shell_exec problem

echoindia756

Hi there,

I'm just writing some PHP code which basically communicates with a C++ program which is compiled on my VPS server.

I am having trouble executing a command with the shell_exec function.

Basically, the code that I am writing is going to be used as one of my own functions.
So I have wrapped it using the

function NameofFunction ($Variables) {

code.
So, when I refer to this function from my other PHP page, it does not execute the shell_exec command.

But I noticed that removing the

function NameofFunction ($Variables) {

makes the shell_exec function work perfectly. I did the test "shell_exec(whoami);" and it returns "apache".

This is my code:

$cmd = $file_path.'program --id '.$userID.' --time 1;
shell_exec($cmd);

Any help is much appreciated. Thanks!

cahva

Well did you actually call the function? 🙂 If it works as it is, it will work inside the function also. You didnt give the code for your function so its hard to tell whats wrong. It must be that you havent returned the result or the variables that you are giving to the function are wrong.

So this example works with you?

function whoami() {
    return shell_exec('whoami');
}

echo whoami();

echoindia756

cahva;10889388 wrote:
Well did you actually call the function? 🙂 If it works as it is, it will work inside the function also. You didnt give the code for your function so its hard to tell whats wrong. It must be that you havent returned the result or the variables that you are giving to the function are wrong.

So this example works with you?
function whoami() {
    return shell_exec('whoami');
}

echo whoami();

Thanks for your reply! Ok, so I tried returning the values and unfortunately i'm still not getting any output.
Is there any other reason that shell_exec would not run inside the function?

cahva

Well give us the function so we can see whats wrong. So did my example work in your server or not? If it does, then theres an error in your function.

echoindia756

EDIT:

I think I got it working :-)