"system" - Help...please...:)

[Anon]

Hi:

I'm writing php code for a linux system. I need to create a zip file. I couldn't find a program to do that so I switched to tar since winzip will decompress that format. I'm using the following command:

$command="tar -cf dloadt.tar decsetup.exe file1 file2";
system($command);

I wind up with a file named "dloadt.tar" except it's 0-length. Can anyone point me in the right direction?

[Anon]

Hi all:

I've got more information. When I run the program like this:

$junkit = exec("tar -cf dloadt.tar file1 file2");

the file "file1" is reduced to 0-length and the tar file is created. If I run that code with just one file as the target(file1, for instance), both the tar file and file1 are 0-length.