http://docs.amazonwebservices.com/AWSEcommerceService/2005-03-23/index.html
Amazon Associates & AWS - PHP5 and jQueryWork in progress
http://moblur.org/workshop/ajax_amazon_associates/
Part #1 - Search engineEnter Title keywords and press the Return key (US books only).Examples : xml, jquery, php 5, perl
by Rajesh Lal - Professional Web Widgets with CSS, DOM, JSON and Ajax
by LynnAnne Merten - DTIC technical report
by Joshua Eichorn - Understanding AJAX: Consuming the Sent Data with XML and JSON, Digital ShortcutPHP5 Source codeBasicaly, this script builds the SOAP Query array, instanciate a Soap client with various options, place a call to Amazon Web Service and return the data.
Note: You must be registered with Amazon web services (AWS) to use this script.
<?
define(’SITE_ROOT’, $_SERVER['DOCUMENT_ROOT']);
/**
* I set up a cronjob to update this one every hour (see below)
*/
$wsdl_path = SITE_ROOT . ‘/path/cache/AWSECommerceService.wsdl’;
$subscription_id = ‘<your AWS subscription id>’;
/**
* The best pratice here would be to sanitize the keywords
*/
$search_query = array(
‘SubscriptionId’ => $subscription_id,
‘AssociateTag’ => ‘moblurorg-21′,
‘Request’ => array(
“Title” => $_GET['keywords'],
“Count” => $_GET['count'],
“SearchIndex” => “Books”,
“ResponseGroup” => “Medium”
),
);
/**
* PHP5 SoapClient initialization
*/
$c = new SoapClient($wsdl_path, array(
‘encoding’=>’UTF-8′,
‘compression’ => SOAP_COMPRESSION_ACCEPT | SOAP_COMPRESSION_GZIP
)
);
/**
* Calling the Soap method
*/
$result = $c->__call(’ItemSearch’, array(’body’ => $search_query));
/**
* If there’s any error, return it using json_encode()
*/
if(is_object($result->Items->Request->Errors->Error)) {
print json_encode($result->Items->Request->Errors->Error);
}
else {
/**
* No error, returning the whole php object as Json data using json_encode()
*/
if(is_array($result->Items->Item)) {
print json_encode($result->Items->Item);
}
}
?>
Minimum xHTML
<input type=”text” name=”keyword” value=”" id=”keyword”/>
<span id=”waiter” style=”display:none;”>
<img src=”ajax-loader-small.gif” mce_src=”ajax-loader-small.gif” style=”border: none;” alt=”loading…”/>
</span>
<div id=”container”></div>
Minimum CSS 2.0
#container {
text-align: center;
width: 100%;
}
.book {
float:left;
text-align:center;
width:30%;
height:200px;
}
Javascript - jQuery Source code
function get_books(options) {
var defaults = {
‘keywords’ : ”,
‘max_items’ : 3,
‘debug’ : true
};
if(options.keywords && options.keywords.length > 0) {
/**
* Setting unsetted options to defaults
*/
for (var o in defaults) {
if(!options[o] || options[o] == undefined) {
options[o] = defaults[o];
}
}
/**
* jQuery Ajax
*/
$.ajax(
{
type: ‘GET’,
url: ’service.php?keywords=’ + options.keywords + ‘&count=’ + options.max_items,
cache: false,
dataType: ‘json’,
success: function(json){
/**
* We’ve got an error from AWS, displaying it.
*/
if(json['Message'] != undefined) {
$(”#container”).html(’ ‘);
$(”#container”).append(’<p>’+json['Message']+’</p>’);
return;
}
else {
/**
* Trimming results to minimum from ever options
* or AWS answer, wichever is the lesser
*/
var stop_at = Math.min.apply({},[options.max_items, json.length-1]);
/**
* Looping through records
*/
for (var i in json) {
i = parseInt(i);
/**
* This is a new search, reseting the container
*/
if(i == 0) {$(”#container”).html(’ ‘);}
/**
* The item has image informations
*/
if(typeof(json[i]['SmallImage']) == ‘object’) {
var img_url = json[i]['SmallImage']['URL'];
var img_w = json[i]['SmallImage']['Width']['_'];
var img_h = json[i]['SmallImage']['Height']['_']
}
else {
/**
* Default image settings
*/
var img_url = ‘/public/no-img.gif’;
var img_w = 60;
var img_h = 40;
}
/**
* Appending result to the container
*/
$(”#container”).append(’<p class=”book”><a href=”‘+json[i]['DetailPageURL']+
‘”><img src=”‘+ img_url +’” width=”‘+img_w+’” height=”‘+img_h+
‘” alt=”‘+ json[i]['ItemAttributes']['Title'] + ‘”/></a><br/>by ‘+
json[i]['ItemAttributes']['Author'] + ‘ - ‘ + json[i]['ItemAttributes']['Title']+
‘</p>’);
/**
* Safely closing our display if stop’s reached
*/
if(i == stop_at) {
$(”#container”).append(’<div style=”clear:both;”></div>’);
return;
}
}
}
}
}
);
}
}
$(document).ready(function() {
/**
* Displaying the ‘Ajax web2.0 waiter’ during AWS calls
*/
$(”#waiter”).ajaxStart(function(){
$(this).show();
}).ajaxComplete(function(){
$(this).hide();
});
/**
* The fonction is triggered each time the input receive the keycode 13 (return)
*/
$(’#keyword’).bind(’keyup’, function(e) {
if(parseInt(e.keyCode) == 13) {
get_books({’keywords’: $(’#keyword’).attr(’value’)});
}
});
});
Appendix - CronjobThe content of “http://webservices.amazon.com/AWSECommerceService/AWSECommerceService.wsdl” will be saved as /path/cache/AWSECommerceService.wsdl every hour at 05 minutes.
#5 * * * * wget -q -O /path/cache/AWSECommerceService.wsdl \
http://webservices.amazon.com/AWSECommerceService/AWSECommerceService.wsdl
OR
AMAZON.COM CURL-REST Parser.
Copyright ©2004, Jon Ellis-Jones.
This script is a nice and easy way of parsing REST data from Amazon. The
idea is, you can obtain data about Amazon products for display/storage in
a database, eg. If you had a website about books, you could store amazon’s
review or price, images, dimensions etc about each book - the posibilities
are endless.
see: http://www.amazon.com/webservices for more information.
NB : this script works for all amazon subsites, such as amazon.co.uk/amazon.de,
just modify the areas in the script. for more help, see the URL above.
PREREQUISITES:
————–
You must have the cURL extension enabled in PHP. See below URL for details:
http://www.weberdev.com/Manuals/PHP/ref.curl.html
