(PHP 4, PHP 5, PHP 7)
Create a fifo special file (a named pipe)
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.
Parameters:
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).
Returns:
Returns TRUE on success or FALSE on failure.
Notes:
When safe mode is enabled, PHP checks whether the files or directories being operated upon have the same UID (owner) as the script that is being executed.
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