检查浏览器中支持特定的MIME类型？ [英] Check if a browser supports a specific MIME type?

问题描述

如何检查浏览器是否支持用php特定的MIME类型？

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

推荐答案

您可以分析的 接受的头字段，查看类型或该类型的超集列。

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

但是，受理通知书的是额定值的列表和的质量值表示不接受。和浏览器基于他们对于资源的预期（如 IMG 引用的资源要素预计将<$的元素发出不同的接受的值C $ C>图像/ * ）。

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/*).

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