How do I find the unix timestamp for the start of the next day in php?

Question

I have a unix timestamp for the current time. I want to get the unix timestamp for the start of the next day.

$current_timestamp = time();
$allowable_start_d         


        

Answer 1

Something simple like:

$nextday = $current_timestamp + 86400 - ($current_timestamp % 86400);

is what I'd use.