Identify EAN / UPC barcode numbers from image in PHP / JS?

I'm looking for a way to identify EAN / UPC (primarily EAN) barcode numerals from a camera-captured image in PHP or Javascript. I've found a few libraries for Java but ideally would like one of PHP or JS to manage it. Not sure if feasible, but any advice appreciated!

Edit: tried http://zxing.org/w/decode.jspx with some sample images from iPod Touch camera, with mixed success.