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><DIV
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><H1
CLASS="title"
>LXXXVIII. Mimetype Functions</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN119223"
></A
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mime-magic.intro"
>简介</A
></H1
><DIV
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><P
></P
><TABLE
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><TD
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><B
>警告</B
></TD
></TR
><TR
><TD
ALIGN="LEFT"
><P
> This extension has been deprecated as the PECL extension
<A
HREF="ref.fileinfo.html"
>Fileinfo</A
>
provides the same functionality (and more) in a much cleaner way.
</P
></TD
></TR
></TABLE
></DIV
><P
> The functions in this module try to guess the content type
and encoding of a file by looking for certain
<SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>magic</I
></SPAN
> byte sequences at specific
positions within the file. While this is not a bullet proof
approach the heuristics used do a very good job.
</P
><P
> This extension is derived from Apache mod_mime_magic,
which is itself based on the <TT
CLASS="filename"
>file</TT
>
command maintained by Ian F. Darwin. See the source code for
further historic and copyright information.
</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mime-magic.requirements"
>需求</A
></H1
><P
>要编译本扩展模块无需外部库文件。</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mime-magic.installation"
>安装</A
></H1
><P
> You must compile PHP with the configure switch
<CODE
CLASS="option"
>--with-mime-magic</CODE
> to get support for
mime-type functions. The extension needs a copy of the simplified
<TT
CLASS="filename"
>magic</TT
> file that is distributed with the Apache httpd.
</P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
The configure option has been changed from
<CODE
CLASS="option"
>--enable-mime-magic</CODE
>
to <CODE
CLASS="option"
>--with-mime-magic</CODE
> since PHP 4.3.2
</P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
This extension is not capable of handling the fully decorated
<TT
CLASS="filename"
>magic</TT
> file that generally comes with
standard Linux distro's and is supposed to be used with
recent versions of <TT
CLASS="filename"
>file</TT
> command.
</P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Note to Win32 Users: </B
>
In order to use this module on a Windows environment, you must set the path
to the bundled <TT
CLASS="filename"
>magic.mime</TT
> file in your <TT
CLASS="filename"
>php.ini</TT
>.
</P
><P
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><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN119255"
></A
><P
><B
>例 1. Setting the path to <TT
CLASS="filename"
>magic.mime</TT
></B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="programlisting"
>mime_magic.magicfile = "$PHP_INSTALL_DIR\magic.mime"</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
><P
> Remember to substitute the <TT
CLASS="filename"
>$PHP_INSTALL_DIR</TT
> for your actual
path to PHP in the above example. e.g.
<TT
CLASS="filename"
>c:\php</TT
>
</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mime-magic.configuration"
>运行时配置</A
></H1
><P
>这些函数的行为受 <TT
CLASS="filename"
>php.ini</TT
> 的影响。</P
><P
> <DIV
CLASS="table"
><A
NAME="AEN119267"
></A
><P
><B
>表 1. Mimetype configuration options</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><COL><THEAD
><TR
><TH
>Name</TH
><TH
>Default</TH
><TH
>Changeable</TH
><TH
>Changelog</TH
></TR
></THEAD
><TBODY
><TR
><TD
>mime_magic.debug</TD
><TD
>"0"</TD
><TD
>PHP_INI_SYSTEM</TD
><TD
>Available since PHP 5.0.0.</TD
></TR
><TR
><TD
>mime_magic.magicfile</TD
><TD
>"/path/to/php/magic.mime"</TD
><TD
>PHP_INI_SYSTEM</TD
><TD
>Available since PHP 4.3.0.</TD
></TR
></TBODY
></TABLE
></DIV
>
有关 PHP_INI_* 常量进一步的细节与定义参见<A
HREF="ini.html"
>附录 H</A
>。
</P
><P
>以下是配置选项的简要解释。</P
><P
> <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><A
NAME="ini.mime-magic.debug"
></A
><CODE
CLASS="parameter"
>mime_magic.debug</CODE
>
<A
HREF="language.types.boolean.html"
><B
CLASS="type"
>bool</B
></A
></DT
><DD
><P
> Enable/disable debugging.
</P
></DD
><DT
><A
NAME="ini.mime-magic.magicfile"
></A
><CODE
CLASS="parameter"
>mime_magic.magicfile</CODE
>
<A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
> The path to the magic.mime file.
</P
></DD
></DL
></DIV
>
</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mime-magic.resources"
>资源类型</A
></H1
><P
>本扩展模块未定义任何资源类型。</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mime-magic.constants"
>预定义常量</A
></H1
><P
>本扩展模块未定义任何常量。</P
></DIV
></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>目录</B
></DT
><DT
><A
HREF="function.mime-content-type.html"
>mime_content_type</A
> -- Detect MIME Content-type for a file (deprecated)</DT
></DL
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