php - finfo_file() returns wrong mime type for some images? -

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I allow the image upload on my website and I need to get the file type to upload the file so that I can see Can I see what type is in the whitelist and is allowed to upload.

I'm using it using finfo_file () , but it does not work in all cases. Here's my code: 

  // mime type get $ finfo = finfo_open (FILEINFO_MIME_TYPE); $ Mime = finfo_file ($ finfo, $ filePath); Echo $ mime;   
  
 Try the above code on the above image and say that the mime type is  application / octet-stream  when it is Clearly a JPG file.  
 Why the  financefolder ()  is not working with the test image? Whatever problem can I fix so that I can get the file type correctly?   
 
 
 Alternatively, you can use the  exif_imagetype ()  with  image_type_to_mime_type ()  can also be used. Example:    function get_mime ($ url) {$ image_type = exif_imagetype ($ url); Return image_type_to_mime_type ($ image_type); } Echo get_mime ('http://ecx.images-amazon.com/images/I/41q8koaxM0L.jpg'); // image / jpeg

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