note 16845 added to function.popen

i got a problem with popen(). i use this code: $command = "/bin/ls"; $fp = popen($command, "r"); $response = fgets($fp, 4096); pclose($fp); why $response is always empty? i use actual versions of php, suse linux and apache. it all runs on a quietly standard configuration. is there any concern about security? execute rights? any help appreciated. tia -- http://www.php.net/manual/en/function.popen.php http://master.php.net/manage/user-notes.php?action=edit+16845 http://master.php.net/manage/user-notes.php?action=delete+16845 http://master.php.net/manage/user-notes.php?action=reject+16845