如何获得计算两个unix时间戳的正确结果

Question

I know this has been asked several times before but I can't seem to find the right answer. I want to calculate the difference between two unix timestamps and show this difference in days. I'm not concerned about minutes or seconds here.

$time =  172800 - time() + 1265010604;
echo floor($time/86400);

Where 1265010604 is the timestamp for today and 172800 is a 3 day offset. Thanks

Answer 1

$now = time();
$then = time() - 172800;
$difference = $now - $then;
echo "It was ".floor($difference / 86400)." days ago";