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dio_close> <dbx_sort
Last updated: Sun, 25 Nov 2007

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Direct IO Functions

소개

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 (fopen(), fread(),..). The use of the DIO functions should be considered only when direct control of a device is needed. In all other cases, the standard filesystem functions are more than adequate.

Note: This extension has been moved to the » PECL repository and is no longer bundled with PHP as of PHP 5.1.0.

This extension is only available on Windows Platforms as of PHP 5.0.0

요구 조건

이 확장을 빌드할 때 외부 라이브러리가 필요하지 않습니다.

설치

To get these functions to work, you have to configure PHP with --enable-dio.

예약 상수

이 확장은 다음의 상수들을 정의합니다. 이 확장을 PHP에 내장했거나, 실행시에 동적으로 읽어들일 경우에만 사용할 수 있습니다.

c (integer)

F_DUPFD (integer)

F_GETFD (integer)

F_GETFL (integer)

F_GETLK (integer)

F_GETOWN (integer)

F_RDLCK (integer)

F_SETFL (integer)

F_SETLK (integer)

F_SETLKW (integer)

F_SETOWN (integer)

F_UNLCK (integer)

F_WRLCK (integer)

O_APPEND (integer)

O_ASYNC (integer)

O_CREAT (integer)

O_EXCL (integer)

O_NDELAY (integer)

O_NOCTTY (integer)

O_NONBLOCK (integer)

O_RDONLY (integer)

O_RDWR (integer)

O_SYNC (integer)

O_TRUNC (integer)

O_WRONLY (integer)

S_IRGRP (integer)

S_IROTH (integer)

S_IRUSR (integer)

S_IRWXG (integer)

S_IRWXO (integer)

S_IRWXU (integer)

S_IWGRP (integer)

S_IWOTH (integer)

S_IWUSR (integer)

S_IXGRP (integer)

S_IXOTH (integer)

S_IXUSR (integer)

실행시 설정

이 확장은 php.ini 설정이 존재하지 않습니다.

자원형

One resource type is defined by this extension: a file descriptor returned by dio_open().

Table of Contents

  • dio_close — Closes the file descriptor given by fd
  • dio_fcntl — Performs a c library fcntl on fd
  • dio_open — Opens a new filename with specified permissions of flags and creation permissions of mode
  • dio_read — Reads bytes from a file descriptor
  • dio_seek — Seeks to pos on fd from whence
  • dio_stat — Gets stat information about the file descriptor fd
  • dio_tcsetattr — Sets terminal attributes and baud rate for a serial port
  • dio_truncate — Truncates file descriptor fd to offset bytes
  • dio_write — Writes data to fd with optional truncation at length


dio_close> <dbx_sort
Last updated: Sun, 25 Nov 2007
 
add a note add a note User Contributed Notes
Direct IO
abe at siticompulsi dot net
25-Feb-2008 07:15
(sorry for my English)
http://pecl.php.net/get/dio seems broken at the moment
to get dio extension follow these steps (steps 1.a and 1.b are equivalent):

1.a  get source files using cvs (you may need cvsnt or similar):

     (in shell run)
     cvs -d :pserver:cvsread@cvs.php.net:/repository login
     Password: phpfi
     cvs -d :pserver:cvsread@cvs.php.net:/repository co pecl/dio
     cd pecl/dio/

-- or --

1.b  manually download all files at http://cvs.php.net/cvs.php/pecl/dio clicking on the revision number link
     move to the destination directory

2.   (in shell run)
     phpize (if the system is missing the 'phpize' command see http://php.mirrors.ilisys.com.au/manual/en/install.pecl.phpize.php)
     ./configure --enable-dio --with-php-config=/path/to/php-config (usually /usr/local/php/bin/php-config or /usr/bin/php-config)

     make
     make install (you need root/admin privilegies)
php dot 5 dot gavinostlund at spamgourmet dot com
07-Dec-2007 04:36
You can manually build the dio extension for your version of PHP, or install an older version of PHP that still bundled dio.  It's not that hard to build it yourself, just a bit of a process, and it helps if you're on linux, and have a build environment... which I would assume you have if you are doing some kind of development that requires direct device I/O...  Just get the dio source from the cvs repo, compile it, and then add the extension to your php configuration...
tom at bitworks dot de
03-Nov-2007 06:41
to use mandatory locking on a linux system, the filesystem has to be well prepared.

# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>               <dump>  <pass>
/dev/hda1       /               ext3    errors=remount-ro,mand  0       1
/dev/hda2       none            swap    sw                      0       0
proc            /proc           proc    defaults                0       0
/dev/fd0        /floppy         auto    user,noauto             0       0
/dev/cdrom      /cdrom          iso9660 ro,user,noauto          0       0

For example here the ext3 partition has been prepared for mandatory locking. Otherwise no dio_function will work on the system.
richard d_0t cubek a_t example D0_t com
25-Sep-2007 01:13
IMPORTANT:

--enable-dio is NOT recognized as an option. After reporting a bug, i got following answer:

It is not bundled anymore. See http://pecl.php.net/dio to fetch the CVS version (being unmaintained, there is no release in pecl). Not a bug > bogus.

dio_close> <dbx_sort
Last updated: Sun, 25 Nov 2007
 
 
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