How to check if MIME type is JPG, PNG, BMP or GIF?

Question

I wrote this code:

$filename = "some/path/where/the/file/can/be/found.some_extension"; $buffer = file_get_contents($filename); $finfo = new finfo(FILEINFO_MIME_TYPE); var_dump($finfo->buffer($buffer)); finfo_close($finfo); 

Possible outputs:

 "image/jpeg", "image/png", "image/gif", "image/x-ms-bmp" 

I would like to know what are the possible outputs of $finfo->buffer($buffer) if the file is png, gif, bmp or jpg?

I saw here a returnMIMEType , which, for example, will not detect "image/x-ms-bmp" as bmp.

Answer 1

We can view the possible types of MIME extensions by searching for the file extension using the link provided by Pitchinnate. For example, BMP MIME types can be found at: filext.com/file-extension/BMP