[PHP] system, exec, shell_exec, passthru

[p . willis]

Hello,

I am trying the run an external application with
command line arguments using PHP under linux.

ie:

$command="myprog $arg1 $arg2 > textfile.txt";
system("echo \"$command\" > test.txt");
system($command);

$handle=fopen("textfile.txt","r");
if($handle!=NULL)
{
        while(!feof($handle))
        {
                ...
        }
        fclose($handle);
}


I test my input arguments for the 'system' call by dumping
the command into a text file. I can then test the command in 
the console. The commands work fine when run from the console.

The commands don't work when run through the system command.
I have tried system, exec, passthru, and shell_exec to no avail.

Am I missing some permissions thing in my php.ini file?

Thanks for any insight,

Peter

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