XXXVIII. Fileinfo Functions
Introduzione
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.
Requisiti
magic_open library is needed to build this extension.
Configurazione di Runtime
Questa estensione non definisce alcuna direttiva di configurazione in php.ini
Tipi di risorse
There is one resource used in Fileinfo extension: a magic database descriptor returned by finfo_open().
Costanti predefinite
Queste costanti sono definite da questa estensione e sono disponibili solo se l'estensione è stata compilata nel PHP o se è stata caricata dinamicamente a 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.
- Sommario
- finfo_buffer -- Return information about a string buffer
- finfo_close -- Close fileinfo resource
- finfo_file -- Return information about a file
- finfo_open -- Create a new fileinfo resource
- finfo_set_flags -- Set libmagic configuration options