Rincewind — Tue, 01 Nov 2005 03:07:29 +0000

The return value (or more correctly the exit value) is returned by the command/script/program when it finnished. In general, and exit value of 0 means the command ran correctly. Any other number returned means there was an error in the execution of you command. If the thing your running was well writen, then the exit value will mean something. Though the exact meaning of each exit value depends on the command that was run (the person who programed the script that you are running can set what the exit codes are for various faults.)

There are certain exit codes that are supposed to have reseved meaning. This page lists the reserved codes and their meanings. http://www.faqs.org/docs/abs/HTML/exitcodes.html#EXITCODESRE

For the meanings of other exit codes returned by you script, you will need to google pages for that command to find the true meaning.

ktsirig — Sun, 30 Oct 2005 21:08:19 +0000

Hi, thanx for your time.
My problem really has to do with WHAT the return values mean.
My problem is that I call an external program through PHP, using :
system ('program', $return_value);

I wanted to know if there is any kind of documentation saying perhaps that 'if you have $return_value=1, then it means that you have ... problem'.
I hope I am clear to you. i want to figure out WHY the program hasn't been called from PHP, so as to fix the problem if I can (if it has to do with permissions or whatever)..

Busy — Sun, 30 Oct 2005 20:15:48 +0000

0 and 1 are usually true and false

can you give us more of an example as to what your trying to do