datetime - Change today's date and time in php

Question

Is it possible to change php's current date and time (something like set_time(strtotime('1999-09-09')) so when i call time() it will return me timestamp for 1999-09-09? I need to set it globally for whole app.

EDIT

I already have one old app and i need to make possible to set up current date. I can't accept any custom functions. Imagine i should review all the code and replace every time() call. Even if i'll do so then it will not help because there are functions like getdate() which i need to replace as well.

Answer 1

You could also check the Timecop PHP module, worked perfectly in my case.

After installing it, you can travel back & forth in time with just one line of code.