[K12OSN] PHP help

[Doug Simpson]

Uhhh. . . I lied. . . when I ran it as a non-root user, it returned:

Error: Couldn't get the port at 378

This is likely why. . . what to do about this?

Doug Simpson
Technology Specialist
DeQueen Public Schools
DeQueen, AR 71832
simpsond at leopards.k12.ar.us
Tux for President!

On Mon, 23 Jan 2006, Toshio Kuratomi wrote:

> On Mon, 2006-01-23 at 14:00 -0600, Doug Simpson wrote:
> > Hello all you PHP programmers out there!
> > 
> > I have a program that I need to be able to run from inside a php script 
> > that produces a web page.
> > 
> > The program allows you to set the pins on the parallel port to high or low 
> > based on commandline.
> > 
> > Example:
> > 
> > lptout 34
> > 
> > will set datalines 2 and 6 high and leave the rest off.
> > 
> > I need to be able to accomplish this with php.
> > 
> > A web form asks for a number between 0 and 255 and passes it to the php 
> > with a variable name "$bits"
> > 
> > So, I should be able to use:
> > 
> > system("lptout $bits" , $retval);
> > 
> > and it should do the same as running from the commandline:
> > 
> > lptout (bits) where bits is the number
> > 
> > The commandline method works, but I can't do it in PHP. Anyone got any 
> > ideas?
> > 
> Does the lptout command actually get run by the php script?  Maybe the
> PATH to lptout isn't correct.  Does it need to be executed as a certain
> user in order to run?  Perhaps you have to use a setuid binary in this
> situation.
> 
> -Toshio
>