The functions in this module try to guess the content type
and encoding of a file by looking for certain
magic byte sequences at specific
positions within the file. While this is not a bullet proof
approach the heuristics used do a very good job.
magic_open library is needed to build this extension.
A short installation note: just type
in your console.
This extension has no configuration directives defined in php.ini.
There is one resource used in Fileinfo extension: a magic database
descriptor returned by finfo_open().
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.
