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# posix_mkfifo

(PHP 3 >= 3.0.13, PHP 4, PHP 5)

posix_mkfifo -- Create a fifo special file (a named pipe)

## 说明

bool posix_mkfifo ( string pathname, int mode )

posix_mkfifo() creates a special `FIFO` file which exists in the file system and acts as a bidirectional communication endpoint for processes.

## 参数

`pathname`

  Path to the `FIFO` file.

`mode`

  The second parameter `mode` has to be given in octal notation (e.g. 0644). The permission of the newly created `FIFO` also depends on the setting of the current umask(). The permissions of the created file are (mode & ~umask).

## 返回值

如果成功则返回 `TRUE`，失败则返回 `FALSE`。

## 注释

> 注意: 当安全模式被激活时，PHP 将检查被操作的文件或者目录是否与正在执行的脚本有相同的 UID（所有者）。

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