php problem

masand · 07-18-2004, 10:16 AM

hi there
i am new to php and i am facing some problems here

1.i want to shoow the output of my C program in the browser
for this i have tried
exec,system, passthru, functions

all of them are workuing for programs where i do not need to pass any arguments

in case of programs where i need to pass arguments it is not working,i have tried escapeshellargs(), and also ' ' (what they call it,i do not remember)

when iam using other commands eg. 'ls -la' they are working fine but my program is not working although it works like this in the shell

#force gaurav

where gaurav is the argument to be pased.

2. also the output of my program consists of displaying a list of users. in the C program it is displayed with a break by using '/n' but when i use the C program through php the o/p is displayed in a continous line.

please help

regards
gaurav

Chris Parker · 07-29-2004, 05:35 PM

Code:

<?php
$arg = "-l";

exec ("ls  $arg", $a);
for ($i = 0; $i < count ($a); $i++) {
        echo $a[$i]."\n";
}
?>

This works for me. I am assuming that you are passing an argument to your program and your program writes to the stdout.

Post the c program code if you are still having problems.

Hko · 07-30-2004, 04:50 AM

Quote:

1.i want to shoow the output of my C program in the browser
for this i have tried
exec,system, passthru, functions

The easiest is to use popen().
See: http://www.php.net/manual/en/function.popen.php

masand · 07-30-2004, 06:36 AM

hi there
thanks for ur reply
i found out what was going wrong..
actualling my program requires root permissions but apache executes them with username 'apache'
so could not complete it
so i gave
'chmod u+s force'

this now allows apache to execute the program

hey one more thing
how do refresh screen in php
there is one program

ncurses_refresh(int ch)

ony this much is given in the php.net manual

any other functions are there???

pl. help

Cedrik · 07-30-2004, 06:46 AM

I would think you need "refresh" your page because it was cached by your web browser client so take a look in documentation for header() :

http://fr3.php.net/header

And scroll down until you find the 5 examples of use the header() function to disable cache

masand · 07-31-2004, 09:22 AM

i just want to reload the page again

Cedrik · 07-31-2004, 09:32 AM

You could use the header() function in php or document.location.replace() in javascript to refresh your page, but both function can refresh your page in an infinite loop if you take a bad approach to do things.