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Fileinfo
PHP Manual

Predefined Constants

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 (integer)
No special handling.
FILEINFO_SYMLINK (integer)
Follow symlinks.
FILEINFO_MIME (integer)
Return a mime string, instead of a textual description.
FILEINFO_COMPRESS (integer)
Decompress compressed files.
FILEINFO_DEVICES (integer)
Look at the contents of blocks or character special devices.
FILEINFO_CONTINUE (integer)
Return all matches, not just the first.
FILEINFO_PRESERVE_ATIME (integer)
If possible preserve the original access time.
FILEINFO_RAW (integer)
Don't translate unprintable characters to a \ooo octal representation.

Fileinfo
PHP Manual