note 46273 added to function.system

Hi guys <?php echo system("crontab -l"); echo shell_exec("crontab -l"); echo exec("crontab -l"); ?> These three command is not executing these linux command. can any one Help me to rectify this. or How can i create a cron job on linux machine using php. Thankz in advance S.Srivignesh ---- Manual Page -- http://www.php.net/manual/en/function.system.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+46273 Delete -- http://master.php.net/manage/user-notes.php?action=delete+46273&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+46273&report=yes Search -- http://master.php.net/manage/user-notes.php