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>Direct IO Functions</TITLE
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><DIV
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NAME="ref.dio"
></A
><DIV
CLASS="TITLEPAGE"
><H1
CLASS="title"
>XXVIII. Direct IO Functions</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN35789"
></A
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="dio.intro"
>简介</A
></H1
><P
> PHP supports the direct io functions as described in the Posix
Standard (Section 6) for performing I/O functions at a lower
level than the C-Language stream I/O functions
(<A
HREF="function.fopen.html"
><B
CLASS="function"
>fopen()</B
></A
>, <A
HREF="function.fread.html"
><B
CLASS="function"
>fread()</B
></A
>,..). The use
of the DIO functions should be considered only when direct
control of a device is needed. In all other cases, the standard
<A
HREF="ref.filesystem.html"
>filesystem</A
> functions are more
than adequate.
</P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
本扩展已被移动到 <A
HREF="http://pecl.php.net"
TARGET="_top"
>PECL</A
> 库中且自以下版本起不再被绑定到 PHP 中：5.1.0.
</P
></BLOCKQUOTE
></DIV
><P
> This extension is only available on Windows Platforms as of PHP 5.0.0
</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="dio.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="dio.installation"
>安装</A
></H1
><P
> To get these functions to work, you have to configure PHP with
<CODE
CLASS="option"
>--enable-dio</CODE
>.
</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="dio.constants"
>预定义常量</A
></H1
><P
>以下常量由本扩展模块定义，因此只有在本扩展模块被编译到
PHP 中，或者在运行时被动态加载后才有效。</P
><P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><TT
CLASS="constant"
><B
>c</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_DUPFD</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_GETFD</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_GETFL</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_GETLK</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_GETOWN</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_RDLCK</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_SETFL</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_SETLK</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_SETLKW</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_SETOWN</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_UNLCK</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>F_WRLCK</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_APPEND</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_ASYNC</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_CREAT</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_EXCL</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_NDELAY</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_NOCTTY</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_NONBLOCK</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_RDONLY</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_RDWR</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_SYNC</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_TRUNC</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>O_WRONLY</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IRGRP</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IROTH</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IRUSR</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IRWXG</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IRWXO</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IRWXU</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IWGRP</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IWOTH</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IWUSR</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IXGRP</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IXOTH</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
><DT
><TT
CLASS="constant"
><B
>S_IXUSR</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
></P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="dio.configuration"
>运行时配置</A
></H1
><P
>本扩展模块在 <TT
CLASS="filename"
>php.ini</TT
> 中未定义任何配置选项。</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="dio.resources"
>资源类型</A
></H1
><P
> One resource type is defined by this extension:
a file descriptor returned by <A
HREF="function.dio-open.html"
><B
CLASS="function"
>dio_open()</B
></A
>.
</P
></DIV
></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>目录</B
></DT
><DT
><A
HREF="function.dio-close.html"
>dio_close</A
> -- Closes the file descriptor given by fd</DT
><DT
><A
HREF="function.dio-fcntl.html"
>dio_fcntl</A
> -- Performs a c library fcntl on fd</DT
><DT
><A
HREF="function.dio-open.html"
>dio_open</A
> --
Opens a new filename with specified permissions of flags and
creation permissions of mode
</DT
><DT
><A
HREF="function.dio-read.html"
>dio_read</A
> -- Reads bytes from a file descriptor</DT
><DT
><A
HREF="function.dio-seek.html"
>dio_seek</A
> -- Seeks to pos on fd from whence</DT
><DT
><A
HREF="function.dio-stat.html"
>dio_stat</A
> --
Gets stat information about the file descriptor fd
</DT
><DT
><A
HREF="function.dio-tcsetattr.html"
>dio_tcsetattr</A
> --
Sets terminal attributes and baud rate for a serial port
</DT
><DT
><A
HREF="function.dio-truncate.html"
>dio_truncate</A
> --
Truncates file descriptor fd to offset bytes
</DT
><DT
><A
HREF="function.dio-write.html"
>dio_write</A
> --
Writes data to fd with optional truncation at length
</DT
></DL
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