Shipping Labels for fedex, ups, dhl, usps

I need a php script that will use Fedex API to generate and display a image of Fedex prepaid shipping labels. They prepay for shipping labels they buy at bulk discount (like 100 shipping label credits) and they will have credit in system and will have number of days to redeem their shipping label credits. they can choose shipping from: -from same address, same product size/weight to ship to same address or different address and deduct shipping credit and then print their shipping label, image, and tracking from fedex api -from same address, different product size/weight to ship to same address or different address and deduct shipping credit and then print their shipping label, image, and tracking from fedex api the customer information pulled from our database the script need to connect to Fedex API and return a shipping label image tracking code for customer to print. Need FedEx Shipping Label Generation script in PHP. If you have already made shipping script for FEDEX, UPS, DHL, OR USPS THEN LET ME KNOW, we are looking for all of these solutions. thanks