LXXVII. Mimetype Functions
簡介
| 警示 |
This extension has been deprecated as the PECL extension fileinfo provides the same functionality (and more) in a much cleaner way. |
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.
This extension is derived from Apache mod_mime_magic, which is itself based on the file command maintained by Ian F. Darwin. See the source code for further historic and copyright information.
需求
要編譯本增加模組無需外部庫檔案。
安裝
You must compile PHP with the configure switch --with-mime-magic to get support for mime-type functions. The extension needs a copy of the simplified magic file that is distributed with the Apache httpd.
注: The configure option has been changed from --enable-mime-magic to --with-mime-magic since PHP 4.3.2
注: This extension is not capable of handling the fully decorated magic file that generally comes with standard Linux distro's and is supposed to be used with recent versions of file command.
Note to Win32 Users: In order to use this module on a Windows environment, you must set the path to the bundled magic.mime file in your php.ini.
Remember to substitute the $PHP_INSTALL_DIR for your actual path to PHP in the above example. e.g. c:\php
運行時配置
這些函數的行為受 php.ini 的影響。
表格 1. Mimetype configuration options
| Name | Default | Changeable | Changelog |
|---|---|---|---|
| mime_magic.debug | "0" | PHP_INI_SYSTEM | Available since PHP 5.0.0. |
| mime_magic.magicfile | "/path/to/php/magic.mime" | PHP_INI_SYSTEM | Available since PHP 4.3.0. |
以下是配置選項的簡要解釋。
資源類型
本增加模組未定義任何資源類型。
預定義常量
本增加模組未定義任何常量。
- 目錄
- mime_content_type -- Detect MIME Content-type for a file