如何计算GMT和UTC时间戳

Question

I have been using php/ mysql for long time and i have been using unix_timestamp to store date,time values. I have created timestamp class to handle this kind of request. Source code is available on github.

By default, this class uses $_SERVER['REQUEST_TIME'] which is GMT timestamp, I believe.

My requirement are to find out Local timestamp in accordance with GMT and show to user. In other word, I need to find the local time of any user and difference with GMT in number of seconds using PHP

How do I implement these requirements in my class. Please help

Answer 1

To get an UTC timestamp try:

date_default_timezone_set("UTC");
echo date("Y-m-d H:i:s", time());