note 60090 added to function.setcookie

Autaully, you will face the time zone problem if someone who is not in the same time zone with your sever aceept your page. To solve the problem, you should save the time in cookie, eg $counter=time(); setcookie("apast","$counter",time()+3600*2400000); then you use the time difference method. $now=time(); $timediffer=$now-$_COOKIE['apast']; if ($timediffer<3600*24) { echo 'you cant query db more than 1 time in 1 hrs, this is to prevent some guy trying to damage the system, thank you for understanding.sorry for inconvenient!</font></p>'; require 'bottom.php'; exit; }; This is my way to solve the time zone problem. Hope that this will be useful! ---- Manual Page -- http://www.php.net/manual/en/function.setcookie.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+60090 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+60090&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+60090&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+60090&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+60090&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+60090&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+60090&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+60090&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+60090&report=yes Search -- http://master.php.net/manage/user-notes.php