note 69930 deleted from function.exec by cmb

Note Submitter: sirnuke at gmail dot com ---- Note that on Linux/UNIX/etc, both the command and any parameters you send is visible to anyone with access to ps. For example, take some php code that calls an external program, and sends a sort of password as a parameter. <?php exec("/usr/bin/secureprogram password"); ?> The entire string (actually probably something like "secureprogram password") will be visible to any user that executes ps -A -F. If you are going to be doing a lot of external calling, or any of it needs to be somewhat secure, you are probably better off writing a php extension.