PHP. Учебник. 2005

dio_open

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dio_open

(PHP 4 >= 4.2.0, PECL)dio_open -- Opens a new filename with specified permissions of flags and creation permissions of mode

Описание

resource dio_open ( string filename, int flags [, int mode] )


- dio_open() opens a file and returns a new file descriptor for it.

Список параметров

-

filename

- The opened file.

flags

- The flags parameter can also include any combination of the following flags:

- O_CREAT - creates the file, if it doesn't already exist.

  • - O_EXCL - if both, O_CREAT and O_EXCL are set, dio_open() fails, if the file already exists.
  • - O_TRUNC - if the file exists, and its opened for write access, the file will be truncated to zero length.
  • - O_APPEND - write operations write data at the end of the file.
  • - O_NONBLOCK - sets non blocking mode.

    • mode

    - If flags is O_CREAT, mode will set the mode of the file (creation permissions).

    - O_RDONLY - opens the file for read access.

  • - O_WRONLY - opens the file for write access.
  • - O_RDWR - opens the file for both reading and writing.

    • Возвращаемые значения

    - A file descriptor or FALSE on error.

    Примеры

    Пример 1. Opening a file descriptor

    <?php

    $fd     = dio_open('/dev/ttyS0', O_RDWR | O_NOCTTY | O_NONBLOCK);

    dio_close($fd);
    ?>

    Смотрите также

    -

    dio_close()

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