PHP: Handling 'JSONP' output vs 'JSON', and its parsing?

Question

I am having a problem parsing \'jsonp\' request with php\'s json_decode function.

My questions is

a. What is the u

Answer 1

Not sure about it but i think names should also be quoted like this:

domain_jsonp_callback({
   Categories:[
      {
         "Name":"Artifacts",
         "Position":14,
         "Count":70,
         "ImageUrls":{
            "i100":"//s3-eu-west-1.amazonaws.com/s.domain.com/1.png",
            "i120":"//s3-eu-west-1.amazonaws.com/s.domain.com/2.png",
            "i140":"//s3-eu-west-1.amazonaws.com/s.domain.com/3.png",
            "i180":"//s3-eu-west-1.amazonaws.com/s.domain.com/4.png",
            "i220":"//s3-eu-west-1.amazonaws.com/s.domain.com/5.png",
            "i280":"//s3-eu-west-1.amazonaws.com/s.domain.com/6.png"
         }
      }
   ]
});

PS: Probably "Categories" too :?