proceed with caution
as the documentation already says 
        
FILEINFO_MIME will output something like "image/jpeg; charset=binary"
        
while
        
FILEINFO_MIME_TYPE outputs  "image/jpeg"
and
FILEINFO_MIME_ENCODING outputs  "binary"The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.
FILEINFO_NONE
    (int)
   FILEINFO_SYMLINK
    (int)
   FILEINFO_MIME_TYPE
    (int)
   FILEINFO_MIME_ENCODING
    (int)
   FILEINFO_MIME
    (int)
   FILEINFO_COMPRESS
     (int)
   FILEINFO_DEVICES
    (int)
   FILEINFO_CONTINUE
    (int)
   FILEINFO_PRESERVE_ATIME
    (int)
   FILEINFO_RAW
    (int)
   \ooo octal
     representation.
    
   FILEINFO_EXTENSION
    (int)
   JPEG
     images, then the return value is multiple extensions separated by a forward slash e.g.:
     "jpeg/jpg/jpe/jfif". For unknown types not available in the
     magic.mime database, then return value is "???".
    
    
     Available since PHP 7.2.0.
    
   FILEINFO_APPLE
    (int)
   proceed with caution
as the documentation already says 
        
FILEINFO_MIME will output something like "image/jpeg; charset=binary"
        
while
        
FILEINFO_MIME_TYPE outputs  "image/jpeg"
and
FILEINFO_MIME_ENCODING outputs  "binary"