Fileinfo Functions
簡介
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.
需求
magic_open library is needed to build this extension.
安裝
安裝此 PECL 擴充功能的訊息可在手冊中標題為 PECL 擴充功能安裝的一章中找到。 更多訊息如新版本,下載,原始文件,維護者訊息以及更新日誌等可以在這裡找到: » https://pecl.php.net/package/fileinfo
執行時期設定
本擴充功能在 php.ini 中未定義任何設定選項。
資源類型
There is one resource used in Fileinfo extension: a magic database descriptor returned by finfo_open().
預設常數
以下常數由擴充功能定義,因此只有在擴充功能被編譯到 PHP 中,或者在執行時被動態載入後才有效。
- 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.
Table of Contents
- 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