Install Composer and add amazon-mws to your composer.json:

"require": {
  "psyforce/amazon-mws-php":"dev-master"
}

Used these libraries :

• amazon-mws-v20090101-php-2015-06-18.V316922310
• MWSProductsPHPClientLibrary-2011-10-01.V269521068
• MWSCartInfoPHPClientLibrary-2014-03-01.V316921881
• MWSCustomerInfoPHPClientLibrary-2014-03-01.V316922060
• MWSFulfillmentInboundShipmentPHPClientLibrary-2010-10-01.V276046204
• MWSFulfillmentInventoryPHPClientLibrary-2010-10-01.V274218980
• MWSFulfillmentOutboundShipmentPHPClientLibrary-2010-10-01.V300197569
• MWSMerchantFulfillmentPHPClientLibrary-2015-06-01.V294540041
• MWSOrdersPHPClientLibrary-2013-09-01.CB487774971
• MWSRecommendationsPHPClientLibrary-2013-04-01.V316922852
• MWSSellersPHPClientLibrary-2011-07-01.V316922799
• MWSSubscriptionsServicePHPClientLibrary-2013-07-01.V316922762
• MWSWebstorePHPClientLibrary-2014-09-01.V316922770