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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)

## Description

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.

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).

Returnerer `TRUE` ved succes, `FALSE` ved fejl.

> Bemærk: Når safe mode er aktiveret, checker PHP om biblioteket som du er ved at benytte, har det samme UID (owner) som scriptet der bliver eksekveret.

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