Very simple request, not even a hack :P

[Mijae]

I have this on my page:

PHP Code:

$sinceopening = floor((time() - strtotime('June 24, 2002')) / 86400); 


Which shows total days since my forums went offline, and I can use the variable in the header. What I want is something similar, but to count days until a specified date (XX days remaining until our second anniversary type of thing).

Is there any way to make it a small variable to use in the header as well?

Thanks.