How to get current time for zero timezone in php?

Question

PHP

It is necessary to display the current time in each city, regardless of the time zone of the server and the user.
Example: I know that the time zone for Moscow is UTC+3. Wherever I am in the world, I must get the current time in Moscow. And it should not depend on the time zone set on the server.
I thought about this algorithm:

1. Get current time for UTC0 - for zero zone
   
2. Add or subtract hours for this city's time zone
   

So, I have a problem with the first paragraph. All functions return the time in the current time zone of either the server or the user. And I need a zero belt.

Answer 1

The date object takes a time zone as the second argument, I suggest just specifying it: php.net/manual/en/datetime.construct.php

new \DateTime('now', new \DateTimeZone('Europe/London'));

Answer 2

gmdate returns GMT time