PHP Time: get next minute/hour what's divisible by five

Question

I need a code what detect the current time and give me the following time what is divisible by five.

For example: It's: 06 03, 2017 21:22:23 , give me 06 03, 2017 21:25:00 in php. I have no any idea to starting. Is there any code or solution to do this?

Answer 1

$now = time();
// Add five minutes in seconds, round it down to the nearest five:
$next = ceil($now/300)*300; 
echo date('H:i', $next);