how send messages between two proceses?

[_mario.lat]

hallo,
I'd like to fork a process so I have 2 process: process A and process B.
How can send A a message (array of values or a value) to B?
how can B read the message?
Thank you in advance for the time you'll spend for me.
Mario.

[Andy Hassall]

Re: how send messages between two proceses?

On Sat, 27 Jan 2007 09:50:01 +0100, "_mario.lat " <_mario.lat@lib ero.itwrote:

>I'd like to fork a process so I have 2 process: process A and process B.
>How can send A a message (array of values or a value) to B?
>how can B read the message?

If you are actually forking (as opposed to exec'ing a new process), then
forked processes share filehandles with their parent, so that's one way to
communicate between them. Other methods may include:

Simple command line parameters? http://php.net/system
Pass data via stdin/stdout? http://php.net/proc_open
Sockets? (UNIX, TCP, etc.) http://php.net/sockets

Or see http://en.wikipedia.org/wiki/Inter-p..._communication for more.

--
Andy Hassall :: andy@andyh.co.u k :: http://www.andyh.co.uk
http://www.andyhsoftware.co.uk/space :: disk and FTP usage analysis tool

[Toby Inkster]

Re: how send messages between two proceses?

_mario.lat wrote:

I'd like to fork a process so I have 2 process: process A and process B.
How can send A a message (array of values or a value) to B?

Unix sockets, TCP, UDP, shared memory.

how can B read the message?

By listening on a socket (Unix sockets, TCP, UDP) or by continuous polling
(shared memory).

--
Toby A Inkster BSc (Hons) ARCS
Contact Me ~ http://tobyinkster.co.uk/contact