(3.0.13 - 3.0.18 only, PHP 4 >= 4.0.0)

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


bool posix_mkfifo (string pathname, int mode)

Needs to be written ASAP.

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