   #PHP Manual POSIX functions posix_kill posix_setegid

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                                 posix_mkfifo

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

     Note: When safe mode is enabled, PHP checks whether the directory
     in which you are about to operate has the same UID (owner) as the
     script that is being executed.
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