Amazon MWS Getting Tracking number only

Since the merchant must enter the tracking number in the Amazon Seller central if the product is shipped. We only need a php class which can get the tracking number from the Amazon seller account, provided that the API key is given. So, as long as the Amazon seller give us the API key, I can run the class and get ALL the order info, such as: order number, buyer email (amazon email), item id, sku, etc. and the most important part is the tracking number and shipping company. i don't need UI design or anything, can hardcode the api key in php. i need the php Class only show us your working copy, we can't give you Amazon API key.