Can I detect image request by HTTP headers?

Question

Well, I would like to know if it's possible to detect by HTTP headers if request comes from <img tag.

I assume that when request is called from <img tag, I'll not have */* header in HTTP_ACCEPT or I'm missing something.

Regards

EDIT: I've tried with few browser but i can't conclude nothing by HTTP_ACCEPT...

Nick · Accepted Answer · 2010-10-31T13:06:46.950

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No, sorry - a browser request made for an img tag will be identical to any other GET request - though as you point out, Firefox does give an Accept header specifying that it expects some kind of image but unless all browsers do this it's not very useful.

What's this for? There might be another way to do what you want.

edited Oct 31 '10 at 13:06

answered Oct 31 '10 at 12:56

Nick

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well... not right... for image (at least for FF) is: image/png,image/*;q=0.8,*/*;q=0.5 – confiq Oct 31 '10 at 13:02
So it does. I only actually checked Chrome and didn't think Firefox would bother. I'll update my answer a bit. – Nick Oct 31 '10 at 13:05
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@confiq: That's not very reliable. – You Oct 31 '10 at 13:05
i need to detect in PHP request if it's image or not. It would be elegant solution using HTTP_ACCEPT... – confiq Oct 31 '10 at 13:53

Can I detect image request by HTTP headers?

1 Answers1