# IO::Pipe - phpMan

## NAME
    [IO::Pipe] - supply object methods for pipes

## SYNOPSIS
            use [IO::Pipe];

            $pipe = [IO::Pipe]->new();

            if($pid = fork()) { # Parent
                $pipe->reader();

                while(<$pipe>) {
                    ...
                }

            }
            elsif(defined $pid) { # Child
                $pipe->writer();

                print $pipe ...
            }

            or

            $pipe = [IO::Pipe]->new();

            $pipe->reader(qw(ls -l));

            while(<$pipe>) {
                ...
            }

## DESCRIPTION
    "[IO::Pipe]" provides an interface to creating pipes between processes.

## CONSTRUCTOR
    new ( [READER, WRITER] )
        Creates an "[IO::Pipe]", which is a reference to a newly created
        symbol (see the "Symbol" package). "[IO::Pipe::new]" optionally takes
        two arguments, which should be objects blessed into "[IO::Handle]", or
        a subclass thereof. These two objects will be used for the system
        call to "pipe". If no arguments are given then method "handles" is
        called on the new "[IO::Pipe]" object.

        These two handles are held in the array part of the GLOB until
        either "reader" or "writer" is called.

## METHODS
    reader ([ARGS])
        The object is re-blessed into a sub-class of "[IO::Handle]", and
        becomes a handle at the reading end of the pipe. If "ARGS" are given
        then "fork" is called and "ARGS" are passed to exec.

    writer ([ARGS])
        The object is re-blessed into a sub-class of "[IO::Handle]", and
        becomes a handle at the writing end of the pipe. If "ARGS" are given
        then "fork" is called and "ARGS" are passed to exec.

    handles ()
        This method is called during construction by "[IO::Pipe::new]" on the
        newly created "[IO::Pipe]" object. It returns an array of two objects
        blessed into "[IO::Pipe::End]", or a subclass thereof.

## SEE ALSO
    [IO::Handle]

## AUTHOR
    Graham Barr. Currently maintained by the Perl Porters. Please report all
    bugs to <<perlbug@perl.org>>.

## COPYRIGHT
    Copyright (c) 1996-8 Graham Barr <<gbarr@pobox.com>>. All rights reserved.
    This program is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.