Properties
Name Type Description
Url Zend_Uri Remote URL for the Image
Height int The Height of the image in pixels
Width int The Width of the image in pixels

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Zend_Service_Amazon_ResultSet

Zend_Service_Amazon_ResultSet objects are returned by Zend_Service_Amazon::itemSearch() and allow you to easily handle the multiple results returned.

Note: SeekableIterator
 Implements the SeekableIterator for easy iteration (e.g. using foreach), as well as direct access to a specific result using seek().

Zend_Service_Amazon_ResultSet::totalResults()

int totalResults ( void

Returns the total number of results returned by the search

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Zend_Service_Amazon_OfferSet

Each result returned by Zend_Service_Amazon::itemSearch() and Zend_Service_Amazon::itemLookup() contains a Zend_Service_Amazon_OfferSet object through which pricing information for the item can be retrieved.

Properties

Zend_Service_Amazon_OfferSet Properties
Name Type Description
LowestNewPrice int Lowest Price for the item in "New" condition
LowestNewPriceCurrency string The currency for the LowestNewPrice
LowestOldPrice int Lowest Price for the item in "Used" condition
LowestOldPriceCurrency string The currency for the LowestOldPrice
TotalNew int Total number of "new" condition available for the item
TotalUsed int Total number of "used" condition available for the item
TotalCollectible int Total number of "collectible" condition available for the item
TotalRefurbished int Total number of "refurbished" condition available for the item
Offers array An array of Zend_Service_Amazon_Offer objects.

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Zend_Service_Amazon_Offer

Each offer for an item is returned as an Zend_Service_Amazon_Offer object.

Zend_Service_Amazon_Offer Properties

Properties
Name Type Description
MerchantId string Merchants Amazon ID
MerchantName string Merchants Amazon Name. Requires setting the ResponseGroup option to OfferFull to retrieve.
GlancePage string URL for a page with a summary of the Merchant
Condition string Condition of the item
OfferListingId string ID of the Offer Listing
Price int Price for the item
CurrencyCode string Currency Code for the price of the item
Availability string Availability of the item
IsEligibleForSuperSaverShipping boolean Whether the item is eligible for Super Saver Shipping or not

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Zend_Service_Amazon_SimilarProduct

When searching for items, Amazon also returns a list of similar products that the searcher may find to their liking. Each of these is returned as a Zend_Service_Amazon_SimilarProduct object.

Each object contains the information to allow you to make sub-sequent requests to get the full information on the item.

Properties

Zend_Service_Amazon_SimilarProduct Properties
Name Type Description
ASIN string Products Amazon Unique ID (ASIN)
Title string Products Title

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Zend_Service_Amazon_Accessories

Accessories for the returned item are represented as Zend_Service_Amazon_Accessories objects

Properties

Zend_Service_Amazon_Accessories Properties
Name Type Description
ASIN string Products Amazon Unique ID (ASIN)
Title string Products Title

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Zend_Service_Amazon_CustomerReview

Each Customer Review is returned as a Zend_Service_Amazon_CustomerReview object.

Properties

Zend_Service_Amazon_CustomerReview Properties
Name Type Description
Rating string Item Rating
HelpfulVotes string Votes on how helpful the review is
CustomerId string Customer ID
TotalVotes string Total Votes
Date string Date of the Review
Summary string Review Summary
Content string Review Content

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Zend_Service_Amazon_EditorialReview

Each items Editorial Reviews are returned as a Zend_Service_Amazon_EditorialReview object

Properties

Zend_Service_Amazon_EditorialReview Properties
Name Type Description
Source string Source of the Editorial Review
Content string Review Content

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Zend_Service_Amazon_Listmania

Each results List Mania List items are returned as Zend_Service_Amazon_Listmania objects.

Properties

Zend_Service_Amazon_Listmania Properties
Name Type Description
ListId string List ID
ListName string List Name

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