Amazon S3 Data retrieval in URL for all the images in bucket

I have my bucket on Amazon S3 filled with lot of images. I want to develop a API that would hotlink all the images to my website. For this i want to write a code that would fetch the URL`s for all the images from bucket into a PHP - array.

I could`nt find code that would dynamically fetch the URL of all the files in bucket without passing the file name.

Waiting for help !!