output buffering in CLI script.

hi there, I can't seem to manage to buffer output (of an included file) in a CLI script, the following does not work:

                    // buffer output so we can avoid the shebang line being output (and strip it from the output we log)
                    $oldIFvalue = ini_set('implicit_flush', false);
                    ob_start();

                    if (!@include $script) {
                        ob_end_clean();
                    } else {
                        $output = explode("\n", ob_get_clean());
                        if ($output[0] && preg_match('%^#!\/%', $output[0]))
                            unset($output[0]);
                    }

                    ini_set('implicit_flush', $oldIFvalue);

the reason I'm wanting to do this is, primarily, in order to stop the shebang line that *may* be present in the included script from being output to stdout.