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.