Check if a browser supports a specific MIME type?

Question

How can i check if the browser supports a specific mime type with php?

Answer 1

You could analyze the Accept header field to see if the type or a superset of that type is listed.

But notice that Accept is a list of rated values and a quality value of 0 means not accepted. And browsers send different Accept values based on their expectations for that resource (e.g. a resource referenced in IMG element is expected to be an element of image/*).