获取PHP中网页的上次加载/刷新时间

Question

I'd like get the time when the actual webpage has been loaded or refreshed.

I've tried http request but there is no such information.

After page is loaded ajax function checks new messages every 60 seconds. I need to show only new ones (the ones that have been posted after the page load).

Thanks a lot in advance.

Answer 1

As @DaveRandom mentioned:

You just need to store the result of time() in $_SESSION - e.g. $_SESSION['lastPoll'] = time();. Then every time you poll the server for new messages "SELECT * FROM messages WHERE message_time > ".$_SESSION['lastPoll'], and update the stored value with the new time()